In 2003, Tyrone Hayes proposed that pesticides could be the cause of worldwide amphibian declines. This statement is an example of hypothesis.
Pesticides are the chemicals used to kill or slow the growth various pests and small insects in the farm fields. These pesticides can be harmful to other species as well. Pesticides are further divided into three types: insecticides, herbicides and fungicides.
Amphibians are the vertebrate animals that live in land as well as water. These are cold-blooded animals. Most of the amphibians have a moist skin and may have scales on their body. The example of amphibians are: toads, salamanders, newts, etc.
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The ___________ is the thin layer of the mucosa responsible for pulling the mucosa into its many folds which increases the surface area of the alimentary canal.
Muscularis mucosa
The Muscularis mucosa is the thin layer of the mucosa responsible for pulling the mucosa into its many folds which increases the surface area of the alimentary canal.
The mucosa's outermost layer is called the muscularis mucosa. Elastic fibers and 3–10 smooth muscle cells make up its structure, which is often divided into an inner circular layer and an outer longitudinal layer. From the muscularis mucosa, smooth muscle cells may expand into the lamina propria and the villi.Where can you find the muscularis mucosa?The oesophagus and the large intestine, particularly in the terminal region of the rectum, have exceptionally well-developed muscularis mucosae. Additionally, the villi or spaces between the tubular glands of the stomach and large intestine contain isolated muscle cells descended from the muscularis mucosae.To learn more about muscularis mucosa visit:
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A process for determining whether data from genetic crosses are consistent with a specific pattern of inheritance is called?
Data from the genetic crosses are consistent with the specific pattern of the inheritance is called as Punnett square
The Punnett square is the table in which the all of the possible outcomes for the genetic cross between the two individuals with the known genotypes are given. In its the simplest form, the Punnett square was consists of the square divided into the four quadrants. A Punnett square was a chart that is allows you to easily determine the expected the percentage of the different genotypes in the offspring of two parents. An example of the Punnett square for the pea plants is shown as below. In this example, both the parents are heterozygous for the flower color (Pp).
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The proteins and cell components of halophiles have remarkably high intracellular levels of ________, which helps them survive in high salt conditions.
The proteins and cell components of halophiles have remarkably high intracellular levels of potassium, which helps them survive in high salt conditions. Proteins are big, complex molecules that perform numerous important functions in the body. Every protein is designed to perform a certain purpose. Any protein in the human body may be made with only 20 amino acid variations.
The seven categories of proteins are: contractile proteins, enzymes, hormone proteins, structural proteins, storage proteins, and transport proteins. They carry out the majority of the work in cells and are crucial for the structure, operation, and control of the body's tissues and organs.
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What is the purpose of a control group in a scientific experiment?
O to ensure that experimental results support the hypothesis
O to be a backup if something goes wrong with the experiment
O to serve as a basis of comparison with the experimental group
O to represent what happens when a variable is manipulated
Answer:
It is Between A & D. I think it's D.
Bladder wrack grows more quickly than saw wrack.
Suggest an explanation why.
Answer: The bladders hold lots of air.
In the _____ cell signaling mechanism, the chemical messenger acts upon the cell producing the signal.
In the autocrine cell signaling mechanism, the chemical messenger acts upon the cell producing the signal.
Autocrine signaling is the process in which the chemical messenger secreted by a cell binds to the receptor pf the same cell and therefore, some change occurs in the cell. The example of this signaling is the T-lymphocyte proliferation, upon entry of foreign pathogen t cell can stimulate its own proliferation.
Chemical messenger are the molecules that are function to carry some signal or message from one part of the body to another. The examples of chemical messengers are the hormones, ligands, neurotransmitters, etc.
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If an atom has 14 protons, 11 neutrons, and 17 electrons, what is the atom's electrical charge?
Answer:
It would be=
14 protons -
17 electrons=
-3 :D
When you subtract protons from electrons, you get the electrical charge.
