most postganglionic sympathetic fibers release. a. acetylcholine (ach) b. norepinephrine (ne) c. both a and b d. none of the above
Answers
Most postganglionic sympathetic fibers release b. norepinephrine (NE).
Postganglionic sympathetic fibers are part of the autonomic nervous system and transmit signals from the ganglia to their target organs or tissues. These fibers release neurotransmitters to relay signals from the preganglionic fibers to the postganglionic neurons.
In the case of the sympathetic division of the autonomic nervous system, the preganglionic fibers release acetylcholine (ACh) at the synapses with postganglionic neurons. However, the majority of postganglionic sympathetic fibers release norepinephrine (NE) as their primary neurotransmitter.
Upon release, norepinephrine acts on adrenergic receptors located on target organs or tissues, producing a sympathetic response. This response can vary depending on the specific receptor subtype and its distribution in the body.
It's worth noting that there are exceptions to this general rule. Some postganglionic sympathetic fibers innervating sweat glands, for example, release acetylcholine instead of norepinephrine.
Overall, the most common neurotransmitter released by postganglionic sympathetic fibers is norepinephrine.
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Related Questions
The air masses that originate in low latitude are called
a) polar b) tropical c) continental d) marine
Answers
The air masses that originate in low latitude are called b) tropical.
Air masses are large bodies of air with similar temperature and humidity characteristics. The air masses that originate in low latitudes near the equator are called tropical air masses. These air masses are typically warm and moist due to the high temperatures and abundant moisture present in tropical regions. As these air masses move away from the equator, they can influence weather patterns and climate in the regions they encounter.
Tropical air masses are important in shaping weather conditions in many parts of the world, particularly in tropical and subtropical regions. When tropical air masses interact with other air masses, such as polar air masses, it can lead to the formation of weather systems, including fronts, storms, and precipitation. Understanding the characteristics and movement of tropical air masses is essential for meteorologists and climatologists in predicting weather patterns and studying climate dynamics.
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What molecules are
carbon atoms in
before the chemical
change?
Answers
The women marries a man with alleles Bb for eye color what color eyes does the man have
Answers
what is 20 degrees Celsius in Fahrenheit
Answers
Answer:
68 degrees Fahrenheit
Explanation:
divide by 5 (20/5=4)
multiply by 9 (4 x 9= 36)
add 32 (36+32=68)
Answer:
68 degrees F
Explanation:
20 x 1.8 + 32
20= C
(multiply C by 1.8 then add 32!!)
Day 1 and day 2 in kokomo started with the same amount of water vapor in the air parcels over kokomo. it rained at the end of day 1 it did not rain at the end of day 2. what could have happened to the air in the parcel to cause rainfall on day 1?
Answers
The air parcels over Kokomo on day 1 and day 2 likely started with an equal amount of water vapor in the atmosphere.
However, the air parcel on day 1 likely had a different set of conditions than the air parcel on day 2. On day 1, the air parcel may have been more unstable, meaning the atmosphere was warmer near the ground and cooler higher up. This difference in temperature causes air to rise, creating an updraft.
As the air rises, it cools, causing the water vapor to condense and form clouds. As the clouds become thicker and more numerous, they can become heavy with water vapor and eventually rain. The lack of rainfall on day 2 could have been due to a lack of instability in the air parcel.
This could be due to a more even distribution of temperature, meaning warmer air higher in the atmosphere and cooler air closer to the ground, which would not create an updraft for the formation of clouds and rain.
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HELPPP PLEASEE!!!!!!!!!!!!!!!!!!!!!!!!
Transcribe the following DNA strand:
AAATACCCCGTAATGGCATAGGTCTGCACT
Answers
Answer:
Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). During the process of transcription, each nitrogenous base is connected with it's pair, (Guanine and Cytosine)
(Adenine and Thymine)
However one must remember that RNA contains uracil instead of Thymine. Therefore whenever there is supposed to be a "T" on the MRNA strand, there will be a "U"
AAAGTCGCTCTGAGTTGTTAT 21 Depositors primer
Explanation:
An analysis of a sample of urine, shows the presence of blood cells and glucose. Account for the presence of these substances in urine.
Answers
Answer:
It could mean that your kindneys arent filtering your blood properly
.pls help fast
Is the fossil record complete for humpback whales? Explain your answer.
Answers
Answer:
No, the fossil record is not complete because with further fossil discoveries, and more study, it may continue to tell paleontologists how modern whales came to behave the way they do.
Explanation:
The larger the coefficient of selection, the faster allele frequencies will change via natural selection.
True/False
Answers
The larger the coefficient of selection, the faster allele frequencies will change via natural selection. The statement is True.
