the process involving microspore division and a tough wall to protect the gametophyte leads to the production of what end product?

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Answer 1

Stamens involving microspore division and a tough wall to protect the gametophyte .

In general , the sporophyte helps to produces spores, that can develop into gametophytes. These gametophyte also produces ovules and pollen, which ultimately unite to form a zygote.

Stamens are  the structure of male reproductive part of a flower. Their development to form a male reproductive system is very complex biological process, that also incorporate to the formation of the stamen with the help of differentiated anther tissues this tissue have microspores/pollens inside them, after that anther develops, and subsequently pollens and then pollination happens .

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Related Questions

What is the inner surface of the small intestine?

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The inner surface of the small intestine is known as the mucosa which is basically the innermost layer of the GI or the gastrointestinal tract.

Small intestine is a very crucial organ of the human digestive system as it is involved in the digestion as well as absorption of food. The mucosa is basically the innermost layer of the GI or the gastrointestinal tract or the inner surface of the small intestine. It happens to surround the cavity which is known as the lumen of the tract and is into direct contact with the digested food which is known as chyme.

This lining of the small intestinal, mucosa is actually very highly specialized for maximizing the amount of digestion and absorption of nutrients that takes place. The lining is very much folded in order to form microscopic finger-like projections which are known as villi which perform the function of increasing the surface area to help with absorption.

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the simplest and most rapid method of producing atp during exercise is through?

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The simplest and most rapid method of producing ATP during exercise is through the ATP-CP network.

The ATP-CP system results in explosive motions that are extremely quick (1-2 repetitions). This energy system only lasts between 6 and 10 seconds. The ATP-CP system would be your nitrous boost, to use an automotive analogy.

As its name suggests, the ATP-PC system is composed of phosphocreatine and adenosine triphosphate (ATP). This energy system breaks down the stored high-energy phosphates to generate instantaneous energy.

The ATP-PC system generates a rapid, intense, and brief burst of energy that lasts about ten seconds when used in sports like powerlifting, and throwing competitions like the javelin, shot put, or discus throw. Other sports like 100-meter sprints and powerlifting are examples.

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which theory proposes that characteristics acquired during the lifetime of an individual can be passed on to that individual's offspring?

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heredity can be passed on through heredity is the theory of evolution use-disuse from Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.

Jean Baptise de Lamarck (1744-1829) was a French language biologist. His famous book is "Philoshopic". Lamarck is one of the experts whose opinions form the basis of the theory of evolution. Biologists define an acquired characteristic as one that has developed in the course of the life of an individual in the somatic or body cells, usually as a direct response to some external change in the environment or through the use or disuse of a part. The inheritance of such a characteristic means its reappearance in one or more individuals in the next or in succeeding generations. An example would be found in the supposed inheritance of a change brought about by the use and disuse of a special organ.

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The theory that proposes that characteristics acquired during the lifetime of an individual can be passed on to that individual's offspring is Use-Disuse.

The Use-Disuse theory also known as Lamarckism; proposes that an organism can pass on traits it acquired during its lifetime to its offspring. As example; if a giraffe stretches its neck to reach leaves on a tree and this stretching causes the giraffe's neck to become longer, the giraffe's offspring will inherit the longer neck.  

This theory has been largely discredited by modern genetics and the understanding of the role of DNA in inheritance as well as by studies that show acquired traits are not inherited.

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based on what you know about the organelles involved in protein and steroid synthesis [p. 65], what would be the major differences between the organelle composition of a steroid-producing cell and that of a protein-producing cell?

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Steroid hormone biosynthesis takes place primarily in mitochondria. RER and secretory vesicles are abundant in the steroid-producing cell, which also has a large smooth ER.

The smooth endoplasmic reticulum, abundant in steroid-secreting cells and whose membranes are home to a large number of sterol and steroid synthesis-related enzymes, is a distinguishing feature.

However, they have a relatively small amount of morphologically recognizable rough endoplasmic reticulum, which is probably necessary for the synthesis and upkeep of smooth membranes.

