5 points Transmembrane proteins span the width of the cell membranes. Four types of transmembrane proteins are shown in a section of cell membrane.
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Although these proteins have different specific functions, they all-
A-stop chemical reactions within the cell

B-synthesize molecules that signal other cells

C- help the cell interact with its external environment

D- remove large waste particles from the cytoplasm of the cell

C. help the cell interact with its external environment

Explanation:

A transmembrane protein (TP) is a type of integral membrane protein that spans the entirety of the cell membrane. Many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane.

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explanation:

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b