Most prokaryotic cell reside in the oceanic and terrestrial sub surfaces. These prokaryotic organisms are single celled organism that does not have a nucleus like bacteria.
These organisms fed on the carbon compounds that is accumulating in earths early oceans. These organisms does not contains genetic material in nucleus. The DNA exists in the region of cell that is called as nucleoid.
These organisms have a rapid reproductive rate and also have a ability to survive harsh conditions.
Nucleoid is an irregular shaped region that is present in the prokaryotic cell and these contain genetic material.
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There are 8 pairs of cervical spinal nerves, but only 7 cervical vertebrae, because the first cervical pair emerges between the ______ and the ______.
The first cervical pair emerges between the base of the skull and the neck (thoracic vertebrae).
The cervical spine is the neck region of the spine and is made up of eight cervical spinal neurons and seven stacked bones called vertebrae. Your cervical spine's first two vertebrae are distinct in both form and function. The atlas, which is the first vertebra (C1), is a ring-shaped bone that starts at the base of your skull. Your head is held upright by the atlas. The atlas can pivot against the second vertebra (C2), which is referred to as the axis, allowing for the side-to-side "no" rotation of your head. Facet joints, which connect the seven cervical vertebrae (C1 to C7) at the rear of the bone, allow your neck to move forward, backward, and in a twisted position. According to their order from superior (C1, or the first cervical vertebra), to inferior, each cervical vertebra is given a name (C7 or seventh cervical vertebra). Except for spinal nerve C8, which appears below vertebra C7 and above vertebra C6, the cervical nerves are numbered by the vertebra below and run from the base of the skull to the thoracic vertebrae in the neck.
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What produces four daughter cells?
a) meiosis
b) mitosis
c) both of these
d) neither of these
The correct option is (a) Meiosis
Meiosis produces four daughter cells.
What is Meiosis?Meiosis, often known as "lessening" since it involves a reductional division, is a unique process used by sexually reproducing organisms to produce gametes, such as sperm or egg cells. It comprises two rounds of division, producing four cells with only one copy of each chromosome as a final product (haploid). Additionally, each chromosome undergoes genetic material cross-pollination between the paternal and maternal copies before division, resulting in novel combinations of the genetic code on each chromosome. Later, when a male and a female go through meiosis, the haploid cells they generate unite to form the zygote, another cell with two copies of each chromosome.Learn more about the Meiosis with the help of the given link:
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Which dna genome, upon entry to the cell, can be immediately copied into mrna? linear ssdna
dsDNA, upon entry to the cell, can be immediately copied into mRNA.
dsDNA- Two polynucleotide chains with nitrogenous bases joined by hydrogen bonds make up double-stranded DNA. Due to the anti orientation of the sugar-phosphate backbones and the complimentary nature of the A-T and C-G base pairing, one strand in this arrangement mimics the other.
Cell- The science of structure and function of cells is known as cell biology, and it is based on the idea that a cell is the basic building block of all life. A thorough understanding of the organisms and tissues that cells make up is made possible by concentrating on the cell.
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Identify the number of cells that make up organisms.
a) at least 1000 one
b) one or more at least 100
The number of cells that make up organisms are one or more.
What is organism?
Any organic, living system that performs as a distinct individual unit is referred to as an organism in biology. All living things are made up of cells (cell theory). Taxonomy separates species into protists, bacteria, and archaea, which are unicellular microorganisms, or multicellular animals, plants, and fungi. All kinds of creatures are able to reproduce, grow and develop, maintain themselves, and respond to stimuli to some extent. A few examples of multicellular animals that distinguish specialized tissues and organs throughout development are beetles, squids, tetrapods, mushrooms, and vascular plants.
One cell is the bare minimum that living things can possess i.e the minimum number of cells required to form an organism is one.
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PLEASE HELP!!
Your lunch consists of an orange, wheat crackers and a glass of milk. Which part of your
lunch will give you quick energy and which part will give you enough energy to get through
the rest of the day? EXPLAIN YOUR ANSWER
Answer:
oranges
Explanation:
Oranges are rich in vitamin C, folate, and potassium. When eaten, oranges, like apples, will provide you with sustained energy as opposed to a quick jolt. Additionally, fruits contain simple carbohydrates that your body easily breaks down into glucose to give you a quick boost of energy.