This study shows that previously believed to be restricted to the rough endoplasmic reticulum, translocation apparatus and oligosaccharyltransferase complex proteins are abundant in adrenal smooth microsomal subfractions enriched in soft endoplasmic reticulum membranes. We also show that these smooth microsomal subfractions have the ability to cotranslate, cleave signal peptides, and N-glycosylate newly synthesized polypeptides.

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What muscles attach to the greater tubercle of humerus?

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Teres minor and Infraspinatus are the muscle attached to the humerus

What is the role of Teres minor and Infraspinatus?

As a component of the rotator cuff, the infraspinatus and teres minor attach to the head of the humerus and aid in keeping it in the glenoid cavity of the scapula. They cooperate with the posterior deltoid to adduct and outwardly (laterally) rotate the humerus.

What are the most common injuries to infraspinatus and teres minor?

The Infraspinatus is the second most likely of the rotator cuff muscles to get injured after the supraspinatus. A tear of the infraspinatus could be the result of either an acute or chronic movement.

Baseball pitchers classically tear the infraspinatus muscle. It’s not the acceleration of throwing the ball as much as it is the eccentric control of this muscle while they are throwing the ball that causes it to tear.

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the holdfast of brown algae functions in __________.

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A unique structure that serves as an anchor is the holdfast of brown algae.

It secures the algae to a solid surface in its environment, such as rocks or other seaweed, preventing it from being swept away by water currents.

The holdfast also provides stability, allowing the algae to grow tall and reach up towards the light, which it needs for photosynthesis. This structure plays a crucial role in the survival and success of brown algae in their marine habitats.

In addition to anchoring and stability, the holdfast of brown algae also plays a role in nutrient uptake. It contains root-like structures that absorb nutrients and water from the surrounding environment, providing the algae with the resources it needs to grow and survive.

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If there werent alleles for different traits, but rather only one version of a gene for different traits, how would humans be different? justify your answer

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If there weren't alleles for different traits, but rather only one version of a gene for different traits humans would look exactly alike.

What is an allele?

An allele is a gene variation that exhibits a certain trait (Phenotype).

Humans have a gene for eye colour, but if they have various alleles for, say, brown or black eyes, their phenotypes will change because of the varied alleles.

However, the eye color and every other phenotypic would be the same if the eye color alleles were all the same.

Therefore, there would be no differences in eye color, height, skin tone, etc. As a result, all humans would share the same genetic makeup and appearance.

Thus, humans would be exactly same if there weren't alleles for different traits.

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__________ glands are flask-shaped, with short ducts that usually open into a hair follicle and directly onto to skin.

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Sebaceous glands are glands found in the skin of mammals, including humans.

They are flask-shaped and typically have short ducts that open into hair follicles or directly onto the skin. These glands produce an oily substance called sebum, which helps to lubricate and protect the skin and hair. Overproduction of sebum can lead to conditions such as acne, while underproduction can cause dry skin. The activity of the sebaceous glands is regulated by hormones, particularly androgens, which increase their activity during puberty. The glands also play a role in the development of skin conditions such as seborrheic dermatitis and rosacea. Sebaceous glands are skin glands that produce sebum, an oily substance that lubricates and protects skin and hair. Overproduction can cause acne, while underproduction can lead to dry skin. They are regulated by hormones, particularly androgens, and play a role in skin conditions such as seborrheic dermatitis and rosacea.

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select all examples of cells that are prokaryotic.

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All examples of cells that are prokaryotic are the archaeal cell and the bacterial cell.

As a result of electron microscope investigations demonstrating a shared basic cell shape among bacteria, the word "prokaryote" was first used. A bacterial cell is a gel-like matrix made up of water, enzymes, nutrients, waste products, and gases. Cell components including ribosomes, a chromosome, and plasmids are found within this matrix.

Because it lacks peptidoglycan and because its membranes are made of ether lipids rather than ester lipids, archaeal cell envelope fundamentally differs from that of bacteria. A surface-layer (S-layer), a proteinaceous two-dimensional crystal layer, covers the majority of archaea.

