When Viewed Through a Microscope,one Characteristic of Living Cells Is

question 68

Multiple Choice

When viewed through a microscope,one characteristic of living cells is that their internal structures move.What organelles are most directly responsible for this motion we see?

• A)cell membrane and nucleus
• B)ribosomes and endoplasmic reticulum
• C)centrioles and cell wall
• D)mitochondria and cytoskeleton
• E)chloroplasts and lysosomes

---

Definitions:

Testosterone Level

The concentration of the hormone testosterone in the blood, significant for developing male physical characteristics and affecting mood and libido.

Early 20s

A term referring to the period in a person’s life from age 20 to 24, characterized by transitions in career, education, and personal identity.

Sexual Arousal

A state of heightened physiological and emotional response to sexual stimuli, often leading to sexual desire.

Retrograde Ejaculation

A condition where semen enters the bladder instead of exiting through the penis during ejaculation.