You experimentally apply a toxin to a muscle and find that it does not contract when you electrically stimulate the motor neuron leading to it. You know that this toxin blocks acetylcholine receptors. Therefore, you suspect that the stimulation of contraction is failing because: Group of answer choices

Answers

Answer 1

The question provided is not complete as it lacks the group of choices, however the group of choices are given as follows:

A. A contraction fails to occur because an action potential is not generated in the muscle cell.

B. A contraction fails to occur because this toxin directly prevents ion release from intracellular stores.

C. A contraction fails to occur because neurotransmitter release by the motor neuron is blocked at the neuromuscular junction.

D. A contraction fails to occur because this toxin prevents cross bridge formation and thereby directly prevents contraction.

E. C and D are both true

Answer:

The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.

Explanation:

A muscle contraction takes place when action potential bring to muscles by nerves, which is traveled with the help of motor neuron and imitated the muscle contraction.

Acetylcholine or Ach is a chemical messenger to bring the nerve impulses between a nerve and a muscle. If the receptor is block with applying toxin muscle will not contract as ACh will not be able to propagate the nerve impulse to the muscle so there will be no action potential.

The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.


Related Questions

Why was the Nationalist Party more popular in China’s cities than in the countryside? Wealthy people who supported the party were concentrated in cities. People in the countryside were less active in politics than people in the city. Poor city dwellers hoped the Nationalist Party would bring economic change. The Nationalist Party threatened to end crop trade with Western nations.

Answers

Answer:

Wealthy people who supported the party were concentrated in cities.

Explanation:

Answer:

The answer is A on edge

Explanation:

How is genetic information preserved during the copying of DNA? View Available Hint(s) Hint 1.opened hint How is genetic information preserved during the copying of DNA? The information is preserved because DNA codes for RNA, which codes for protein. Genetic information is preserved in the linear sequence of the building blocks A, T, G, and C. Genetic information is preserved by base pairing between A and T and between G and C across the two strands of the double helix. The information in DNA is copied into RNA, which is used as a template to copy back to DNA.

Answers

Answer:

Genetic information is preserved in the linear sequence of the building blocks A, T, G, and C.

Explanation:

Deoxyribonucleic acid contains genetic information in the bases i.e the Nitrogenous bases Adenine, thymine, Guanine, cytosine are the store for coding genetic information, in them lies the genetic information of an organism. Each base is coding for different gene the is found in the organism.

After the information on the DNA have been moved to an intermediary Ribonucleic acid (RNA) it is been translated into an amino acid a building block of protein containing all the genetic information coded for by the Nitrogenous base.

How is multi cellularity advantages over increasing the mass of a single cell

Answers

Answer:

Multicellular organisms

hoped i helped

Abnormal vascular regulation by endothelial cells in small vessels of the heart contributes to:___________. a. Hypertension b. Dysrhythmias c. Truncus arteriosus d. Ischemic heart disease

Answers

Answer: The correct answer to the question is option D

ISCHEMIC HEART DISEASE.

Explanation: To answer the question effectively, let us look at the options given,what they are and how they affect the heart.

Endothelial cells play a crucial role in the regulating vascular tone,They do so by secreting variable amounts of constricting and relaxing factors inorder to control tissue perfusion.

Hypertension on the other hand occurs as a result of factors that varies distinctively and not all related to vascular tone.

Dysrhythmias on it's own will affect the function and conduction of heart chambers but not necessarily vascular tones.

Truncus arteriosus results in only in one large artery exiting/leaving the heart.

what is difference between pressure exerted by liquid than by a solid​

Answers

pressure of solids occurs only due to the weight of the solid, whereas pressure of liquid occurs due to both weight and movement of the liquid molecules

why the women have big hips?

Answers

Answer:

Explanation:

During adoloscence, many changes occur in boys as well as girls.

Growing of the hip region is one of the changes in women.

Hope this helps

plz mark as brainliest!!!!!!!!!