Alcoholic fermentation:__________
a. is carried out by yeasts.
b. produces far less atp than aerobic respiration.
c. all answers are correct.
d. produces ethanol.
e. produces carbon dioxide.
Option(c)All the answers are correct is the right answer.
We can observe that alcoholic fermentation is carried out by yeasts and they produce ethanol and carbon dioxide. Then we can observe that they also also produce far less ATP than aerobic respiration during alcoholic fermentation and this makes all the given answers are correct.
What is the fermentation of alcohol process?Alcoholic fermentation is a sophisticated biochemical procedure in which yeasts transform carbohydrates into ethanol, carbon dioxide, and other metabolic byproducts that affect the meals' chemical make-up and sensory qualities.What does alcoholic fermentation look like in practice?The process of utilizing yeasts to turn sugars into alcohol is known as alcoholic fermentation. Higher-ABV beverages can be made from already-fermented base items through the distillation process. (For instance, distilling beer wort yields whiskey, whereas distilling wine yields brandy.)Which enzyme causes the fermentation of alcohol?An enzyme complex called zymase is responsible for catalyzing the conversion of sugar into ethanol and carbon dioxide. Yeasts naturally contain it.To learn more about alcoholic fermentation visit:
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Which type of malware relies on lolbins?
a. pup
b. bot
c. file-based virus
d. fileless virus
Correct option d) fileless virus
Fileless viruses take gain of local offerings and methods which might be a part of the working machine (OS) to keep away from detection and perform its attacks, and those local offerings utilized in a fileless virus are referred to as living-off-the-land binaries.
LOLBins is the abbreviated time period for Living Off the Land Binaries. Living Off the Land Binaries are binaries of a non-malicious nature, neighborhood to the working machine, which have been utilized and exploited with the aid of using cyber criminals and crime agencies to camouflage their malicious pastime.
Fileless malware is a kind of malicious pastime that makes use of local, valid gear constructed right into a machine to execute a cyber attack. Unlike conventional malware, fileless malware does now no longer require an attacker to put in any code on a target's machine, making it tough to detect.
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If there are 10 millimeters per centimeter and you have an object that is 50 millimeters long, how many centimeters long is it?
Answer:
5 centimeters
Explanation:
Two evolutionary processes that may produce a cline in a human allele or trait are?
Two evolutionary processes that may produce a cline in a human allele or trait are gene flow and genetic drift.
What is genetic Drift?
Genetic drift is the arbitrary change in the population's frequency of a gene variant that already exists. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity. Additionally, it can make previously uncommon alleles far more common and even fixed.
What is gene flow?
The phrase "gene flow" refers to the processes through which genes are transferred from one group to another. Gene flow in anthropology more broadly refers to allelic change brought on by people moving from one place to another.
Hence, in both the cases the allelic frequency is changed and thus with the mutation and natural selection new clines can be formed.
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_____ tissue covers external and internal surfaces.
a. nervous
b. connective
c. epithelial
d. muscle
Epithelial tissue covers external and internal surfaces.
In the field of science, epithelial tissue can be described as the tissues which line the internal surfaces of organs and cover the external surfaces in the body of an organism. Hence, the correct option is c. epithelial tissue.
The epithelial tissues of the body perform various functions such as protecting the other body tissues. There are certain epithelial tissues present in the glands which aid in the secretion of various enzymes and hormones. They also aid in the absorption of materials in the liver and lung cells. They help in the process of excretion by producing sweat. They also help the kidneys in filtering blood.
Option a is not correct because nervous tissues are in the interior of the body.
Option b is not correct because connective tissue covers the internal organs but it is not present in external surfaces.
Option d is not correct because muscle tissues are present in the interior of the body, not the exterior.
