Multiple Choice
In mature mammalian red blood cells (erythrocytes), which organelle is absent to maximize space for hemoglobin and improve oxygen transport?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
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In eukaryotic cell architecture, what is the primary function of the cell wall in organisms such as plants and fungi?
A
It serves as the main site of ATP production through oxidative phosphorylation.
B
It selectively regulates the passage of ions and small molecules into and out of the cell.
C
It packages and sorts proteins for secretion via vesicular transport.
D
It provides structural support and protection, helping maintain cell shape and resist osmotic swelling.
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