As a girl i think its more like genetics. Or sometimes after giving birth i think that you hips can get bigger. All bodies are different some women have different hips. I hope this help :)

The immune response of a host against an invading bacterium is often triggered by surface components on the bacterium that are recognized as "non-self" or "foreign" by the host. These non-self components, often protein or polysaccharide in nature, are referred to as antigens. The host responds to these antigens by making antibodies that will react with invading bacteria and mark them or tag them for destruction by phagocytes.

Indicate the bacterial structures that are likely to be antigens, to which host antibodies bind, marking the invader for phagocytosis

a. fimbriae
b. ribosomes
c. cell wall
d. plasmids
e. flagella
f. capsule
g. nucleoid

Answers

Answer:

The correct answer is :

a. fimbriae

e. flagella

c. cell wall

f. capsule

Explanation:

There are several bacterial structures that are binds to the host cells and likely to be antigens to which specific antibodies attached to mark or destruct them by phagocytes.

These bacterial structures are common in the fact that all these structures have binding ability to the host cells and invading them some of these structures are : fimbriae, cell wall, flagella, and capsule that are attached to antibodies and cell of the host.

Thus, the correct answer is :

a. fimbriae

e. flagella

c. cell wall

f. capsule

1. White blood cells attack what??
2. Ability of an organism to feed is called
a nutrition 6 irritability cd growth ad movement
3. The following are types of living things
except
Polista
d) lysosomea
4. Another name for Aues is called a hea
6) birds cd mamals d)
frog
animals are herbivores except
goats giraffes Selephants
d leopardo
5. The following
6. The locomotany organ of earthwor mis a) fors
Dwings as muscles D tube feet.
Sol
7. Spider use for respiration ad lungs b) booklungs
c) gills d) lenticels
The top of the tongue is responsible for a
bitterness c) Saltiness d) sourness.
these is not
organ
b) cose c) Tongue ad liver
9. One of
sense o
a) Eye​

Answers

Answer:

white blood cell's fight infections from bacteria, viruses, fungi, and other pathogens

Explanation:

This mammal retains its embryo in its uterus for the full term of the pregnancy. Which mammal is it most likely to be?

Answers

Answer:

The mammal that retains its embryo in its uterus for the full term of the pregnancy is the bat. A koala and the kangaroo both carry their babies to term in pouches.

Explanation:

Reproductive mother cell
2n
2n
Meiosis
Meiosis
Ovum
n
n
Sperm
Fertilization
2n
Zygote​

Answers

Answer:

what we should do in this???

1. This phylogenetic tree was constructed by comparing sequences for a homologous gene involved in development. Select the correct statement.
A. A phylogenetic tree containing two main branches for evolutionary relationships among the animals.
B. The first branch leads to Drosophila.
C. The second branch divides into two branches, 2a and 2b. Branch 2a leads to Lancelet.
D. Branch 2b divides into two branches: 3a and 3b. Branch 3a leads to Zebrafish.
E. Branch 3b divides into two branches: 4a and 4b. Branch 4a leads to Frog.
F. Branch 4b divides into two branches: 5a and 5b. Branch 5a leads to Chicken.
G. Branch 5b divides into two branches leading to Human and Mouse, respectively.
2. This phylogenetic tree was constructed by comparing sequences for a homologous gene involved in development. Select the correct statement.
A. The common ancestor of a human and a frog and the common ancestor of a mouse and a chicken lived at the same time.
B. The nucleotide sequence of this gene in a mouse is more similar to the sequence in a chicken, and both are less similar to the nucleotide sequence of this gene in a frog.
C. A frog is the ancestor of both a mouse and a chicken.

Answers

The figure shows a tree diagram with two main branches. The first branch leads to Drosophila. The second branch divides into two branches 3a and 3b. Branch 3a leads to Lancelet. Branch 3b divides into two branches: 4a and 4b. Branch 4a leads to Zebrafish. Branch 4b divides into two branches: 5a and 5b. Branch 5a leads to Frog. Branch 5b divides into two branches: 6a and 6b. Branch 6a leads to Chicken. Branch 6b divides into two branches leading to Human and Mouse, respectively.