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Visual processing begins in the primary visual cortex, located in the the __________ lobe. a. frontal b. occipital c. parietal d. temporal please select the best answer from the choices provided a b c d
The primary visual cortex is located in the (b) occipital lobe and it is where visual processing begins.
In both cerebral hemispheres, the primary visual cortex is located in the occipital lobe. It encircles and extends into the calcarine sulcus, a deep sulcus. Although the main visual cortex occupies only a small percentage of the occipital lobe's visible cortex, it occupies a sizable portion of the cortex' overall surface due to its extension into the calcarine sulcus.
Due to the existence of a broad band of myelinated axons that runs along the borders of the calcarine sulcus, the primary visual cortex is occasionally also referred to as the striate cortex.
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Answer:
B. occipital
Explanation:
When individuals' genes may systematically relate to the types of environments they are exposed to, it is called?
When individuals' genes may systematically relate to the types of environments they are exposed to, it is called heredity-environment correlations.
Gene is the basic unit of inheritance. It encodes the information for any trait that is expressed by means of formation of proteins. Each gene can have its two or more alternative forms that are called allele. These alternative forms are the result of mutations.
Heredity-environment correlation is the effect on a gene due to hereditary and environmental factors and the result that emerges out of it. These correlations can have three mechanisms: (a) Passive gene-environment correlation; (b) Evocative (or reactive) gene–environment correlation; and (c) Active gene–environment correlation.
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By definition, prokaryotic cells do not possess __________.
a) replication machinery.
b) ribosomes.
c) a nucleus.
d) membrane bilayers.
The correct option is (c) Nucleus.
By definition, prokaryotic cells do not possess nucleus.
Describe prokaryotic cell.Prokaryotic refers to a form of cell that lacks a true nucleus or organelles that are attached to membranes. Unlike bacteria and archaea, which are based on prokaryotic cells, all other forms of life are eukaryotic. On the other hand, prokaryotic organisms are incredibly common and make up a sizable fraction of the biomass on Earth. Prokaryotic cells are seen in organisms that have only one cell. The prokaryotic cell, which gives it the term "prokaryotes," possesses a variety of elements that allow it to function as a living entity. Prokaryotes are first covered by a cell membrane. They may design a specific environment for metabolic reactions within the cytosol with the aid of this membrane. Second, these cells have free DNA as well as ribosomes.
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Functional groups containing _____ and _____ atoms usually increase the polarity of a molecule.
Answer:
Functional groups containing Oxygen and Nitrogen atoms usually increase the polarity of a molecule.
Explanation:
Oxygen is one of the most important elements in the periodic table. Its atomic number 8 and atomic mass is 16. About 1772, a Swedish scientist named Carl Wilhelm Scheele made the discovery of oxygen. Some compounds like alcohol, water, carboxylic acids, ketones and many others contain oxygen which make them polar. Among all these compounds water is the most important oxygen containing compound.
The scientific name for nitrogen is N, and it is a flavorless and colorless element. The ground beneath our feet contains nitrogen, as does the water that we drink as well as the air we inhale. Atmosphere contains about 78% of Nitrogen. Nitrogen containing compounds are ammonia, nitric acid and many others. Both oxygen and nitrogen make a compound polar.
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Albinism in humans is sometimes caused by a mutation in the oca2 gene. albinism is a _____ while the mutant dna sequence in the oca2 gene that causes albinism is a
Albinism in humans is sometimes caused by a mutation in the oca2 gene. albinism is a phenotype while the mutant dna sequence in the oca2 gene that causes albinism is a genotype.
Mutations withinside the OCA2 gene reason a disruption withinside the regular manufacturing of melanin; therefore, inflicting imaginative and prescient issues and discounts in hair, skin, and eye color. Oculocutaneous albinism as a result of mutations withinside the OCA2 gene is known as oculocutaneous albinism kind 2.
OCA2 is related to mutations withinside the OCA2 gene, previously known as the P gene. Oculocutaneous albinism kind 3 (OCA3) became to begin with defined withinside the African population.The maximum not unusualplace shape is kind 1, inherited with the aid of using a gene mutation at the X chromosome.
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Which inclusion body allows for storage of excess carbon and can be considered a bacterial version of fat?