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Select all examples of cells that are prokaryotic.

Fungal cell, animal cell, archaeal cell, bacterial cell, plant cell.

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what was the impact of human-driven changes to the environment on the frequency of sickle cell trait?

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Human-driven changes to the environment can have a significant impact on the frequency of sickle cell trait, but the exact nature of that impact depends on the specific changes and their effects on the populations.

Sickle cell trait is a genetic condition that provides some protection against malaria, a mosquito-borne disease. In regions where malaria is prevalent, the frequency of sickle cell trait is often higher because carriers of the trait have an advantage in surviving and reproducing.

However, human-driven changes to the environment, such as the use of insecticides, the construction of dams, and urbanization, can alter the distribution and prevalence of mosquitoes and, as a result, reduce the frequency of malaria. This, in turn, reduces the selective pressure favoring the sickle cell trait and can cause the frequency of sickle cell trait to decrease over time.

On the other hand, human activities can also lead to environmental changes that increase the transmission of malaria, such as deforestation and the creation of new habitats for mosquitoes. In such cases, the frequency of sickle cell trait may increase.

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what is a function of the highlighted structures? the highlighted structures are thin perpendicular plates in the parallel red stripes of tissue.what is a function of the highlighted structures? synthesizes proteins nourishes the cells replicates new muscle cells allows action potentials to quickly travel from one cell to another

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A function of the highlighted structures is that it D: "allows action potentials to quickly travel from one cell to another".

The highlighted structures are called the T-tubules and their function is to allow the rapid spread of electrical signals, known as action potentials, from one muscle cell to another during muscle contraction. T-tubules are invaginations of the plasma membrane that run perpendicular to the surface of the muscle fiber, providing a direct connection between the interior of the cell and the surface. This allows the electrical signal, initiated at the surface of the cell, to quickly reach the interior, where it triggers the release of calcium ions from the sarcoplasmic reticulum.

The calcium ions then bind to the contractile proteins, causing the muscle fibers to contract. The rapid spread of the electrical signal through the T-tubules is crucial for the coordinated contraction of multiple muscle fibers during voluntary movement.

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White-tailed deer are seasonal breeders. Female white-tailed deer begin their reproductive cycle in the fall. Rising testosterone levels in male white-tailed deer cause them to start their breeding season around the same time. Offspring are born the following spring and summer. What is the most likely explanation for white-tailed deer having a seasonal breeding cycle instead of a monthly breeding cycle like many domesticated animals?
A. Male and female deer come into contact with each other only in the fall
B. Large predators are not found in deer habitats during the spring and summer months
C. Giving birth only in the spring and summer ensures that offspring are born when food is most available
D. Deer give birth in the spring and summer in order to avoid being pregnant during the hot summer months.

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Deer having seasonal breeding cycle instead of monthly breeding cycle because D. Deer give birth in the spring and summer in order to avoid being pregnant during the hot summer months.

In general , Seasonal breeders are considered as the animal species that  auspiciously mate only during specifies times of the year. In these times in the year grant for the boosting for the survival of young ones as the factors that is circulating temperature, food and water availability, and changes in the predacity behaviors of these species.

Seasonal breeders only breeds in condition when the chances of survival of young ones are optimum due to the presence of radiating temperature, food and water. examples includes Frogs, Lizards, Birds and deer.

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What happens to the chromosomes during anaphase of meiosis?

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Each chromosome splits in half in anaphase, a practice called as disjunction, as the cell lengthens. The spinning fibers and microtubules in duty of tugging the sister chromatids aid in this process.

What are chromosomal and what do they do?

The thread-like chromosomes that carry the genetic data between cell to cell are formed of proteins and a single DNA molecule. Chromosomes are found inside the nucleus of organisms in both plants and animals, including humans.

What are DNA vs. chromosomes?

Each cell's cell nucleus chromosomes, which are structures that mimic threads and carry the DNA molecule. Each chromosome is formed from DNA that has been tightly wound around histone proteins several times to sustain its shape.