This phylogenetic tree was constructed by comparing sequences for a homologous gene involved in development. Select the correct statement.

The nucleotide sequence of this gene in a mouse is more similar to the sequence in a chicken, and both are less similar to the nucleotide sequence of this gene in a frog.

A frog is the ancestor of both a mouse and a chicken.

The common ancestor of a human and a frog and the common ancestor of a mouse and a chicken lived at the same time.

Answer:

The answer is below

Explanation:

Given the information above, and from the available pictures which showed the detailed analysis of the information presented in the question. It can be concluded that, the nucleotide sequence of this gene in a mouse is more similar to the sequence in a chicken, and both are less similar to the nucleotide sequence of this gene in a frog.

Hence, the right answer is option B.

The hydrogen atom has one _____ and one _____.

Answers

Answer:

The hydrogen atom has one proton and one electron.

Answer: the h2 atom has one electron and one proton.

E = p^+

Just keep in mind that electrons ar always equal to the protons. so you don’t have to worry !

Which of the following is an organic molecule?

Answers

Answer:

glucose, water is found organisms but mixed with other substances

why do solids have a fixed shape

Answers

Answer: solids have fixed shape because they are rigid and is high dense. The particles are way too close to each other that even force applied to it doesn’t change it shape

what has a greater influence on protien levels

Answers

Question is incomplete, The complete question is as follows:

What has a greater influence on protein levels?

A. Protein degradation has a greater influence because they are denatured faster than the cell can produce them

B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced

C. mRNA destroyer concentration has a greater influence because mRNA is destroyed right after the proteins are produced

D. Protein degradation has a greater influence because outside factors like antibiotics can cause it, and it is difficult to recover from

Answer:

B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced  

Explanation:

mRNA destroyer concentration has a greater influence on protein levels because mRNA destroyers abort the mRNA as soon as the enough mRNA are produced before formation of proteins.

mRNA destroyer follow the mRNA around itself and dragged it once mRNA is picked for protein synthesis.

Hence, the correct answer is "B".

What molecule is required each time the myosin head detaaches from one site and reattaches to another

Answers

Answer:

The adenosine triphosphate (ATP) molecule

Explanation:

The actin filaments are often associated with myosin to produce muscle contraction. These myosin filaments are considered to be 'molecular motors' capable of converting the chemical energy contained in the ATP molecule to mechanical energy, thereby producing cell movement. Myosin heads bind to actin filaments in order to generate a power stroke. When the adenosine triphosphate (ATP) molecule binds to myosin, the myosin head detaches to the actin filament. During this process, the ATP molecule is broken down and then the released energy is used by the myosin filament to return to its original position.

Always use the gross adjustment knob before using the fine adjustment knob when focusing on the microscope 1 2 False True​

Answers

It should be true, because youre supposed to adjust the larger one before adjusting the finer one

ANSWER ASAP PLEASEEEEEE!!!!!! ILL GIVE 100 POINTS!!

Answers

Answer:

d

Explanation:

Answer: D, I believe.

Explanation:

Which of the following is the best definition of alternative energy? A. Energy sources that can be used in place of fossil fuels. B. Energy sources that can be used in place of coal. C. Energy sources that can be used in place of wind energy. D. Energy sources that can be used in place of hydroelectric energy.

Answers

Answer:

My answer is D.

Energy sources that can be used i. place of hydroelectric energy.

The best definition of alternative energy is energy that can be used in place of fossil fuels. The correct option is A.

What is alternative energy?

Alternative energy is that energies are used in the place of the conventional form of energy. These energies are renewable and eco-friendly.

The burning of coal and fossil fuel produces lots of greenhouse gases, so the best alternative energy is the one that replaces it.

Thus, the correct option is A. Energy sources can be used in place of fossil fuels.

Learn more about alternative energy, here:

https://brainly.com/question/932825

#SPJ5

can a steam cell taken from a baby, and giving the cell all that needs, can make clone

Answers

Answer:

i think so

Explanation:

Clones contain identical sets of genetic material in the nucleus—the compartment that contains the chromosomes—of every cell in their bodies. Thus, cells from two clones have the same DNA and the same genes in their nuclei.

