Unit 04 Introduction - Homeostasis

Reorder

List the correct order of structural organization in multicellular organisms, from simplest to most complex.

• Chemical Level (Atoms and Molecules)

• Cellular Level

• Tissue Level

• Organ Level

• Organ System

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

Active transport moves molecules ___ their concentration gradient.

• along

• against

• antiparallel with

• do not pick this one

Multiple Select

Which of the following statements about active transport are correct?

• It requires energy input from ATP.

• It moves molecules from low to high concentration.

• It uses transport proteins in the membrane.

• It only occurs in plant cells.

Open Ended

In your own words, what is homeostasis?

Match

Match the following:

• Stimulus

• Response

• Outcome

Body temperature increases

The body sweats → sweat evaporates

The body cools down

• Body temperature increases

• The body sweats → sweat evaporates

• The body cools down

Match

Match the following:

• Stimulus

• Response

• Outcome

Body temperature decreases

Rapid muscle contractions produce heat

The body warms up

• Body temperature decreases

• Rapid muscle contractions produce heat

• The body warms up

Multiple Choice

When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.  What kind of feedback loop is this?

• Positive Feedback Response
• Negative Feedback Loop