Polyhydroxbutyrate is the inclusion body allows for storage of excess carbon and can be considered a bacterial version of fat
What is inclusion body ?Bacteria contain aggregated protein fragments called inclusion bodies. They are permeable but have a higher density than many other parts of the cell. In a bacterial or eukaryotic cell, they typically serve as sites of viral growth and are typically composed of viral capsid proteins.
The inclusion bodies function as containers. Glycogen is a kind of energy and carbohydrate storage.Aggregations of viral proteins and virus particles, such as those for the Cucumber mosaic virus, are examples of viral inclusion bodies in plants (like the cylindrical inclusions of potyviruses).Learn more about Inclusion bodies here:
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A client is prescribed an optic eye medication that will mimic the action of the sympathetic nervous system. the nurse expects that this medication will:______
A client is prescribed an optic eye medication that will mimic the action of the sympathetic nervous system. the nurse expects that this medication will: dilate the pupil.
What is sympathetic nervous system?
A network of neurons in your body called the sympathetic nervous system aids in the "fight-or-flight" reaction. When you're under stress, in danger, or engaged in physical exercise, this system becomes more active. Its effects include accelerating respiration and heart rate, enhancing vision, and slowing down bodily functions including digestion.
The sympathetic nervous system regulates the muscles that enlarge the pupil.
Question:
A client is prescribed an optic eye medication that will mimic the action of the sympathetic nervous system. The nurse expects that this medication will:
1. prepare the eye for near vision.
2. increase the ability of the eye to tear.
3. constrict the pupil.
4. dilate the pupil.
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51. how do the differences in amino acid sequences lead to different protein functions?
Different amino acid produce different proteins based on the bonds formed between them .
How does the sequence of amino acids affect the functions of protein ?Organic substances known as amino acids have both amino and carboxylic acid functional groups. Although there are hundreds of different amino acids in nature, proteins, which are made up of alpha-amino acids, are by far the most common. In the genetic code, only 22 alpha amino acids are present.
The sequence of amino acid of a protein determines protein shape , since the chemical properties of each amino acids are forces that gives rise to intermolecular interaction to begin to create secondary structure .
Amino acids are monomers of protein. So , different amino acids produce different proteins based on the bonds formed between them.
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Epithelial cells of kidney tubules may have many microvilli. what is the reason for the microvilli?
To expand the surface area of the tubule and maximize the reabsorption of vital chemicals, the cells lining the proximal convoluted tubule develop microvilli. Microvilli are hair-like protrusions that come from a cell's nucleus.
Reabsorption- Water and other solutes are reabsorbed as they return from the tubule to the plasma. Over the whole length of the renal tubule, various amounts of water and particular solutes are reabsorbed.
Proximal Convoluted Tubule (PCT)- Between Bowman's capsule and the loop of Henle, the proximal convoluted part of the vertebrate nephron plays a key role in the resorption of water, sodium, and chloride ions, and sugar from the glomerular filtrate.
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The rigid ______ of most bacterial cells surrounds the cell membrane, protecting the cell and giving the cell shape.
Answer:
cell wall
Explanation:
The binding of a signal molecule called a(n) ____________ alters the shape of the active site such that it cannot bind the substrate
activator
The binding of a signal molecule called a activator , alters the shape of the active site such that it cannot bind the substrate.
What triggers cellular Signaling?Typically, different signaling molecules deliver chemical signals to cells. A chain of events is started when a signaling molecule binds to the right receptor on a cell surface, which not only sends the signal inside the cell but also amplifies it.What three categories do signaling molecules fall under?Hormones, neurotransmitters, regional transmitters, and pheromones are the four primary categories of signaling molecules. Each one performs a different job in the body and has a different spectrum of activity.What is a signal-producing molecule?As a broad term for molecules that particularly attach to other molecules, "ligand" is frequently used to refer to signaling molecules (such as receptors). The message sent by a ligand is frequently transmitted inside the cell through a series of chemical messengers.To learn more about cell signaling visit:
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Which of Earth's layers is just below the crust?
