Only acetylcholine. In addition to acting as a transmitter for the parasympathetic and somatic motor systems, acetylcholine (Ach) also has significant central nervous system effects.
At their connections with skeletal muscle fibers, all somatic motor neurons produce acetylcholine (ACh). The result is always excitatory, and the muscle fibers contract if the stimulation hits the threshold. At neuromuscular junctions, somatic motor neurons use the neurotransmitter acetylcholine to activate skeletal muscle fibers. In addition to controlling the body's voluntary motions, the somatic nervous system is also responsible charge of reflexes, a particular class of involuntary muscle reactions that are regulated by a cerebral pathway known as the reflex arc.
The complete question is:
All somatic motor neurons produce __________.
both epinephrine and norepinephrine
only norepinephrine
only acetylcholine
both acetylcholine and norepinephrine
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What method of gene regulation or gene expression is the most common for eukaryotic
genes?
transcription factors
miRNA
dicer enzymes
mRNA degradation
Answer:
Transcription factors
Explanation:
This is because Eukaryotic gene expression is regulated by transcription factors and RNA processing, which occur in the nucleus, and during protein translation, in the cytoplasm.
Transcription in eukaryotic cells is controlled by proteins . These proteins then bind to some specific regulatory sequences and try to control the activity of RNA polymerase. The Gene expression is regulate by transcriptional regulatory proteins . Also ,the packaging of DNA into chromatin and methylatiin indicate levels of complexity to the control of eukaryotic gene expression.
Which of the following is true of Darwin's theory of natural selection?
A. Individuals with a favorable traits are most likely to survive and reproduce.
B. There is no variation in organisms in a population.
C. Only a small number of offspring in a population are born.
D. All individuals in a population ahve the same genetic traits
Answer:
A) Individuals with favorable traits are more likely to survive and reproduce.
Explanation:
I think it's correct???
is it wrong for parents to give female hormone pills to there little sons, without there consent?
CO
Ecosystem productivity is principally limited by
a. sunlight and nutrient availability
b. water and nutrient availability
the availability of time and nutrients
d. none of the above
C.
Please select the best answer from the choices provided
A
B
Answer:
a. sunlight and nutrients availability.
hope this helps you ☺️☺️
Answer:
A
Explanation:
Please Please Help Me!!!
Describe an experiment used to prove that amino acids and sucrose go up and down the phloem.
Answer:
By using carbon-14 in the experiment in order to prove the statement.
Explanation:
Translocation occurs in the plant body in order to transport amino acids and sucrose from one part to another by the phloem tissues. In order to prove this, we have to incorporate radioactive element in the amino acid or sucrose which shows us that through which layer the amino acids and sucrose move in the plant body. For this purpose, carbon-14 can be used to trace the path of the translocation of amino acids and sucrose. Through this experiment we will find out that phloem layer is the path used by the plant to move amino acids and sucrose from one part to another.
Most nonrenewable energy resources are burned for us to use their energy. Which of the following is a nonrenewable energy source that is NOT burned?
A) nuclear
B) coal
C) natural gas
D) biofuels
Answer:
The correct answer is - A) nuclear.
Explanation:
Most of the non-renewable sources of energy are fossil fuels that are formed by the thermal decomposition of dead organic matter for million years and are converted to lighter hydrocarbons that contain high electrostatic potential energy.
Burning is the process that breaks the hydrocarbons into water vapor and CO2 with high amount of energy. Coal, natural gas and biofuels all three are fossil fuels and nuclear products are not fossil fuel but radioactive elements.
If the population of tree were destroyed due to deforestation what is the most likely to outcome of this food chain 
Answer:
A
Explanation:
The primary would decrease due to no trees
water vapor changing to liquid water
A.evaporation
B.condensation
C.precipitation
D.water cycle
4. The suns energy causes water to change from liquid to gas during the process of ..
A. precipitation
B. condensation
O C. evaporation
O D. Water cycle
why do you think farmers are not using cover cross?
Please help will give brainliest
Answer:
a. domain
Explanation:
I am assuming that you are looking for the largest system, in that case it is domain.
From this list, it goes
Domain>kingdom>phylum>taxonomy
hope this helps :3
ANSWER THESE THREE QUESTIONS PLSS!! I WILL GIVE YOU BRAINLYEST!! NO LINKS!!
How do pollutants get into groundwater?
What is the purpose of the dam located in
this watershed?
What impact can a dam have on this
ecosystem?
Answer:
they go underwater to do things like breathe
Explanation:
If the original cell
(parent cell) has 30
chromosomes, how
many chromosomes
will the new cells
have?
When is extinction of a species most likely to occur?
A. when environmental conditions change and the adaptive traits of the species favor the survival and reproduction of some of it's members
B. when environmental conditions remain the same and the proportion of individuals within the species that lack adaptive traits increases
C. when environmental conditions change and the members of the species lack adaptive traits to survive and reproduce
D. when environmental conditions remain the same and the proportion of individuals within the species that possess adaptive traits increases
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Which term best completes the diagram below?
nucleus
cell
molecule
O muscle
Cells: Question 10
Which of these structures would be classified as an organ?
Select one:
A)A ciliated cell within the respiratory tract
B)Multiple types of tissues that work together to filter wastes from the blood
C)A liquid that contains proteins, salts, and water
D)A group of square-shaped cells surrounding a tubule
Answer:
The answer would be B.
Explanation:
An organ is a group of cells that form tissue which then make up an otgan. A group of Tissues is an Organ and tgat orgab serves a specific function in the body. The group of tissues is the organ, and the filter of waste from the blood is the function.
how is modern earth different from earth over four billion years ago?
