Ican be
found in animal cells.

1. determination

2. differentiation

Explanation:

heres the answer key for that study guide in case anyone needs it:

section 1:

1. zygote

2. specialized

3. embryonic stem cells

4. determination

5. differentiation

6. apoptosis

7. cells

8. groups of similar cells that work together to

perform a specialized function

9. sample lungs, stomach, kidneys

10. organ systems

11. sample human body

12. determination

13. differentiation

section 2:

1. homeostasis

2. sensors

3. control center

4. communication systems

5. targets

6. target

7. a: negative; b: positive

8. negative

9. positive

10. feedback

11. homeostasis

section 3:

1. organs

2. skin

3. liver

4. kidneys

5. calcium, phosphorus

6. hypothalamus

7. short-term

8. cold virus

9. long-term

10. diabetes

11. long, short

12. thermoregulation