O A. Outer core
O B. Upper mantle
• C. Inner core
• D. Lower mantle
Answer:
Upper mantle
Explanation:
I looked it up
A bag contains 6 clear marbles and 4 red marbles one marble is drawn from the bag and replaced a second marble is drawn from the bag and replaced what is the probability of getting a clear marble the first time and a red marble the second time
Answer:
4/25
Explanation:
bag contains 6 clear marbles and 4 red marbles = 6+4=10
chance of red marble = 4/10
4/10=2/5
Now, probability of getting a red marble the first time AND a red marble the second time = (2/5) x (2/5)=4/25
Identify the different forms of carbohydrates.
a. disaccharide
b. polypeptide fatty acid
c. polysaccharide
d. monosaccharide
The classes of carbohydrates are:
monosaccharides disaccharidespolysaccharidesCorrect answers are A, C, D.
What are carbohydrates?Carbohydrates are biomolecules which are composed of carbon, hydrogen and oxygen, where the hydrogen and oxygen in the compounds are in a ratio of 2 : 1.
The classes of carbohydrates in include:
monosaccharides or simple sugars e.g. glucosedisaccharides - contains two simple sugars e.g. maltosepolysaccharides - contains monomers of simple sugars e.g. starchIn conclusion, carbohydrates are essential biomolecules.
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The _______ nervous system conveys signals from the body's sensory receptors to the central nervous system and transmits messages back to the muscles and glands.
Answer:
the answer is
Explanation:
the -peripheral- nervous system
The american alligator is considered a keystone species in the everglades system because its presence leads to an increase in the:_______
The American alligator is a keystone species because its presence leads to an increase in the abundance/diversity of fish, the bioavailability of the aquatic environment, as well as in wading birds.
What is a keystone species?A keystone species is a given species in an ecosystem whose presence is fundamental to maintaining the biodiversity and features of such environment.
In conclusion, the American alligator is considered a keystone species in the everglades system because its presence leads to an increase in the abundance/diversity of fish, the bioavailability of the aquatic environment, as well as abundance/diversity in wading birds.
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Slowing signals between neurons is a function of __________. a. excitatory receptors b. excitatory neurotransmitters c. inhibitory receptors d. inhibitory neurotransmitters please select the best answer from the choices provided a b c d
Answer:
b excitatory neurotransmitter
Answer: D
Explanation:
i took the test
Recurrent sexually arousing fantasies and behaviors involving nonhuman objects is an indication of:_________
Recurrent sexually arousing fantasies and behaviors involving nonhuman objects is an indication Paraphilias
Intense sexual fantasies, impulses, or behaviors that frequently involve nonhuman objects are known as paraphilias. These paraphilias make the patient, the patient's partner, the patient's kids, and other non-consenting people suffer or feel humiliated. The symptoms of many people with hypersexuality, however, entail more socially acceptable behaviors; these symptoms have been described as compulsive, addictive, or impulsive. Although the exact causes of paraphilias in persons are unknown, some evidence suggests that there may be a prenatal neurodevelopmental link.
Paraphilia symptoms may include compulsive attention that interferes with an individual's attempts to think about other things or participate in more traditional sexual behavior with an age-appropriate partner. Patients with paraphilia may experience depression or anxiety, which paraphilic behavior can temporarily alleviate, starting an addictive cycle.
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In people with schizophrenia, the amount of gray matter in the temporal and frontal cortexes is?
In people with schizophrenia, the amount of gray matter in the temporal and frontal cortexes is progressively reduced.
schizophrenia is a brain disorder when the ability of a person is reduced to think, feel, and behave clearly even in normal situations. it can be caused due to a variety of reasons including genetic, environmental factors.
It can cause social isolation, disorganized thoughts, aggression, and difficulty in concentration.
schizophrenia said to be associated with a reduced in the gray matter of the brain including the temporal and frontal cortex.
Grey matter is present is the outermost layer of the brain.
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The atomic mass of fluorine is 18.998 which we will round to 19. The atomic number of fluorine is 9. How many neutrons does fluorine have?