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The main product of photosynthesis used by plants for food is?

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Below please find the answer to your question. Thank you!

The main product of photosynthesis used by plants for food is glucose (C6H12O6).

What is it called when both genes contributed by the parents call for the same allele?

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When both genes contributed by the parents call for the same allele then it is called as to be homozygous.

Each gene has two alleles, or variations, in each one of us. When two identical copies of a gene are present, you are said to be homozygous for that gene. It contrasts with a heterozygous genotype, in which the alleles are distinct.

When two alleles are identical at a specific location, a genotype is said to be homozygous, and when the two alleles are different, it is said to be heterozygous. The phenotype, or the organism's outer appearance, is influenced by alleles.

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this structure has a sticky surface to trap pollen grains

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The sticky area on top of the pistil known as the stigma captures and keeps the pollen. The style is the tube-like framework that holds the stigma in place.

What is the material that sticks to the stigma?

The top, enlarged portion of the pistil in a flower's female reproductive component is called the stigma. The stigma of the flower receives pollen grains that have been discharged from the stamen's anther. Because stigma is sticky, pollen grains might adhere to it.

Where does pollination take place on the sticky tip of the pistil?

It is the flower's female reproductive system. The sticky tip of a carpel or pistil, known as the stigma, is where pollen is captured. 

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Look at the food web below. In the diagram, the producers are at the bottom of the food web that the consumers feed off of. Predict what would happen to the ocean food web if a natural or man-made disaster impacted the producers (phytoplankton).

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When a sudden change occurs in one of the populations in a food web, it affects the whole equilibrium. According to the cascade effect, if a natural or man-made disaster impacted the producers, the whole food web will be negatively affected. All species will decrease in their population size.

What is a food web?

Food webs are complex nets composed of several organisms through which energy can flow. Food webs are arranged in levels, and the organisms placed at lower levels pass energy to the ones at the higher levels.

Organisms at each level feed on the preceding one and become food for the next one.

The first link corresponds to a producer organism -autotroph-.The following links are the consumers -heterotrophs-: herbivores and carnivores.The last links are the decomposers that degrade organic matter from dead organisms.

Because it is a net (web), all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.

Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.

In the provided image, we can see the only producer is phytoplankton, which means that directly or indirectly, all the following individuals depend on this species.

If any disaster impacted phytoplankton, it would decrease its population size. The fewer phytoplankton, the less food there will be for zooplankton and flying fishes. Consequently, these species would decrease their population size because their food source was affected.The decrease in zooplankton would also affect striped fish. If there are fewer flying fish and stripped fish available, it will have negative consequences on the tuna that feed on them, and eventually, tuna's population size will decrease as well. Finally, the last affected individuals would be sharks and seals, since they feed on tuna. The decrease in available tuna means a decrease in shark and seal populations.

According to the cascade effect, if a natural or man-made disaster impacted the producers, the whole food web will be negatively affected. All species will decrease in their population size.

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which nurisng conclusion about a 6-month primigravida is appropriate when blood tests report a hemoglobin of 11

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Physiologic anemia is the nursing conclusion about a 6-month primigravida is appropriate when blood tests report a hemoglobin of 11g/dl.

Hemoglobin count is in range according to the second trimester but lower than the expected count that is 12-16g/dl as per normal pregnancy norms.

Generally the estimated count of hemoglobin in case of a pregnant woman comes out to be 12-16 g/dl in the first and third trimester however the count ranges around 11 to 10.5g/dl in the second trimester.

By hemoglobin count of 11 for 6 months pregnant women, the nursing conclusion that can be drawn is it is normal as per the range but is subjected to further decrease in the third trimester and could be a reason for anemia as well.

So mothers should supplement her diet with more iron content to balance it in the upcoming trimester. As lower hemoglobin content results in low body weight of the baby and poor bone structure.

