A U G C G C A U U A G U G C A G G A C A G U A G
A hypothesis is a question that can be answered through an experiment. A theory is a sort of assumption that can't exactly be proved
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:
It will gain water and may burst
Explanation:
It is due to increase in the amount of water in the cell which exerts high pressure on the the cell membrane.
Alright, here's everything I can do for you:
Name (top to bottom): Protons, neutrons, electrons
Location (top to bottom): Inside the nucleus, inside the nucleus, outside the nucleus
Electrical charge (top to bottom): positive, neutral, negative.
