MCAT Biology 1.3 Questions and
Answers | Latest Update | 2024/2025 |
100% Verified
What is the primary function of the rough endoplasmic reticulum?
The rough endoplasmic reticulum is involved in the synthesis and modification of proteins,
as it is studded with ribosomes that translate mR...
cells by exchanging intracellular calcium for extracellular sodium, influencing heart contraction.
What is the function of the primary cilium in cell signaling?
✔✔The primary cilium acts as a sensory organelle that detects and responds to environmental
signals, playing a role in various cellular processes including signaling and development.
How does DNA methylation affect gene expression?
✔✔DNA methylation typically represses gene expression by adding methyl groups to cytosine
residues in DNA, which can prevent transcription factors from accessing the gene.
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