Explanation:
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If a dna-binding protein "reads" a short stretch of dna and detects the following "second" genetic code provided by the functional groups located on each base as h-hd-ch3-ha-ha-ha-ha-hd, then what is the corresponding sequence of bases?.
The corresponding sequence of the bases is C-T-G-A.
DNA binding proteins- Due to their ability to bind to DNA, these proteins are known as DNA-binding proteins. DNA-binding proteins perform a variety of tasks, including as regulating the synthesis of proteins, controlling cell growth and division, and storing DNA inside the nucleus.
Protein Synthesis- The method through which ribosomal RNA, transfer RNA, messenger RNA, and different enzymes are used to organize amino acids into proteins in a linear fashion.
Amino acid- Proteins are made up of substances called amino acids.
C stands for Cytosine, T stands for Thymine, G stands for Guanine, A stands for Adenine.
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In addition to burning fossil fuels, humans return co2 to the atmosphere faster than it can be removed by:__________
In addition to burning fossil fuels, humans return co2 to the atmosphere faster than it can be removed by plants.
What are fossil fuels?Fossil fuels are created from decaying plants and animals. These fuels may be burned to provide energy and are present in the crust of the Earth. Fossil fuels include things like coal, oil, and natural gas.
Fossil fuels are used to create energy; they are burned in homes to create heat, in huge power plants to create electricity, and they are also used to power engines.
Fossil fuel air pollution can result in acid rain, eutrophication (extra nutrients that can impact aquatic ecosystems by lowering oxygen levels), damage to crops and forests, and harm to wildlife. Fossil fuels contribute to water pollution through oil spills and fracturing fluids.
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Which cell, at the end of the arrow, is present in many connective tissues and can differentiate into different types of cells?
Answer:
primary cells are not always present but people make use of secondary cells
Explanation:
primary cells are not always present but people make use of secondary cells
A wildebeest can provide a total kf 2000,000 kcal. however, the total cost to hunt and kill a wildebeest is 50,000 kcal.!8( lions cannot spend more than 15,000 kcal per hunt, how many lions need to be in on the hunt
To hunt and kill a wildebeest, 4 lions need to be in on the hunt.
To measure the energy we use the unit kilo calories (kcal).
Given that the total energy cost to hunt and kill a wildebeest is 50,000 kcal and the maximum energy that can be spent by a lion is 15,000 kcal.
The number of lions needed to hunt and kill a wildebeest can be calculated by dividing 50,000 kcal by 15,000 kcal
Number of lions = 50,000/15,000
= 3.33 lions
As this value is not a whole number, the number of lions can either be 3 or 4.
As 3 lions will not be enough for the hunting, therefore 4 lions are needed.
Thus, to hunt and kill a wildebeest, 4 lions need to be in on the hunt.
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respira
photosynthesis are two of the major processes involved in cycling carbon
through the carbon cycle. Examine the model. How does cellular respiration cycle carbon
compounds through the biosphere? Choose the TWO choices that apply.
Sunlight
Carbon Cycle
CO₂ in the
atmosphere
Photosynthesis
by producers
Plant
respiration
Carbon fixation
by consumers
Animal
respiration
Decomposition
Fossils and fossil fuels
Fossil fuel
combustion
Cellular respiration absorbs carbon dioxide from the atmosphere.
Cellular respiration releases carbon dioxide into the atmosphere.
Cellular respiration uses carbon containing compounds to produce ATP.
Cellular respiration absorbs carbon containing compounds from the soil.
Cellular respiration releases carbon containing compounds into the soil.
Each individual cell in an excel worksheet area is identified by a letter and number combination, such as a2, known as the?
Cell reference or cell address refers to a combination of column specified by alphabets A-Z and rows specified by numbers that can be used to locate an exact cell in a spreadsheet.
This cell address makes operation on the worksheet easier eliminating the stress of manually locating cells whenever you are working. For example, in the summation of two numbers in different cells, the cell address for the two numbers can be entered in any desired cells with the operator symbol included. Hence, it’s common to see A1, B2, and C3, on the excel worksheet. In fact, the excel worksheet was built on the basis of cell referencing.