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(Complete question) is:

Which nursing conclusion about a 6-month primigravida is appropriate when blood tests report a hemoglobin of 11 g/dL, red blood cell count of 5.5 million/mm3, hematocrit of 33%, and white blood cell count of 12,000/mm3?

if the production possibilities frontier is linear, thenA. Fixed amount of resources B. Production is efficient.

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A linear production possibilities frontier indicates that there is a fixed amount of resources.

The maximum combinations of two items that can be produced with a specific set of resources and technology are graphically represented by the production possibilities frontier (PPF) in economics. A linear PPF depicts a scenario in which the opportunity cost of providing one good is constant and resources are fixed in amount and cannot be expanded.

In other words, if the PPF is linear, then there are finite resources available, and generating one good results in a loss of the chance to produce another good. Production of the other good will fall proportionately as more units of the first good are produced.

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what happens if there are too many links in a food chain

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Answer:

animals at the end of the food chain wouldn't get any food or energy to survive

this structure has a sticky surface to trap pollen grains

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The top part of the pistil called the stigma is the sticky part that attracts the pollen grains.  

Pistil is a reproductive organ in the flowers bearing the female gametes. It is divided into three sections: stigma, style and ovary. The stigma is to attract the pollen grains. Style connects the ovary to the stigma. Ovary is the main part that consists of the gametes.

Pollen grains are the microscopic male structures that contain the male gamete. The pollen grain is divided into two portions: a vegetative cell and a reproductive cell. The vegetative cell is present to nourish the reproductive cell inside.

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The findings of the human genome project revealed that?

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The project demonstrated that human genomes are 99.9% identical, which paved the way for compiling a list of human genes as well as starting to comprehend the intricate choreography associated with gene expression.

This same Human Genome Project was indeed a significant international scientific undertaking with the primary objective of producing the first gene sequences. Over 90% of the human genome was covered by the genome sequence this same Human Genome Project generated in 2003. The Human Genome Project's completion showed that the genetic code has fewer genes than anticipated is not much more than simpler microbes. The Human Genome Project's objective was to give scientists strong tools to comprehend the genetic components of human disease, opening the door to new approaches for their diagnosis.

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dendrites are multiple choice the part of the neuron that is responsible for sending information away from the cell body toward other cells. treelike fibers which receive information and orient it toward the neuron's cell body. the layer of fat cells that encase and insulate the neuron. located inside the cell body.

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Dendrites are treelike fibers that are located on the neuron's cell body and are responsible for receiving information from other neurons.

They are multiple branching extensions of the neuron that are covered in tiny spikes called spines, which are the sites of synapses with other neurons.The main function of dendrites is to receive signals from other neurons and transmit them to the cell body, where they are processed and sent to the axon, the part of the neuron responsible for transmitting information away from the cell body.

The dendrites act like antennae, receiving signals from other neurons and orienting them toward the cell body.The dendrites are not the layer of fat cells that encase and insulate the neuron. That function is performed by the myelin sheath, which is made up of glial cells that wrap around the axon to insulate it and speed up the transmission of electrical signals.

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Which one of the following statements about RNA processing is true?
O RNA splicing can be catalyzed by tRNA
O Introns are cut out before mRNA leaves from the nucleus
O RNA polymerase removes exons from the pre-mRNA
O A pre-mRNA is often much shorter than the final mRNA molecule that leaves from the nucleus

Answers

The answer to the question is that ribozymes could've been involved in RNA splicing.

What role does nucleotide sequence play?

In a molecule of nucleic acids ribozymes, which are RNA molecules, can both break and create crosslinks. These compounds can bind and digest an mRNA substrate with even larger possible benefits than antisense part a and b.

What is ribozyme, exactly?

Definition. Catalytically RNA molecules or RNA-protein complex are known as ribozymes, in which just the RNA is essential for catalysis. In the same sentence, the terms "enzyme - mediated activity" and "ribonucleic acid nature" are used to characterize a ribozyme. All creatures from all the domains of life have ribozymes in their genomes.

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five-year-old ling is beginning to show signs of being able to plan ahead in a somewhat rational manner. at her age, this development is likely due to: please choose the correct answer from the following choices, and then select the submit answer button. an increase in her association areas. neural networks sprouting in her frontal lobes. a decrease in production of neurons. maturation of her cortex.