The coefficient of selection (s) represents the strength of selection acting on a particular allele. It indicates the reduction in relative fitness of individuals carrying that allele compared to individuals without the allele. When the coefficient of selection is larger, it indicates stronger selection against the allele.
In natural selection, alleles that confer higher fitness are more likely to increase in frequency over time, while alleles with lower fitness are more likely to decrease in frequency or be eliminated from the population. The larger the coefficient of selection, the greater the difference in fitness between individuals with the allele and those without it, leading to a stronger selective pressure.
Therefore, a larger coefficient of selection accelerates the rate at which allele frequencies change through natural selection, making it more likely for the allele to either increase or decrease in frequency in the population over generations.
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_______ are surroundings with high levels of exposure to industrial chemicals.
a. second-growth forests
b. point sources
c. old growth forests
d. rangelands
e. toxic environments
i’m leaning towards e but could use some help figuring this out :)
Answers
Answer:
E
Explanation:
Looked up all the other ones and they didn't quite match as much as e
If energy is not being used to transport the oxygen particles into the cell, what type of membrane transport is most likely taking place by a carrier protein?
A. osmosis
B. simple diffusion
C. active transport
D. facilitated diffusion
Answers
The type of transport which is most likely taking place by a carrier protein is called the facilitated diffusion.
What is facilitated diffusion?Facilitated diffusion or passive transport involves a substance diffusing down a concentration gradient across a membrane without requiring the cell to expend any energy.
A concentration gradient is simply a region of space where the concentration of a substance changes, and substances will naturally move down gradients, from a higher concentration area to a lower concentration area.
Some molecules, such as carbon dioxide and oxygen, can diffuse directly across the plasma membrane, but others require assistance to cross its hydrophobic core. Molecular diffusion occurs when molecules diffuse across the plasma membrane with the help of membrane proteins such as channels and carriers.
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is measured from the outer shoulder socket on outside of arm to crook of elbow
Answers
Answer:
upper arm is the answer. is it right
Suppose you are on a ship near the equator in the Atlantic ocean you notice that the barometric (air ) pressure is dropping what type of weather might you soon experience
Answers
Answer: You might experience cold/winter weather because
Explanation: Atlantic ocean is pretty cold and as cold air rise up in the air making the atmospher kinda cold even when its near the equator.... because you are on a ship and you will only feel cold weather.
Example of healthy and non healthy fat
Answers
Non healthy: fried foods, donuts, chip
Healthy: nuts, avocados, olive
Non healthy: fried foods, donuts, chip
for solutes that move by simple diffusion, which of the following does not affect the rate of simple diffusion across a membrane? check all that apply. for solutes that move by simple diffusion, which of the following does not affect the rate of simple diffusion across a membrane?check all that apply. the membrane pore size the concentration of the solute the size of the solute the potential energy of the solute
Answers
The potential energy of the solute is the only variable that has no bearing on the rate of simple diffusion through a membrane. Here option D is the correct answer.
Simple diffusion is a passive process by which solutes move from an area of higher concentration to an area of lower concentration, driven by the concentration gradient. The rate of simple diffusion is influenced by various factors, but the potential energy of the solute itself does not directly affect this process.
The membrane pore size (option A) plays a crucial role in determining which solutes can pass through the membrane. Smaller solutes can diffuse more easily through smaller pores, while larger solutes may be hindered or even prevented from diffusing across the membrane.
The concentration of the solute (option B) directly affects the rate of diffusion. A greater concentration gradient results in a faster diffusion rate, as there is a steeper difference in solute concentration between the two sides of the membrane.
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Complete question:
Which of the following factors does not affect the rate of simple diffusion across a membrane? Select all that apply.
A) The membrane pore size
B) The concentration of the solute
C) The size of the solute
D) The potential energy of the solute
The act of keeping constant environment
Answers
Answer:
Homeostasis
Explanation:
Homeostasis.
Homeostasis is the maintenance of a stable internal environment.
at the turn of the century, among the sources of energy that are not fossil fuels, which energy source was consumed the most in the world?
Answers
At the turn of the century (around the year 2000), the energy source that was consumed the most among the non-fossil fuel sources was hydropower.
Hydropower is a form of renewable energy that generates electricity by using the energy of flowing water. It was the most widely used non-fossil fuel energy source at the turn of the century, as it was well-established and had a significant share in the global energy mix. Other non-fossil fuel sources like solar, wind, and nuclear energy were still growing and not yet as widespread as hydropower at that time.
This form of energy is generated by using the power of water to turn turbines and generate electricity. The explanation behind its popularity is that hydroelectric power is a renewable and clean source of energy that does not produce greenhouse gas emissions or air pollutants.
Additionally, many countries have large rivers and waterfalls that are suitable for hydroelectric power generation, which makes it a readily available energy source.
