Homeostasis Quiz

What is homeostasis?

• The process by which organisms maintain a stable internal environment

• The exchange of oxygen and carbon dioxide in the lungs

• The breakdown of glucose to release energy

• The production of hormones in the body

How do cells maintain homeostasis?

• By changing their shape

• By moving to different locations

• By responding to changes and exchanging materials with their environment

• By dividing into new cells

To maintain homeostasis, organisms must be able to __________ and __________ to their environment.

• grow; shrink

• respond; adapt

• hibernate; migrate

• eat; reproduce

What substance is continuously moving into and out of cells to help maintain homeostasis?

• Proteins

• Water

• Glucose

• Oxygen

In response to HIGH Blood Sugar, the pancreas releases __________ causing glucose to be taken into the cells which __________ the blood sugar level.

• glucagon; increases

• insulin; lowers

• adrenaline; stabilizes

• cortisol; elevates

In response to Low Blood Sugar, the pancreas releases __________ causing the liver to release glucose into the bloodstream to __________ blood sugar level.

• insulin; decrease

• glucagon; increase

• adrenaline; balance

• cortisol; reduce

Glucose is moving into and out of cells to keep the body in __________.

• homeostasis

• an anabolic state

• a catabolic state

• ketosis

What are the functions of the cell membrane?

• To protect the cell from its surroundings

• To regulate the movement of substances in and out of the cell

• To provide structural support to the cell

• All of the above

What is the main function of the cell/plasma membrane?

• To produce energy for the cell

• To help cells maintain homeostasis

• To store genetic information

• To conduct electrical impulses

What is meant by the fluid mosaic model?

• A model describing the cell wall of plants

• A model describing the rigid structure of the cell membrane

• A model describing the cell membrane as a mosaic of components that gives the membrane a fluid character

• A model describing the impermeability of the cell membrane