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1st 9 Week Review

Total questions: 30

Worksheet time: 40mins

Name
Class
Date
1.
Homeostasis
a)
allows for a wildly fluctuating internal environment
b)
is impossible in vertebrates
c)

is the maintenance of a relatively stable internal environment

d)

is the maintenance of a relatively stable external environment

2.

When you are hungry, you eat.

What is the response?

a)

hunger

b)

eating

c)

stomach

d)

nerves

3.
Homeostasis in the human body is often maintained by a: 
a)

the brain only

b)
solar feedback loop
c)

the muscles

d)
negative feedback loop
4.
What is the evaporation of a liquid to cool the body?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
5.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
6.

Loops that cause a response to build up and build up until something big happens are called ____________ loops

a)

positive

b)

negative

7.

Labor during pregnancy is an example of a ____________ feedback loop

a)

positive

b)

negative

8.

Blood clotting is an example of a ____________ feedback loop

a)

positive

b)

negative

9.

The heater kicks on and the house warms up, so it kicks off. Then the house cools a bit and the heater kicks back on. This continues all day. It's a _____________ loop.

a)

positive

b)

negative

10.

Negative feedback loops result in stabilization of a system.

Negative feedback is a process that _______ the effects of a change.

a)

reduces

b)

amplifies

c)

has no effect

11.
Carbohydrates are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
12.
Lipids are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
13.
Proteins are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
14.

A lipid is a macromolecule that is used to...

a)

give cells/systems energy

b)

give cells/systems long term energy storage

c)

help cells with chemical processes.

15.
Nucleotides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
16.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
17.

All proteins

a)

have a unique structure that determines their unique function.

b)

are exactly the same in function but different in structure.

c)

are exactly the same in structure but different in function.

d)

are enzymes.

18.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
19.

Which of the following organic compounds is the main source of quick energy for living things?

a)
carbohydrates
b)
lipids
c)
nucleic acids
d)
proteins
20.
Which macromolecule stores energy, insulates us, and makes up the cell membrane?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
21.
How do the number of H atoms compare to the number of O atoms in a carbohydrate?
a)
There are TWICE as many H
b)
They are the same amount
c)
There are THREE times as many H
d)
There are TWICE as many O
22.
What is the first barrier against disease?
a)
White blood cells
b)
Red blood cells
c)
the skin
d)
leucocytes 
23.

The purpose of the immune system is to:

a)

Help germs invade your body

b)

Fight off sickness

c)

Make your nose run

d)

Give you diarrhea

24.
Anything that triggers an immune response is a/n
a)
lymph cell
b)
antigen
c)
antibody
d)
neutrop
25.

Which of the following is not regulated by homeostasis?

a)

body temperature

b)

blood sugar

c)

blood pH

d)

body movements

26.

____________________ helps warm the human body when we are cold.

a)

sweating

b)

shivering

c)

inhaling oxygen

d)

exhaling carbon dioxide

27.

What is the best definition of homeostasis?

a)

Keeping a constant temperature

b)

Taking in oxygen and getting rid of carbon dioxide

c)

Getting rid of waste

d)

maintenance of a constant internal environment

28.

Why is it important to maintain a constant body temperature?

a)

to stop the multiplication of bacteria in the body

b)

so that we don't get cold

c)

to maintain the optimum temperature for enzymes

d)

so that we have enough energy to move

29.
What describes a lack of water in the blood?
a)
Dehydration
b)
Rehydration
c)
Hydration
d)
Concentrated
30.
What is another word that can be used to describe "homeostasis"?
a)
STABLE
b)
EQUAL
c)
COMPLETE
d)
CORRECT

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