Homeostasis and Transport

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Practice Quiz for Biology Keystone Exam Module A Anchor 4

Which of the following indicates that homeostasis is not being maintained? *

1 point

Blood glucose levels drop quickly

Human body temperature is at a healthy 98.6 degrees

Cell division occurs at a steady rate

Blood pH remains at an ideal level

Plasma membranes contain channel proteins to help transport certain molecules, like ions, across the membrane. Which of the following allow channel proteins to function without energy? *

1 point

Diffusion

Facilitated diffusion

Osmosis

Active transport

Which correctly describes what will happen to a freshwater plant cell when it is placed in salt water? *

1 point

The freshwater plant cell will swell because the salt water is hypotonic.

The freshwater plant cell will swell because the salt water is hypertonic.

The freshwater plant cell will shrivel because the salt water is hypotonic.

The freshwater plant cell will shrivel because the salt water is hypertonic.

Which structural feature of the plasma membrane is composed of a hydrophobic region and a hydrophilic region? *

1 point

Protein

Phospholipid

Carbohydrates

Cholesterol

What two processes are represented by diagram A and B below? *

1 point

Active transport in the form of exocytosis and endocytosis

Passive transport in the form of exocytosis and endocytosis

Osmosis

Diffusion

How are osmosis and diffusion different? *

0 points

How are osmosis and diffusion similar? *

0 points

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