(04.05 MC)
Which claim best supports the cycling of carbon through the spheres of Earth?
Answer:
Burning fossil fuels adds the necessary amount of carbon in the atmosphere for cellular respiration to take place
How do animals help recycle carbon atoms?
Answer:
animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon. The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale
Answer:
In animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon. The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale.
Explanation:
When yellow guinea pigs (Y) are crossed with white guinea pigs (W), cream-colored offspring (YW) are produced. Can a pet-store owner mate two cream-colored guinea pigs and get a white guinea pig?
Answer:
It is possible.
The above image shows the descendants of one type of finch and the variation in the finch
species that occurred over many generations. Which of the descendant species above developed
an adaptation for getting insects from narrow cracks in the bark of trees?
Questions and Answers on photo.
Zoom in if needed
Help :(
Answer:
The question didn't really make that much since to me but I think its the second answer.
Explanation: If you think about it being able to adapt to a new place is really helpful when it comes to life, especially after a natural disaster
What is the main body system affected from sickle cell anemia?
Answer choices:
Digestive System
Nervous system
Circulatory System
Respiratory system
Muscular System
Skeletal System
Answer:
Circulatory system
Explanation:
It flows through your blood and it can affect your veins,arteries,heart,ect
Which of the following examples best define multiple alleles?
a.Pea plants have different genes that code for
a various different traits such as shape, size, height,
and flower color.
b.The wing size of drosophila flies is controlled by
three alleles.
с.Snapdragon flowers hawthree genotype
combinations for red, pink, or white coloration.
d.There are over eight genes that influence human
eye color.
Answer: The correct answer is b.
Explanation:
If two-hybrid Ff rabbits mate, what will the offspring look like?
Answer:
25% FF - homogenous dominant
25% ff - homogeneous recessive
50% Ff - heterogenous
Explanation:
When two-hybrid Ff rabbits mate, then the offspring look like
25% FF - homogenous dominant25% ff - homogeneous recessive50% Ff - heterogenous.What is Mating?For the goal of sexual reproduction, opposite-sex or hermaphrodite organisms team together during mating. Two gametes join together during fertilisation. When two sexually reproducing creatures join their sex organs, internal fertilizations and insemination take place.
Punnett Square situations with two hybrid parents marrying are frequent. The heterozygous hybrid parents possess a single allele (A and a, Dominant and Recessive). There are four genotype outcomes that can happen if two hybrid parents mate.
Thus, when two-hybrid Ff rabbits mate, then the offspring look like
25% FF - homogenous dominant25% ff - homogeneous recessive50% Ff - heterogenous.Learn more about Mating, here:
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Why are silent mutations possible for some of the amino acids?
Answer:
That's possible because proteins are encoded by "triplets" of nucleotides, each responsible for adding a particular amino acid to the protein chain. A change in one nucleotide, however, doesn't always change the triplet's meaning; the mutated triplet may still add the same amino acid.
Explanation:
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The plant helps with which part of the nitrogen circle?
Cory states the following argument about the evolution of aardvarks and anteaters.
"Aardvarks and anteaters both use long, sticky tongues to capture and eat ants or termites. Aardvarks are native to Africa, while anteaters are native to the Americas. However, their similarities provide evidence that both groups of species evolved from a common ancestor that used its tongue to eat ant-like insects."
Which claim, if supported by evidence, would provide the strongest counter-argument AGAINST Cory's argument?
A. The tongues and diet of aardvarks and anteaters are an example of convergent evolution.
B. The tongues and diet of aardvarks and anteaters are an example of adaptive radiation.
C. The Americas and Africa were once joined together, and animals roamed freely between the two lands.
D. A long, sticky tongue evolved in response to the tunneling behavior of ants, an example of coevolution.
In pea plants, peas can be green or yellow in color. Assume that green peas are dominant to yellow peas. Is it possible for two plants with green peas to produce any offspring with yellow peas?
vocabulary words to use in response: dominant allele, recessive allele, , heterozygous, genotype, phenotype
Answer:
No.
Explanation:
Turns out they have yellow peas because the yellow version, Y, is dominant over the recessive green version, y. Y always wins out over y: When a pea plant makes seeds, only one of its two copies of the color gene goes into the seed. So if you have two green pea plants, each can only pass a green version.
Answer:
No.
Explanation:
Turns out they have yellow peas because the yellow version, Y, is dominant over the recessive green version, y. Y always wins out over y: When a pea plant makes seeds, only one of its two copies of the color gene goes into the seed. So if you have two green pea plants, each can only pass a green version.
If data for the growth of this bacterial population continued to be recorded, would the data point at 60 hours be above or below 37 million? Support your answer.
Answer:
Above 37 million
Explanation:
Explanation in picture below
Growth of bacterial cultures is defined as an increase in the number of bacteria in a population rather than an increase in the size of individual cells.
Thus, Bacterial population growth occurs geometrically or exponentially: in each division cycle (generation), one cell produces 2 cells, then 4 cells, then 8 cells, then 16, then 32, etc.
The relationship shows that the average generation time is constant and the growth rate of the bacterial population is proportional to the number of bacteria at any given time.
This relationship is valid only during the period when the population grows exponentially, ie. in the logarithmic phase of growth. Therefore, graphs showing the growth of bacterial cultures are plotted as the logarithm of the number of cells.
Thus, Growth of bacterial cultures is defined as an increase in the number of bacteria in a population rather than an increase in the size of individual cells.
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