One of the Disadvantages of the C₄ Pathway Is That

question 28

Multiple Choice

One of the disadvantages of the C₄ pathway is that it requires

• A)more O₂.
• B)more NADPH.
• C)more light.
• D)more ATP.
• E)a much higher temperature.

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Definitions:

Sodium/Potassium Pump

A membrane protein that moves sodium ions out of cells and potassium ions into cells against their concentration gradients, essential for cellular function.

Pinocytosis

Process by which vesicle formation brings macromolecules into the cell.

Exocytosis

Process in which an intracellular vesicle fuses with the plasma membrane so that the vesicle’s contents are released outside the cell.

Endocytosis

Process by which substances are moved into the cell from the environment; includes phagocytosis, pinocytosis, and receptor-mediated endocytosis.