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What is the process called when the earth surface is broken down into smaller pieces
Answers
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion
Explanation:
How does setting daily goals in a behavioral self-management program help maximize the effects of reinforcement?
Answers
Setting daily goals in a behavioral self-management program helps maximize the effects of reinforcement by providing a clear and specific target for the individual to work towards.
What is Goal setting?
Goal setting is the development of an action plan designed in order to motivate and guide a person or organization toward a goal.
This allows the individual to track their progress and see the direct effects of their efforts.
Additionally, having daily goals can increase motivation and accountability, which can lead to a higher likelihood of achieving the desired behavior.
However, setting daily goals is an important aspect of a behavioral self-management program as it helps to maximize the effects of reinforcement and promote success.
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Please Help 100 Points! A DNA molecule is found to contain 40% of the nitrogenous base thymine(T). What percent of Nitrtogenous base adenine(A) does this molecule contain?
A. 20% C. 60%
B.40% D.80%
Answers
D. 80%
The benificial mutrients help in evolution . why?
Answers
Answer:
Well, nutrients can help give you protein and vitamins, So you can do your daily things like walking, running, or doing what you are doing right now typing on your computer.
Explanation:
A. Identify both the cellular component and the location of the component that is responsible for producing the luciferase protein from mRNAs transcribed in the plasmid-containing T lymphocytes. Explain what dictates to the lymphocytes the correct order in which amino acids should be linked to form the luciferase protein.
B. Identify the independent variable in the experiment described. Identify the plasmid that was used as a negative control for luciferase activity. Justify including the plasmid with the non- CD3γ active promoter in the experiments.
C. Identify the plasmid that must contain the CD3γ core promoter sequence but the fewest or no negative regulatory sequences. Based on the data in Figure 2, describe the most likely cause of the variation in luciferase activity among the cells that contain plasmids pCD3γ-419 , pCD3γ-309 , pCD3γ-239 , and pCD3γ-199. Calculate the approximate percent increase in luciferase activity between cells containing plasmid pCD3γ-59 and cells containing plasmid pCD3γ-149. Round to the nearest whole number
Answers
A. The cellular component that is responsible for producing the luciferase protein from mRNAs transcribed in the plasmid-containing T lymphocytes is ribosomes, which are found on the rough endoplasmic reticulum (RER) or free floating in the cytosol.
The correct order in which amino acids should be linked to form the luciferase protein is dictated by the genetic code. B. The independent variable in the experiment described is the type of promoter contained in the plasmid. The plasmid that was used as a negative control for luciferase activity is pGL3-Basic. The plasmid with the non-CD3γ active promoter was included in the experiments as a control to see if it caused any changes in luciferase activity. C.
The plasmid that must contain the CD3γ core promoter sequence but the fewest or no negative regulatory sequences is pCD3γ-59. The most likely cause of the variation in luciferase activity among the cells that contain plasmids pCD3γ-419, pCD3γ-309, pCD3γ-239, and pCD3γ-199 is due to the number of negative regulatory sequences in each plasmid, which affect the level of luciferase expression. The approximate percent increase in luciferase activity between cells containing plasmid pCD3γ-59 and cells containing plasmid pCD3γ-149 is more than 100%. (178-65)/65 x 100 = 173% (rounded to the nearest whole number).
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Summarize the mRNA translation process in eukaryotes.
Answers
Answer:
During protein synthesis, the sequence of a messenger RNA (mRNA) molecule is translated into a sequence of amino acids. After the transcription of DNA to RNA, ribosomes in the cytoplasm or the endoplasmic reticulum (ER) create proteins.
OAmalOHopeO
What would be happened if the light emitted in the flame test were passed through a prism?
Answers
We have mentioned how atoms and molecules can absorb photons, thereby ... case of what happens when a hydrogen atom absorbs light in the visible or UV region of ... Thus, by examining the colors of light emitted by a particular atom, we can ... In the lab, we can often distinguish between elements by using a flame test.
Rainbows are created when sunlight passes through rain drops that act as ... the atoms and molecules are emitting energy in the form of visible light. ... Part One: Flame Tests (As an option, this could be a demo rather than a student activity).
Researchers have been studying the evolution of bighorn sheep in response to trophy hunting at Ram Mountain, Canada, since 1973. This population was intensively hunted until 1996, when hunting regulations increased the minimum size of the horns of rams (males) that could be shot, after which the number of rams killed by hunters each year decreased dramatically. More recently, researchers observed that, in response to the selective pressure imposed by the hunters, the average horn length of rams decreased by almost 30% between 1973 and 1996. After hunting pressure decreased in 1996, horn length rebounded, increasing by about 13%. Which evolutionary mechanism likely underlies born length in the bighorn sheep population? O genetic drift natural selection speciation inbreeding
Answers
The evolutionary mechanism that likely underlies horn length in the bighorn sheep population at Ram Mountain, Canada is natural selection.