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frontal. Terms in this collection (30) Ling is a 5-year-old who is starting to demonstrate evidence of being able to plan ahead reasonably logically.

She shouldn't be concerned at her age because: Baby uneasiness caused by meeting or being left in the care of strangers is known as stranger anxiety. Stranger anxiety is a totally normal developmental stage that often starts between the ages of 6 and 8 months. The process of learning a language slows. Learning new languages accelerates significantly. Around 10 new terms are added to the vocabulary each month. Thinking like a child is the best approach to comprehend a child's logic.

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Five-year-old Lilah is beginning to show signs of being able to plan ahead in a somewhat rational manner. At her age, this development is likely due to neural networks sprouting in her _____ lobe.

HELP ASAP, WILL GIVE BRAINLEIST, 100 POINTS,

Using reliable internet sources, identify three ways we use analog and digital signals in our everyday lives.

Answers

Answer:

Explanation:

Feb 8, 2018 · Digital signals, on either hand, are increasingly prominent among chip manufacturers. Digital signals are employed in a variety of applications and have become a way of life for the present generation. Mobile phones, laptops, digital televisions, and cameras, to name a few examples. Digital signals include things like memory and data storage. Signals should be stored in digital format since analog storage is challenging.

Television broadcasting - television signals are transmitted using both analog and digital signals, with many countries transitioning from analog to digital broadcasting.

Landline telephones - early telephone networks used analog signals to transmit voice data, while modern digital technologies have mostly replaced analog signals in landline telephones.

Audio and video recording - analog technologies such as vinyl records and cassette tapes are still in use, while digital technologies such as CDs, MP3s, and streaming video are becoming increasingly popular.

____. Non-scientific synonym for disease-producing organisms.

Answers

Germs is the non-scientific synonym which is used for the organisms that cause disease.

Germs are basically microorganisms and therefore they can be seen only through a microscope and through bare eyes. Germs can be found everywhere, that is, in the air, soil, and even water. Germs are also present on our skin as well as in our body. Many of the germs even live inside and also on our bodies without causing any harm to us.

Germs is basically a non-scientific term which we use to refer to organisms which cause diseases. We also call them as pathogens. When such organisms enter our body to cause diseases or infections, out immune system tries to fight and eliminate it.

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_____a species that makes gametes of two different sizes exhibits

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A species that produces gametes of two distinct sizes demonstrates anisogamy.

Which definition best fits a gamete?

The immature reproductive organ sex cell known as a gamete is capable of combining with another diploid reproductive cell to create a diploid zygote and has a haploid chromosome number (i.e., 50% of a genetic material or just one pair of different chromosomes).

Why do gametes form?

Meiosis (reduced division), where a germ cell splits into two pieces and produces four gametes, is the process by which gametes are created. Male and female gametes combine during fertilization to create a diploid (i.e., having paired chromosomes) zygote.

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examine the figure of insulin signaling. why does one receptor have so many different signal transduction proteins/pathways?

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The intricate mechanism of insulin signaling depends on one receptor having so many diverse signal transduction proteins and pathways.

The detection of insulin by the receptor and the subsequent transmission of the signal to the downstream pathways are both carried out by several signal transduction proteins. As a result, the insulin signal can be reacted to with greater flexibility and specificity, ensuring that the appropriate cells are targeted and the appropriate response is set off. The hormone insulin attaches to its receptor in the cell membrane, starting the crucial biological process known as insulin signaling. The uptake of glucose from the bloodstream into the cell for the purpose of generating energy is brought about by a series of metabolic events that are set off by insulin inside the cell.

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the soil severs as a
a. carbon sink
b. carbon source
c. both
d. neither

Answers

Answer:

The soil functions as a medium to support the plants that we use to produce food, fiber, and bio-energy materials. It serves as a physical support and protective environment for plant roots. It provides a reservoir of available water and nutrients for plant growth.

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