Multiple Choice
In a eukaryotic cell, which organelle is primarily responsible for pumping out excess water to maintain osmotic balance (especially in freshwater protists)?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
Multiple Choice
In eukaryotic cell architecture, which organelle is considered the cell’s primary control center because it houses most of the genetic material and regulates gene expression?
A
Ribosome
B
Nucleus
C
Golgi apparatus
D
Mitochondrion
Verified step by step guidance1
Identify the organelle responsible for housing the cell's genetic material, which is DNA. This organelle contains the chromosomes that carry genes.
Understand that the organelle which regulates gene expression controls which genes are turned on or off, influencing cell function and activity.
Recall that the nucleus is the organelle that contains most of the cell's DNA and is involved in regulating gene expression through processes like transcription.
Compare the functions of the other organelles listed: ribosomes synthesize proteins, Golgi apparatus modifies and packages proteins, and mitochondria generate energy.
Conclude that the nucleus is considered the cell's primary control center because it houses genetic material and regulates gene expression.
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