Match the current applications to the appropriate branch of genetics. Not all applications will be placed.

a. Hereditary genetics
b. Population genetics
c. Molecular genetics

1. Observing phenotypes in offspring to understand gene inheritance.
2. Tracing pedigrees to determine patterns of gene transmission within a family.
3. Calculating allele frequencies to determine changes within gene pools.
4. Expressing exogenous transgenes to understand function.
5. Identifying gene mutations associated with a genetic disease.

Answers

Answer:

a. Hereditary genetics = 1 and 2

b. Population genetics = 3

c. Molecular genetics = 4 and 5

Explanation:

Genetics is a discipline that studies the transmission of heritable traits from parents to offspring. Population genetics is a discipline that analyzes genetic and allele frequencies in natural populations, as well as their changes in evolutionary processes. Finally, molecular genetics is a research field that studies the structure of the DNA molecule, its replication and the development of genetic engineering technologies associated with the manipulation of genetic information.

a. Hereditary genetics = 1 and 2

b. Population genetics = 3  

c. Molecular genetics = 4 and 5

The following information should be considered;

Genetics refers to a discipline that studies the conversion of heritable traits from parents to offspring. Population gen-etics should be the discipline that analyzes genetic and all-ele frequencies in a natural populations along with it their changes in evolutionary processes. So, molecular gen-etics means the research field that studies the DNA structure molecule, its replication and the development of gen-etic.

learn more: https://brainly.com/question/3617478?referrer=searchResults

What is it called when vesicles are used to move substances out of the cell ?
O A. Passive
O B. Endocytosis
O C. Diffusion
D. Exocytosis

Answers

Answer:

d

Explanation:

50 POINTS In your own words, describe the connection between the heat from earth’s core and the movement of tectonic plates.

Answers

Answer:

ert

Explanation:

Proton pumps embedded in the cell membrane use ATP to move hydrogen ions across the membrane. Which of the following best describes a function of the proton pump? A. It decreases the pH inside the cell to prevent toxicity. B. It generates a voltage across the membrane as a way to store energy. C. It helps maintain homeostasis by absorbing electrical charges. D. It increases the fluidity of the cell membrane as energy is used.

Answers

Answer for anyone who may still need it: B. It generates a voltage across the membrane as a way to store energy.

what is not a goal of science

Answers

Answer:

to goof around

Explanation:

Why is environmental science important?

Answers

Explanation:

it is where we live and share resources with order species

I hope this was helpful

which best describes bacterium?

Answers

Answer:

Bacteria (singular: bacterium) are classified as prokaryotes, which are single-celled organisms with a simple internal structure that lacks a nucleus, and contains DNA that either floats freely in a twisted, thread-like mass called the nucleoid, or in separate, circular pieces called plasmids. Hope this helps :))

Explanation:

Answer:

Bacteria are classified as prokaryotes, which are single-celled organisms with a simple internal structure that lacks a nucleus, and contains DNA that either floats freely in a twisted, thread-like mass called the nucleoid, or in separate, circular pieces called plasmids.

Explanation:

Which is a difference between a compound light microscope and a scanning electron microscope?

Answers

The scanning electron microscope can view the internal part of a cell, while the compound light microscope views the surface of a cell. ... The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.

Answer:

the answer is D not what other dude said

Explanation:

How do postprocessual archaeologists approach an artifact? A. They try to discover the time period the artifact came from. B. They seek to derive meaning from the artifact. C. They recreate the artifact in order to study it. D. They try to identify how the artifact has changed over time.

Answers

Answer:

c

Explanation:

c

Postprocessual archaeologists approach an artifact by the fact that they recreate the artifact in order to study it. Thus, the correct option for this question is C.

What is meant by Archaeologists?

Archaeologists may be defined as a type of person who significantly studies and modifies some sorts of the buildings, graves, tools, and other objects of people who lived in the past. They work basically on human history and prehistory through the uncovering of sites.

