Fertilization Is Characterized by

question 293

Multiple Choice

Fertilization is characterized by

• A) a sperm's fertilin proteins binding to the ovum's integrin molecules.
• B) a block to polyspermy.
• C) multiple sperms penetrating the ovum.
• D) blastocyst formation.
• E) both (a) and (b) above.

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Definitions:

Enzyme Activity

The measure of the rate at which an enzyme catalyzes a reaction, converting substrate molecules into products.

Metabolic Pathway

A series of chemical reactions in a cell that build up or break down molecules for vital processes.

β-galactosidase Enzyme

An enzyme that catalyzes the hydrolysis of β-galactosides into monosaccharides, primarily involved in lactose breakdown.

Lac Operon

A gene regulatory mechanism in bacteria where the metabolism of lactose is controlled by the interaction of several genes and protein products.