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Animals are able to conductphotosynthesis:____.
A. not cellular respiration.
B. net o 2 consumers and co 2producers.
C. net o 2 and co 2producers.
D. net o 2 producers and co 2consumers.
E. net o 2 and co 2consumers.
Animals are :
B. net o 2 consumers and co 2producers.
All living organisms produce energy through cellular respiration, which is found in both plants and animals. Food is broken down and absorbed by the cells as glucose molecules when it is consumed and digested by an animal. They simultaneously take in oxygen, which enters the cells through the bloodstream, lungs, and other organs. The components and environment are ready for cellular respiration to begin once glucose and oxygen enter the cytoplasm of the cells.
The bodily processes that are powered by ATP include breathing, blood circulation, digestion, reaction to stimuli, muscle movement, and cell division, repair, and growth (matter). Energy is used in everything an animal does.
Animal Cellular Respiration (Human Example):
1) Digest a piece of pie and begin.
2) Pie is broken down into carbohydrate molecules during digestion.
3) Glucose molecules are created when carbohydrate molecules disintegrate.
4) In the mitochondria of the cells, glucose molecules are transformed into ATP along with oxygen from breathing (energy).
Cellular respiration is a multi-stage process that releases carbon dioxide and water while converting glucose and oxygen into ATP, the cellular form of energy. The equation:
C6H12O6 (1 glucose molecule) + 6 O2 ---> 6 CO2 + 6 H2O + 36 ATP (Energy)
carbohydrate + oxygen ---> carbon dioxide + water + ATP (Energy)
In animals, 1 molecule of glucose and 6 molecules of oxygen are converted into approximately 36 molecules of ATP, 6 molecules of water, and 6 molecules of carbon dioxide during cellular respiration.
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The emt should recognize normal cellular metabolism as:____.
a. glycolytic.
b. aerobic.
c. anaerobic.
d. ambient.
The EMT should recognize normal cellular metabolism as Aerobic.
What is aerobic?
Aerobic cellular metabolism refers to the process by which living organisms convert nutrients into energy for the body to use via the oxidization of nutrients.
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In a human somatic cell (normal body cell) that is in g2, what would be true about chromosome number and structure? check all that apply.
Diploid- The terminology "diploid" describes an organism's cells having two full sets of chromosomes, with one chromosome from each parent present in each pair. Since humans are diploid, the majority of their cells have 23 pairs of chromosomes.
Chromosome- A component that can be found in a cell's nucleus. Proteins and DNA are arranged into genes on a chromosome. There are typically 23 pairs of chromosomes in each cell.
Sister Chromatid- Sister chromatids are identical duplicate copies of one chromosome that are joined to one another.
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What is the hydrolysis of atp and preparation for reattachment to the thin filament by the myosin head called?
The hydrolysis of atp and preparation for reattachment to the thin filament by the myosin head called the recovery stroke.
What is myosin ?Myosins are a class of motor proteins well recognized for their functions in the contraction of muscles and a variety of other eukaryotic motility processes. They are ATP-dependent and in charge of motility based on actin. By Wilhelm Kühne, the first myosin was identified in 1864.
When the myosin pulls the actin what is happening?The actin is drawn along by the myosin head as it advances in the direction of the M line. The filaments migrate nearer the M line by around 10 nm as the actin is tugged. The power stroke is the name given to this motion because it is where force is generated.
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List the importance of a binomial system of nomenclature.
Answer:
Binomial Nomenclature is important because it allows people from all over the world to communicate unambiguously about the various plant and animal species. Also, it makes sure that every scientific name is unique.
The small, almond-shaped organs of the female reproductive system, suspended by ligaments in the upper lateral portion of the pelvic cavity are known as?
The small, almond-shaped organs of the female reproductive system, suspended by ligaments in the upper lateral portion of the pelvic cavity are known as ovaries.
