Answer:
the sperm fertilizing the egg
Explanation:
Capillaries are one cell thick and so this makes them very thin. capillaries are also arranged in networks known as capillary beds, and thus multiple capillaries are spread over a large area.
Answer:
RNA polymerase
Explanation:
RNA polymerase, an enzyme in the cell, is responsible for creating mRNA from the correct gene.
Correct answer. No definite shape.
The organelle you would expect to be especially numerous in the heart muscle cells are called- Mitochondria.
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