The Enzyme Phosphofructokinase (PFK) Catalyzes a Key Step in Glycolysis

question 59

Multiple Choice

The enzyme phosphofructokinase (PFK) catalyzes a key step in glycolysis. PFK is inhibited by high levels of which of the following molecules?

• A) glucose and NAD⁺
• B) AMP and ATP
• C) ATP and citrate
• D) citrate and CO₂

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Definitions:

Spindle

Collection of microtubules that assist in the orderly distribution of chromosomes during cell division.

Plant Cells

Cells that are the basic building blocks of plant life, characterized by a rigid cell wall, chloroplasts for photosynthesis, and a large central vacuole.

Centrosomes

Organelles that serve as the main microtubule organizing centers in animal cells, playing a critical role in cell division.

Crossing-Over

Exchange of segments between non-sister chromatids of a bivalent during meiosis.