Ovaries are oval-shaped so are also termed almond-shaped organs and are present on the sides of the uterus in females. In females, the processes of pregnancy and ovulation which is also termed menstruation are controlled by the hormones that are made by ovaries. These hormones include estrogen and progesterone. Another major function of the ovary is that it releases the female gametes known as eggs during the menstrual cycle.
The ovaries are attached to two types of ligaments which are the ovarian ligament and suspensory ligament. Ovaries are connected to the womb by the ovarian ligament while the suspensory ligaments of the ovary contain the ovarian vessels and nerves.
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Explain how diffusion provides a steady supply of oxygen and eliminates carbon dioxide for a cell undergoing cellular respiration.
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
When the receptor cells have registered a _____, the energy is converted to an electrochemical impulse.
When the receptor cells have registered a Stimulus sensory organs the energy is converted to an electrochemical impulse.
What is meant by electrochemical impulse?They communicate among centers in the central nervous system and they command your muscles to move. Nerve impulse are electrochemical events. Observed as an electrical event , a nerve impulse is called action potential.
Without nerve conduction, the process by which nerve impulses travel along our neurons, none of our perceptions, thoughts, or memories would be possible. Nerve conduction is an electrochemical process, which means it involves the use of electricity generated by chemical molecules.
Stimulus sensory organs like ear, eyes, nose, skin and tongue are called sensory organs. Stimulus is visual, taste, touch, smell and hear.
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Sour dough bread is made sour by a decrease in ph caused by the acids produced by lactic acid bacteria.
a. true
b. false
Answer:
Sour dough bread is made sour by a decrease in ph caused by the acids produced by lactic acid bacteria is true.
Explanation:
A combination of flour with water is used to make sourdough, which is then fermented with yeast plus lactic acid microorganisms, especially bacteria. Then the starter's acids are what gives the bread its sour flavor. The starter has the ideal conditions to ferment and develop that particular sour flavor because of the components and a warm atmosphere. Find a cold environment for something like the dough to form if you want to produce a much more sour loaf.
Depending on the state of fermenting that it is in, the sourdough's pH varies, although in average it ranges from 3.5 to 5. Because harmful microbes cannot grow in a system with a pH lower than 4.6, this happens because the acidity keeps them away.
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Which component of the membranous labyrinth is used to transmit auditory information?
The cochlea is the component of the membranous labyrinth used to transmit auditory information.
The cochlea is a hollow, spiral-shaped structure of the internal ear that plays a key role in hearing. The spiral structure of the cochlea enables it to detect various sound frequencies and helps in the transduction of the electrical impulse which is interpreted by the brain.
The sound vibrations are carried through a fluid known as endolymph. The hair cells in the organ of Corti, inside the cochlear duct, then transmit the mechanical vibrations into electrical impulses. The electrical nerve impulses are then carried by the vestibulocochlear nerve from the cochlea to the brain for interpretation.
Auditory vibrations are transmitted by the tympanic membrane and through the labyrinth, the fluid inside the cochlea. This fluid then activates the organ of the corti which then processes the vibrations to produce electrical impulses and then send them to the brain.
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Neurons have a very limited ability to divide after injury because most neurons lack which organelle(s)?
centrioles
Neurons have a very limited ability to divide after injury because most neurons lack with centrioles.
This is because centrioles function in cell division, the fact that neurons lack these organelles is consistent with the amitotic nature of the cell.
Role of centrioles:Animal cells' cytoplasm contains a pair of barrel-shaped organelles called centrioles that are close to the nuclear envelope. The skeletal framework of the cell, the microtubules, are organized by centrioles. They aid in identifying the locations of the cell's nucleus and other organelles.The centriole's main job is:A. emergence of spindle fibers.
B. creation of the nucleus.
C. the starting of cell division.
D. development of the cell plate.
What occurs in the absence of Centriole?Scientists have discovered that cells without centrioles exhibit a delay in spindle assembly and a higher rate of chromosomal instability. A faulty or asymmetric mitosis is produced, and apoptosis is also triggered.To learn more about centrioles visit:
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In meiosis, how does prophase i differ from prophase ii (choose all that apply)?
