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Water, Carbs, Lipids and Protein Review

Total questions: 35

Worksheet time: 32mins

Name
Class
Date
1.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
2.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
3.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
4.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
5.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
6.
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
a)
Water is an acid.
b)
Water is a versatile solvent.
c)
Water has a high heat capacity.
d)
 Water acts as a buffer.
7.
 Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?
a)
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet
c)
The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
8.
The tightness across the surface of water that enables paper clips to float is ____________.
a)
adhesion
b)
capillary action
c)
surface tension
d)
polarity
9.
Which statement explains why water molecules stick together?
a)
both sides are negative
b)
one side has a positive charge and the other side has a negative charge
c)
one side has a negative charge adn the other side has a neutral charge
d)
both sides are positive
10.
When a molecule has an opposite electrical charge on each end, it is known as what?
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
11.

The ability of water molecules to stick to each other, creating surface tension is called:

a)

Cohesion

b)

Adhesion

c)

Insulation

d)

Ph

12.

What property of water allows for water to act as a temperature regulator for the world?

a)

Cohesive Behavior

b)

Expansion Upon Freezing

c)

High Specific Heat

d)

Universal Solvent

13.

Why does water move from the roots to the leaves of plants?

a)

Water is pushed by solutes

b)

Water is pulled by gravity

c)

Capillary action pulls the water molecules like a chain

d)

Water's cohesion causes it to "pull" towards the leaves

14.

The polymer called Proteins are made of the monomers....

a)

Nucleic Acids

b)

Amino Acids

c)

Glucose/Monosaccharides

d)

Glycerol

e)

Fatty Acids

15.

The polymer called Lipids are made of the monomers....

a)

Nucleic Acids

b)

Amino Acids

c)

Glucose/Monosaccharides

d)

Fatty Acids

16.
Which group of biomolecules provides quick energy to organisms?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
17.
Which group of organic molecules speed up chemical reactions and serve as immune defense mechanisms?
a)
proteins
b)
carbohydrates
c)
nucleic acids
d)
lipids
18.
Which group of organic molecules serve as long-term energy storage and waterproof coverings?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
19.

Building block of ...

a)

nucleic acids

b)

proteins

c)

lipids

d)

carbohydrates

20.
Which is not a chemical element needed to build sugars?
a)
Carbon
b)
Oxygen
c)
Nitrogen
d)
Hydrogen
21.
what is the storage(s) form of carbohydrate found in mammals?
a)
Glucose and glycogen
b)
Glycogen
c)
starch
d)
Fiber and glycogen
22.
Some carbohydrate foods are ________
a)
fruits
b)
grains
c)
vegetables
d)
all the above
23.
How many sugar units make up monosaccharides?
a)
one
b)
two
c)
three
d)
zero
24.
How many sugar units make up disaccharides?
a)
one
b)
two
c)
three
d)
zero
25.
The molecule of amylose that you see in the 
a)
disaccharide
b)
polypeptide
c)
polysaccharide
d)
monosaccharide
26.

Which diagram is a triglyceride?

a)
b)
c)
d)
27.

Which of these is not a function of lipids?

a)
Quick energy
b)
Sturctural components in cell membranes
c)
Waterproofing
d)
Long term energy storage
28.
Saturated fats are __________ at room temperature.
a)
liquid
b)
gases
c)
plasma
d)
solid
29.

Unsaturated fats

a)

have a bent structure

b)

have double bonds

c)

are liquids at room temperature

d)

all of these

30.

Which of these foods contains the most lipids?

a)

chicken

b)

butter

c)

celery

d)

Dr. Pepper

31.

Lipids are mostly made out of

a)

Carbon

b)

Nitrogen

c)

Oxygen

d)

Hydrogen

32.

Proteins are made of many ____ bonded together.

a)

amino acids

b)

enzymes

c)

polypeptides

33.

All amino acids have the same basic structure. Which part of the amino acid makes each each one unique?

a)

amino group

b)

carboxyl group

c)

R-group (side chain)

34.

What does an enzyme do?

a)

slows down chemical reactions

b)

speeds up chemical reactions

c)

increases the temperature of the reaction

35.

What is the role of protein in the body?

a)

Is the main source of energy for the body

b)

Helps to build and repair body tissue

c)

Provide warmth and cushioning to the body's organs

d)

Helps to transport vitamins through the body

e)

All of the above are roles of protein in the body

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