1. Section 4-2: Homeostasis
Essential Question:
Why are proteins essential to living organisms and what are two types of proteins and their function?
Section 4-2: Homeostasis
Learning Target
Provide examples of essential functions of proteins in an organism (hormones, enzymes…).

2. announcements Biology Tutoring this week: Lunch B (Tuesday & Thursday)
7:00AM (Monday – Friday)
After school Biology Tutoring: Tuesday
You must sign up for retakes during Biology Tutoring. 7:00AM retakes only. Last day to retake Section 3 is 11/01/16.

3. Color Printer Paper = 10 Points
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Available Extra Credit:
Tissue Box = 2 Points
Plastic Pencil Box = 5 Points
Color Printer Paper = 10 Points

4. A ____ is a macromolecule made of amino acids.
overview
protein
A ____ is a macromolecule made of amino acids.

5. An ____ is a type of protein that speeds up the reaction rate.
overview
enzyme
An ____ is a type of protein that speeds up the reaction rate.

6. A ____ is a transport protein released by the brain.
overview
neurotransmitter
A ____ is a transport protein released by the brain.

7. A ____ is a signaling protein used for cellular communication.
overview
hormone
A ____ is a signaling protein used for cellular communication.

8. examples
In the digestive system, Pepsin & HCl are ____ that help break down food quickly.
enzymes

9. examples
In the circulatory system, Fibrinogen is an ___ that helps blood clot quickly.
enzymes

10. examples
hormones
In the endocrine system, Testosterone & Estrogen are ___ that help signal male and female development.

11. examples
neurotransmitters
In the nervous system, Dopamine & Seratonin are ___ that help send messages throughout the body.

12. examples
In the urinary system, Renin is an ___ that can regulate blood pressure quickly.
Enzyme (angiotensinogenase)

13. cancer
control
Cyclins are a type of protein that are involved in cell cycle _______ .

14. Cyclins regulate cell growth.
cancer
control
Cyclins regulate cell growth.

15. Without cyclins, a damaged positive feedback loop could cause cancer.
control
Without cyclins, a damaged positive feedback loop could cause cancer.

16. Cancer is uncontrolled cell growth.

17. A tumor is the result of the uncontrolled growth.
cancer
control
A tumor is the result of the uncontrolled growth.

18.
reflected