1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
larisa [96]
3 years ago
11

Action potential propagation in a skeletal muscle fiber ceases when acetylcholine is removed from the synaptic cleft. Which of t

he following mechanisms ensures a rapid and efficient removal of acetylcholine?a) Acetylcholine is degraded by acetylcholinesterase.b) Acetylcholine is transported back into the axon terminal by a reuptake mechanism.c) Acetylcholine is transported into the postsynaptic neuron by receptor-mediated endocytosis.d) Acetylcholine diffuses away from the cleft.
Biology
1 answer:
klasskru [66]3 years ago
6 0

Answer:

a) Acetylcholine is degraded by acetylcholinesterase.

Explanation:

After it binds for its receptor on the plasma membrane of the postsynaptic cell, acetylcholine must be removed in order to prevent repeated stimulation. Acetylcholinesterase is enzyme for the inactivation of acetylcholine, present at all cholinergic synapses. This enzyme hydrolyses acetylcholine and breaks it to the acetate and choline. Choline can be reused for the synthesis of the new acetylcholine molecule so it is taken back into the presynaptic cell.

You might be interested in
After researching the possible effects of music, Elaina proposes that if people listen to faster-paced music, their pulse rates
Angelina_Jolie [31]

Answer:

Constant variables

Explanation:

Elaina's investigation lacked the critical ingredient of constant variables which are important components of every scientific investigation. In every research, there are 3 important variables, namely:

1. Dependent variables: the actual variable to be measured during the course of investigations and whose values are dependent on another variable (independent variable) supplied by the investigators.

2. Independent variable: one of the variables that are supplied by investigators whose values are often manipulated to see the kind of changes it will cause to the dependent variable.

3. Constant variables: other variables that are neither independent nor dependent but constant for all the various experimental groups in investigations.

5 0
2 years ago
Which of the following is important in accumulating and removing sand that result in shifting barrier islands?
elena55 [62]

Answer:

D. Longshore currents

Explanation:

Longshore currents are characterized as the sediment transport that occurs in the surf zone, due to the oblique incidence of the waves, along the beach. A current develops between the beach and the surf zone parallel to the coast, normally between 0.3 and 1 m / s. It is this process that is responsible for accumulating and removing sand that results in displacement of barrier islands.

5 0
3 years ago
If a ship is sailing on an ocean and it is 2:00pm at the prime meridian and 10:00 am on the ship what is the longitudinal locati
bonufazy [111]

Answer:

The longitude of the location of the ship is W

Explanation:

Here we have the time at the prime meridian as 2 pm while the time at the ship is 10 am. What this means is that the prime meridian is 4 hours ahead of the time of the location of the ship. Geographically, whenever a location is east of the prime meridian, it is ahead of the prime.

3 0
2 years ago
In an important experiment, a radioactively labeled bacteriophage was allowed to infect bacteria. In a first trial, the phage co
aliya0001 [1]

Answer: C) the genes of this phage were made of DNA.

Explanation: the experiment described above wherein a radioactively labeled bacteriophage was allowed to infect bacteria ultimately led to the conclusion that the genes of the bacteriophage under study were made of DNA (a biopolymer of deoxyribonucleic acid, which is a type of nucleic acid composed of four different chemical groups, called bases: adenine, guanine, cytosine and thymine). Simply put, the experiment shows that the genetic material of the phage is DNA.

3 0
2 years ago
Which term refers to the diffusion of water molecules through a selectively permeable membrane?
raketka [301]
The answer is osmosis 

Hope this helps
7 0
3 years ago
Other questions:
  • How many fundamental forces exist in nature?
    5·2 answers
  • Most likely, a woman who desires to terminate her pregnancy at the eighth week will undergo a culpotomy. vacuum aspiration. dila
    7·2 answers
  • The offspring of two parents obtains a single copy of every gene from each parent. T/F?
    6·1 answer
  • When does recycling happen in the mineral resource cycle?
    15·2 answers
  • Which statements describe a mushroom’s niche? Check all that apply.
    5·2 answers
  • Hbbggggg Yung dnrgjg fhbsetjbdd
    9·2 answers
  • What information did gregor mendel know before he started his experiments?
    13·1 answer
  • Positive feedback
    5·1 answer
  • 6. Plant cells use sunlight to make their own food. Which structure allows plant cells to perform
    5·1 answer
  • What is the outer layer of earth called​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!