Answer:
A
Explanation:
by definition, cell membrane receptor are specialized membrane proteins, allowing communication between the cell and the extracellular space.
The mutations may be a
substitution, deletion, inversion, or addition.
The mutations in insulin may alter its active sites responsible
for receptor binding, or the time taken for the insulin
to be degraded (half-life). Mutation on insulin may cause diseases such as hyperproinsulinemia
or hyperinsulinemia.
Cellulose is the primary source of a cell wall which means that it doesn't come from animal sources
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