Answer:
is A.
Explanation:
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated Na+ channels. Na+ ions enter the cell, further depolarizing the presynaptic membrane. ... Fusion of a vesicle with the presynaptic membrane causes neurotransmitters to be released into the synaptic cleft.
Answer:
The correct option is: a. glycogen, starch, and amylopectin
Explanation:
Glycogen, amylopectin and starch are the polysaccharides of glucose. These polymers are composed of monomeric α-glucose units, which are joined by α(1→4) glycosidic bonds.
Since, the amylase enzyme can act only on the glycosidic bonds formed between α-glucose monomers. Therefore, amylase can break down glycogen, starch, and amylopectin.
I feel the answer is cell membrane .
The cell membrane is a semipermeable protection and covering for the cell.
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