One diploid cell is present during prophase I, while two haploid cells are present during prophase II.
Describe haploid:Haplotype refers to a cell having just one pair of chromosomes. Haplotype is another word for the number of chromosomes present in sperm or egg cells, which are frequently referred to as gametes. Each of the 23 chromosomes in human haploid cells, which make up gametes, is one of a pair that is present in diploid cells.
What is an example of a haploid?Haplotype cells include, for example, gametes (male or female germ cells). Diploid cells include those found in blood, skin, and muscle.
How is haploid generated?When a parent cell divides twice, four haploid daughter cells with just half of the original genetic material are created instead of two diploid daughter cells with the entire set of genetic material on the first division.
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at high ph dna bases are in a keto tautomeric state resulting in decreased h-bonding stability and denaturation of dna strands
At high pH DNA is susceptible to alkaline denaturation that occur due to the abundance of hydroxide ions. It breaks the hydrogen bond and remove the hydrogen ion from the DNA base pairs.
Tautomeric state occur when the instant isomerization of nitrogen base occur to an alternative hydrogen bonding form that result into mutation. After this the mutation is corrected by by DNA polymerases ability.
This automerization occur when a proton transferred from one site to another site by steps in which the solvent is intermediary.
DNA polymerases is an enzyme which is responsible for forming new copies of DNA that is in the form of nucleic acid molecules.
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The ____ of the spinal cord carries motor information from the brain to the muscles and glands
The correct answer is Descending tract of the spinal cord carries motor information from the brain to the muscles and glands.
One of the main pathways by which information travels between the body and the brain is the spinal cord. The brainstem continues caudally into the spinal cord.
Descending tract of the spinal cord.
Descending tracts provide motor information from the brain through the spinal cord to the body, such as commands to move the arm.
The primary characteristic of the musculoskeletal system that promotes locomotion is muscular contraction against a relatively fixed skeletal framework. But to move, muscle fibers need the action potentials produced by the spinal motor neurons of the anterior grey horn. Numerous upper motor neuron pathways that start above the level of tells control these lower motor neurons of the anterior grey horn in both conscious and unconscious ways (i.e. cerebral cortex, cerebellum, etc.). The actions of the upper motor neurons provide stimulatory and inhibitory modulation of the activity of the anterior horn cells, and by extension, the activity of the motor system.
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what is a flat representation of the earth's surface
When a non-enveloped animal virus adsorbs to the host cell with its protein spikes, the virions are taken into the cell by the process of:_______
When a non-enveloped animal virus adsorbs to the host cell with its protein spikes, the virions are taken into the cell by the process of endocytosis
What is endocytosis?Substances are introduced into the cell during endocytosis, a cellular process. A portion of the cell membrane that surrounds the substance to be internalised splits off to form a vesicle that holds the substance once it has been ingested. Phosphocytosis and pinocytosis are two examples of endocytosis.
By engulfing substances from the outside in a vesicle, cells can take them in through the process of endocytosis. Pathogens that immune cells engulf and eradicate can be one of these, as can nutrients that support the cell.
The movement of glucagon from the pancreas into the liver, where it is further processed for simpler absorption into the blood stream, is an example of exocytosis. delivery of protein-filled vesicles by T cells to virally infected cells.
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Phosphofructokinase is a glycolytic enzyme that is inhibited by amp .
a. true
b. false
Phosphofructokinase is a glycolytic enzyme that is inhibited by amp - False.
Phosphofructokinase is an enzyme that is involved in the process of glycolysis. It is used in phosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate. It utilizes ATP for this step.
It is one of the key regulator of the overall reaction. Its activity is regulated by ATP. Whenever more substrate is formed and more amount of ATP is present it combines with the phosphofructokinase to inhibit its enzyme activity.
AMP has a reversing effect to this. When AMP binds with the phosphofructoskinase it boost the reaction in the forward direction.
Thus the activity of the enzymes depends on the ATP/AMP ratio in the cell.
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