Generally, Only One Sperm Fertilizes an Egg Because

question 43

Multiple Choice

Generally, only one sperm fertilizes an egg because

• A) sperm are so few that two are unlikely to arrive at the same time.
• B) sperm compete against one another before entering, and only the most fit one is accepted.
• C) one small entry hole called the blastopore allows only one sperm to fit through and then seals.
• D) many sperm enter but only one set of chromosomes can fuse with the egg nucleus; the other sperm are absorbed.
• E) when the first sperm membrane fuses with the egg membrane, it forms a fertilization membrane, which forms a barrier to the penetration of other sperm.

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Definitions:

Amino Acids

Organic compounds that combine to form proteins, serving as the building blocks of life and playing various roles in metabolism.

Triglycerides

A type of fat found in the blood, originating from food, that the body can either use for energy or store as fat tissue, affecting health.

Proteins

Large, complex molecules made up of amino acids, essential to the structure, function, and regulation of the body's tissues and organs.

Glucostatic Theory

A theory suggesting that blood glucose levels regulate feelings of hunger and satiety.