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Biochemistry Quiz 1

Total questions: 63

Worksheet time: 44mins

Name
Class
Date
1.

What pH does a neutral substance have?

a)

5

b)

6

c)

7

d)

8

2.

What is pH a measure of?

a)

Density

b)

Mass

c)

Hydrogen Ion Concentraion

d)

Polarity

3.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
4.

Draw chemical equation of water

5.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
6.

Two or more different elements chemically combine to form compounds.

a)

True

b)

False

7.

A combination of particles of one or more substance that are distributed uniformly throughout another substance is a/an

a)

Mixture

b)

Substance

c)

Solution

8.

Which is the stronger acid?

a)

pH 1

b)

pH 4

c)

pH 8

d)

pH 13

9.

What is the symbol for Nitrogen?

a)

Ni

b)

N

c)

NI

d)

Ng

10.

What is the symbol for Oxygen?

a)

Ox

b)

OG

c)

O

d)

Og

11.

What is the symbol for Carbon

a)

C

b)

CA

c)

CA

d)

Cb

12.

What is the symbol for Sodium?

a)

S

b)

So

c)

NA

d)

Na

13.

What is the symbol for Calcium?

a)

CA

b)

Ca

c)

C

d)

Cl

14.

What is the symbol for Chlorine?

a)

Ch

b)

Cl

c)

C

d)

CH

15.

Symbol for Hydrogen

a)

Hy

b)

He

c)

h

d)

H

16.
Substance dissolved in a solution
a)
concentration
b)
solute
c)
solvent
d)
solution
17.
Capable of being dissolved
a)
Soluble
b)
concentration
c)
colloid
d)
molarity
18.

In sweet tea the solvent would be

a)

water

b)

tea

c)

sugar

d)

lemon

19.

Reorder the following from the smaller to the larger

a)

Atom

b)

Molecule

c)

A cell

d)

Bacteria

e)

A virus

1)
2)
3)
4)
5)
20.
A combination of two or more substances that can be easily separated.
a)
dissolve
b)
mixture
c)
solution
d)
physical property
21.
the substance to be dissolved in a liquid
a)
solute
b)
solvent
c)
dissolve
d)
mixture
22.

What is a solution?

a)

the substance that dissolves in a solvent

b)

a liquid mixture that contains a solute and a solvent

c)

the liquid in which a solute is dissolved to form a solution

d)

mixture of water and solid that does not dissolve

23.

Which of these items will dissolve to form a solution?

a)

sand

b)

salt

c)

sugar

d)

couscous

24.

Water molecules are attracted to other water molecules. They are held together by hydrogen bonds.

a)

Adhesion

b)

Polarity

c)

Cohesion

d)

Solvent

25.

Water molecules are attracted to different substances that have a charge. An example would be water sticking to a leaf.

a)

Adhesion

b)

Cohesion

c)

Polarity

d)

Heat Capacity

26.

Mixture where the components are evenly distributed throughout

a)

solute

b)

solution

c)

solvent

d)

suspension

27.

The hydrogen atom and oxygen atom do not share the electrons equally, resulting in partial charges at the ends of water molecules

a)

Polarity

b)

Cohesion

c)

Adhesion

d)

Heat Capacity

28.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
29.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
30.
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
31.
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
32.
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
33.
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
34.
When water molecules stick easily to other water molecules, this is called what?
a)
cohesion
b)
adhesion
c)
solution
d)
polar molecule
35.

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

a)

Cohesion

b)

Adhesion

c)

Insulation

d)

Ph

36.

Which type of repeating pattern?

a)

A) Fractal

b)

B) Tessellation

37.

Where would you find a fractal pattern in nature?

a)

A) In a fern leaf

b)

B) In the branching of a tree

c)

C) In the heart and blood vessels

d)

D) Pretty much every where, if you pay attention.

38.

How can an understanding of fractals be used to describe geography?

a)

A) In the formation of mountain ranges

b)

B) In the flooding pattern of a shoreline

c)

C) In the fault lines where earthquakes frequently occur

d)

D) All of the above

39.

Is this an example of Fibonacci's number sequence in nature?

a)

A) Yes

b)

B) No

40.

The sun gives off __________ energy.

a)

mechanical

b)

electrical

c)

radiant

41.

Which of the following elements are found in all macromolecules? (Select all that apply).

a)
b)
c)
d)
42.

Which of the following are examples of carbohydrates? (Select all that apply).

a)

Bread

b)

Pasta

c)

Olive Oil

d)

Cheese

43.

Which macromolecule stores energy?

a)

Carbohydrates

b)

Proteins

c)

Lipids/Fats

d)

Nucleic Acids

44.

Match the following

a)
1.

carbohydrate

b)
2.

lipid

c)
3.

protein

45.

Match the MACROMOLECULES and their MONOMERS.

Hint: Monomer = a single unit

a)

carbohydrate

1.

monosaccharide

b)

lipid

2.

fatty acid & glycerol

c)

protein

3.

amino acid

d)

nucleic acid

4.

nucleotide

46.

What is this?

a)

water

b)

DNA

c)

a snake

47.

Match the following MONOMERS and MACROMOLECULES

a)
1.

Nucleic Acid

b)
2.

Protein

c)
3.

Lipid

d)
4.

Carbohydrate

48.

An enzyme is a ______________.

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

49.

A single hydrogen atom is a molecule.

a)

TRUE

b)

FALSE

50.

H₂O is a compound.

a)

TRUE

b)

FALSE

51.
All matter is made of 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
52.
How many hydrogen atoms are there in a water molecule? 
a)
0
b)
1
c)
2
d)
3
53.

O2 is a compound molecule.

a)

TRUE

b)

FALSE

54.
a)

Element

b)

compound molecules

c)

elemental molecules

d)

Mixture

55.

This picture represents which of the following?

a)

elemental molecule

b)

compound molecule

56.

A mixture in which its composition is the same throughout the mixture and it cannot easily be identified nor separated

a)

Homogenous Mixture

b)

Heterogenous Mixture

57.
a)
Element
b)
Compound
c)
Mixture
58.

Which of the following elements are found in all macromolecules? (Select all that apply).

a)
b)
c)
d)
59.

Which macromolecule is used as our main source of energy?

a)

Lipids/Fats

b)

Nucleic Acids

c)

Proteins

d)

Carbohydrates

60.

Which macromolecule gives LONG-TERM energy?

a)

lipid

b)

carbohydrate

c)

nucleic acid

61.

Match the following

a)
1.

carbohydrate

b)
2.

lipid

c)
3.

protein

62.

Which food contains mostly carbohydrates?

a)
b)
c)
d)
63.

Identify the products in the chemical equation.

a)

carbon dioxide

b)

water

c)

glucose

d)

oxygen

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