Quiz #2 - Cell Membrane and Homeostasis

The maintenance of an organism’s internal environment is called:

• compensating
• homeostasis
• balancing
• routine

What type of feedback loop is shown?

• Positive
• Neutral
• Negative

Name the levels of organization in the human body in order from smallest to largest:

• Tissue, organ, organ system
  
• Organ system, tissue, organs, cells
  
• Cells, tissue, organs, organ system
  
• Cells , organs, tissue, organ system

What is the point of a feedback loop?

• To provide the body with more energy

• To provide the body with more food

• To make sure the conditions in the body are always changing

• To make sure the conditions in the body remain stable

If the environment gets cold, we will often shiver in order to:

• keep body temperature the same as the external temperature
• decrease body temperature
• increase body temperature
• regulate blood pressure

What type of feedback loop is shown?

• negative
• neutral 
• positive

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

Movement of molecules from an area of high concentration to an area of low concentration is

• diffusion 
• passive transport
• osmosis
• all of the above

If a red blood cell is put in distilled water, what will most likely happen to the cell?

• Nothing will happen

• It will shrivel.

• It will burst and then shrivel up

• It will swell and burst

What does semi-permeable mean?

• Some molecules can move through the membrane

• Nothing can move through the membrane

• All molecules can pass through the membrane.