Erythrocytes

question 222

Multiple Choice

Erythrocytes

• A) do not contain a nucleus.
• B) survive an average of 120 days.
• C) do not have the ability to use O₂ for energy production despite the fact that they transport O₂ to all the other tissues of the body.
• D) do not contain a nucleus and survive an average of 120 days.
• E) all of these answers.

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Definitions:

Sex Chromosomes

The chromosomes (X and Y) responsible for determining the biological sex of an organism.

Spermarche

The beginning of development of sperm in boys’ testicles at puberty, marking the onset of adolescent fertility.

Testes

The male reproductive glands that produce sperm and the hormone testosterone.

XY

A chromosomal designation for male sex in many organisms, including humans, where males typically have one X and one Y chromosome.