When an Animal Cell Is Placed in a Hypotonic Solution

question 16

Multiple Choice

When an animal cell is placed in a hypotonic solution and water enters the cell via osmosis, the volume of the cell increases until it bursts. This does NOT happen to plant cells, because ________.

• A) they have large central vacuoles, which provide abundant space for storage of incoming water
• B) the composition of their plasma membranes differs from that of animal-cell plasma membranes in a way that provides much greater strength
• C) they have cell walls, which prevent the entry of water by osmosis
• D) they have cell walls, which provide pressure to counteract the pressure of the incoming water
• E) certain gated channel proteins embedded in their plasma membranes open as osmotic pressure decreases, allowing excess water to leave the cell

---

Definitions:

Secure Attachment

The attachment pattern in which an infant uses the caregiver as a secure base from which to explore, seeks contact during reunions, and is easily comforted by the caregiver.

Adolescent Pregnancy

Pregnancy that occurs in a female individual who is in the adolescent stage of development, typically between the ages of 13 and 19.

Sexually Transmitted Infection

A type of infection transmitted through sexual contact, caused by bacteria, viruses, or parasites.

Heterosexual Contact

Sexual interaction between individuals of the opposite sex.