The complete question is :
Which of the following best describes how ACh changes the ion permeability of the sarcolemma?
A) ACh activates acetylcholinesterase.
B) ACh entry into the axon terminal causes neurotransmitter release.
C) ACh binds to receptors in the junctional folds.
D) ACh entry into the muscle fiber causes Ca2+ to be released by the sarcoplasmic reticulum.
Answer:
C) ACh binds to receptors in the junctional folds.
Explanation:
Sarcolemma is the term used for the cell membrane of the skeleton muscle fiber cell.
At the motor end plate, there are several folds present in the sarcolemma that are known as junctional folds.
These junctional folds have several acetylcholine (Ach) receptors present on them and these are ion channels that are chemically gated.
These ion channels open upon binding of Ach and thus, the ions can diffuse into the sarcolemma.
Thus, the binding of Ach on the receptors located in the junctional folds increases the ion permeabiltity of the sarcolemma.
Answer:
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I believe the answer you are looking for is secondary regrowth. Hope this helps
The process that is responsible for the production of glucose in plants is photosynthesis.
<h3>What is photosynthesis?</h3>
Photosynthesis is a chemical process in which organic matter is formed from inorganic matter thanks to <em>sunlight</em>, this is a process given in autotrophic organisms which are <u>capable of synthesizing their own food</u> through this process.
What happens is that thanks to sunlight, molecules are formed that contain high levels of energy (ATP and NADPH), these molecules are used for the synthesis of carbohydrates that are used to feed the cell.
Therefore, we can confirm that the process that is responsible for the production of glucose in plants is photosynthesis.
To learn more about photosynthesis visit: brainly.com/question/1388366?referrer=searchResults
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Answer:
4 reasons here:
Explanation:
1) Adventure; boredom causes them to look for excitement, even if it's detrimental to their health.
2) Peer pressure;research shows that risk-taking among teens doubles when peers are around.
3) media;easy to guess, shows a lot of risky behaviour in glamorous or admirable ways.
4) Poor self-esteem; bullying can lead to poor self-esteem and higher chance of the victim becoming depressed and taking substance to cope with the depression, also leads to err, self-death