Researchers observed a significant decrease in average horn length of rams between 1973 and 1996, which coincided with intense trophy hunting. This suggests that hunters were selectively targeting rams with larger horns, leading to a decrease in the average horn length over time. However, after hunting regulations were implemented in 1996, which increased the minimum horn size for hunting, the number of rams killed decreased, allowing individuals with longer horns to survive and reproduce. This resulted in a rebound in horn length, indicating that natural selection favored individuals with longer horns.
Natural selection is a fundamental mechanism of evolution that acts on heritable traits within a population. In this case, the selective pressure imposed by trophy hunting exerted a strong influence on horn length in bighorn sheep. The initial decrease in average horn length can be attributed to selective hunting of rams with larger horns, as those individuals were more likely to be targeted and killed by hunters. This artificial selection altered the genetic composition of the population, favoring individuals with shorter horns.
However, when hunting regulations were modified to protect rams with shorter horns, the selective pressure was alleviated, allowing individuals with longer horns to have higher reproductive success. Over time, this led to an increase in average horn length as the genetic trait for longer horns became more prevalent in the population.
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A fish farmer has a large pool used to grow a species of fish. The farmer decides to add a second species of fish to the pool. Both fish species feed on the same type of food, but the fish farmer does not increase the amount of food added to the pool, maintaining the same carrying capacity in the pool.
Which graph shows how the population of the two fish species will change?
Answers
Answer:
D
Explanation:
Explanation: The capacity of fish to the ratio of population change increased and showed a variable degree of measurements.
Cells have many small objects called (4) _____ that perform specific functions for the cell. Some are found in plant cells, but not animal cells. One example is the (5)_____, which provides support and forms an extra barrier outside of the cell membrane. The (6)_____ contains chlorophyll, which is necessary for a plant cell to produce energy through (7)_____. Plant cells also include a large central (8)_____, which store food, water, and waste. Word bank: organelle, photosynthesis, chloroplast, cell wall, vacuole.
Answers
Answer:
(4) Organelle
(5) Cell Wall
(6) Chloroplast
(7) Photosynthesis
(8) Vacuole
Explanation:
I'm in middle school and i do the same stuff u do :D
Which of the following is NOT one of the 3 major areas of society affected by science?
Answers
1. write about the natural resources of ethiopia and why we need to take of them
Amino acids share a chemical backbone of?
Carbon, hydrogen and oxygen
Carbon and hydrogen
Hydrogen and nitrogen
Carbon, hydrogen, nitrogen and oxygen
Answers
Answer:
carbon, hydrogen, nitrogen and oxygen
Explanation:
mostly, combination of carboxylic and amine groups
All amino acids share a chemical backbone of carbon, hydrogen, nitrogen, and oxygen.
Nutrient elements such as carbon, hydrogen, and oxygen form the backbone of all biomolecules of life.
Carbohydrates contain carbon, oxygen, and hydrogen only.
Amino acids are the building blocks of proteins and they generally contain carbon, hydrogen, oxygen, and nitrogen. Other elements found in some amino acids include sulfur and phosphorus.
Nucleic acids contain nitrogenous bases, phosphorus, pentose sugar (CHO).
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marks the end of a gene and causes transcription to stop. group of answer choices a.methionine b.a terminator
c. rna ligase d.rna polymerase
Answers
The terminator (option b) marks the end of a gene and causes transcription to stop.
The terminator is a sequence of DNA that signals the end of a gene and causes transcription to stop.
It is located downstream from the coding region of a gene and is recognized by the RNA polymerase enzyme, which then dissociates from the DNA template and releases the newly synthesized RNA molecule.
The terminator sequence includes a specific set of nucleotides that create a hairpin loop structure in the RNA transcript, which disrupts the RNA polymerase complex and prevents it from continuing to elongate the RNA chain.
This process is essential for the proper regulation of gene expression and ensures that the correct amount of RNA is produced in response to cellular signals.
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The term that marks the end of a gene and causes transcription to stop is a terminator.
Terminators are DNA sequences that mark the end of a gene and cause transcription to stop. During transcription, RNA polymerase reads the DNA template strand and produces an RNA transcript. The terminator sequence signals to the RNA polymerase to stop adding nucleotides to the RNA chain and to release the RNA transcript. The RNA transcript is then modified by various enzymes to produce a mature mRNA molecule, which is then translated into protein. Methionine is an amino acid that is used as the start codon for protein synthesis, while RNA ligase is an enzyme that is involved in RNA processing and repair. RNA polymerase is the enzyme responsible for catalyzing the synthesis of RNA from a DNA template during transcription.
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