Postprocessual archaeologists determine the complete movement of the archaeological theory that basically emphasizes the theory that deals with the subjectivity of the interpretation that is made by other kinds of archaeological branches.

Therefore, postprocessual archaeologists approach an artifact by the fact that they recreate the artifact in order to study it. Thus, the correct option for this question is C.

To learn more about Archaeologists, refer to the link:

https://brainly.com/question/928273

#SPJ5

Is there just one universal scientific method?

Answers

Answer:

There is no such unique standard method—scientific progress requires many methods—but students in introductory science courses are taught that `The Scientific Method' is a straightforward procedure, involving testing hypotheses derived from theories in order to test those theories.

Explanation:

Other Questions
any know how to get rid if a blocked nose if blowing it isnt working Average Rate of ReturnDetermine the average rate of return for a project that is estimated to yield total income of $148,500 over five years, has a cost of $300,000, and has a $30,000 residual value.% did maRGIE HAVE regular days and hours Take thus quote, and embed (introduce) it into a complete sentence: "TV plotsand characters tended to be simple" The author is Ostergaard. Lyla walks three times per week for 45 minutes at a speed of 4.0 miles per hour. She wants to increase her time what should she do The ability of a multinational or global competitor to shift production from country to country to take advantage of exchange rate fluctuations, energy costs, wage rates, or changes in tariffs is an example of Multiple Choice cross-market subsidization. cross-market differences in cultural, demographic, and market conditions. an international strategic alliance. cross-border coordination. a profit sanctuary. Help please! If income rises from $1,000 to $1,400 and consumption rises from $800 to $1,168, the marginal propensity to consume is __________ percent. Gina, Sam, and Robby all rented movies from the same video store. They each rented some dramas, comedies, and documentaries. Gina rented 11 movies total. Sam rented twice as many dramas, three times as many comedies, and twice as many documentaries as Gina. He rented 27 movies total. If Robby rented 19 movies total with the same number of dramas, twice as many comedies, and twice as many documentaries as Gina, how many movies of each type did Gina rent? solve 1 for x if a=-9.8, v=2.7, and t= 35 A technical analyst has been charting the price movements of ABC stock. The stock has been fluctuating in price between $63 and $67 per share for the past 3 months. If the analyst expects a breakout through the support level, which order should be placed Question:A school's band members raised money by selling magazine subscriptions and shirts. Their profit from selling shirts was per shirt minus a one-time set-up fee. Their profit from selling magazine subscriptions was per subscription. They made exactly the same profit from shirts as they did from magazines. They also sold the same number of shirts as magazine subscriptions. How many shirts did they sell? Jamie has a jar of coins containing the same number of nickels, dimes and quarters. The total value of the coins in the jar is 13.20. How many nickels does Jamie have? The gasoline gauge on a van initially read full. When 15 gallons of gasoline were added to the tank, the gauge then read full. How many more gallons would be needed to fill the tank? A car travels 120m along a straight road that is inclined at 8 to the horizontal. Calculate the vertical distance through which the car rises. (Sin8=0.1392) what is the value of x ? What is the FIRST major step of the writing process? The data set {3, 7, 5, 4, 1} consists of the lengths, in minutes, of a sample of speeches at an awards banquet. Use a formula to find the standard deviation of the sample, and label it with the correct variable. 9) Selected information regarding a company's most recent quarter follows (all data in thousands). 9) _______ Direct labor $540 Beginning work in process inventory $330 Ending work in process inventory $420 Cost of goods manufactured $1620 Manufacturing overhead $830 What was the cost of direct materials used for the quarter These cones are similar. Find the volumeof the smaller cone. Round to thenearest tenth. Gabriel Industries stock has a beta of 1.12. The company just paid a dividend of $1.15, and the dividends are expected to grow at 4 percent. The expected return on the market is 11.4 percent, and Treasury bills are yielding 3.8 percent. The most recent stock price is $85. (a) Calculate the cost of equity using the dividend growth model method. (b) Calculate the cost of equity using the SML method. (c) Why do you think your estimates in (a) and (b) are so different? Please help and explain so I can understand for future questions