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Unit 2 Review

Total questions: 54

Worksheet time: 28mins

Name
Class
Date
1.

How many protons, electrons, and neutrons does Bromine have?

a)

P-35, E-35, N-45

b)

P-35, E-35, N-35

c)

P-45, E-45, N-35

d)

P-35, E-35, N-80

2.

How many valence electrons do all atoms want to have?

a)

1

b)

2

c)

6

d)

8

3.

If an atom loses an electron will its charge be positive or negative?

a)

negative

b)

positive

4.

How are ionic and covalent bonding different?

a)

ionic is sharing electrons, covalent is a transfer of electrons

b)

ionic is transferring electrons, covalent is sharing

5.

The reactants are the __ side of the arrow and the products are on the __ side.

a)

left, right

b)

right, left

6.

What gives water most of its properties?

a)

ionic bonding

b)

covalent bonding

c)

hydrogen bonding

d)

oxygen bonding

7.

What type of bond holds the hydrogens to the oxygen in a single water molecule?

a)

non-polar covalent

b)

ionic

c)

polar covalent

d)

hydrogen

8.

Which describes cohesion?

a)

water needs a lot energy to change temperature

b)

water is attracted to other water molecules

c)

water is attracted to other substances

d)

water is less dense as a solid than a liquid

9.

Which describes adhesion?

a)

water needs a lot energy to change temperature

b)

water is attracted to other water molecules

c)

water is attracted to other substances

d)

water is less dense as a solid than a liquid

10.

Which describes high specific heat?

a)

water needs a lot energy to change temperature

b)

water is attracted to other water molecules

c)

water is attracted to other substances

d)

water is less dense as a solid than a liquid

11.

What type of bond attaches one water molecule to another?

a)

hydrogen

b)

polar covalent

c)

non-polar covalent

d)

ionic

12.

When water molecules bond the ___ of one molecule bonds to the __ of the other.

a)

oxygen, oxygen

b)

hydrogen, hydrogen

c)

hydrogen, oxygen

13.

How many amino acids are there?

a)

10

b)

22

c)

20

d)

15

14.

What is the pH for a neutral substance?

a)

7

b)

more than 7

c)

less than 7

15.

What is the pH for an acid?

a)

7

b)

more than 7

c)

less than 7

16.

What is the pH for a base?

a)

7

b)

more than 7

c)

less than 7

17.

What are the three parts for the monomer of a nucleic acid?

a)

phosphate

b)

sugar

c)

R group

d)

amino group

e)

nitrogenous base

18.

What part of a nucleotide changes to make the four possible nucelotides?

a)

phosphate

b)

base

c)

sugar

19.

glucose is the main energy source for cells, what kind of macromolecule is it?

a)

carboydrate

b)

protein

c)

lipid

d)

nucleic acid

20.

What is the name of the reaction that bonds monomers to each other and creates a macromolecule?

a)

dehydration synthesis

b)

hydroylsis

c)

enzymatic

d)

physical change

21.

What is the name of the reaction that breaks down macromolecules into monomers?

a)

dehydration synthesis

b)

hydroylsis

c)

enzymatic

d)

physical change

22.

What subatomic particle has a negative charge?

a)

electron

b)

proton

c)

neutron

23.

What subatomic particle has a positive charge?

a)

electron

b)

proton

c)

neutron

24.

What subatomic particle has is neutral?

a)

electron

b)

proton

c)

neutron

25.

Which subatomic particles are found in the nucleus and account for the mass of the cell?

a)

proton

b)

electron

c)

neutron

26.

Does the same enzyme work for different reactions?

a)

Yes

b)

No

27.

Most mammals (ex. Polar bear) that live in cold weather have a layer of fat to maintain body temperature, which macromolecule makes up this fat?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

28.

Which of the molecules in this table is a carbohydrate?

a)

1

b)

2

c)

3

d)

4

29.

What is this describing?

A single molecule that makes up a polymer; a building block

a)

marcomolecule

b)

polysaccharide

c)

monomer

d)

disaccharide

30.

What macromolecule stores and transfers genetic information?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

31.

Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-soluble. This waxy coating is which type of macromolecule?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

32.

What macromolecule is mostly found in butter and oil?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

33.

This macromolecule store energy and makes up the cell membrane.

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

34.

What macromolecule has this for a monomer?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

35.

What macromolecule has this for a monomer?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

36.

What macromolecule has this for a monomer?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

37.

What macromolecule does this represent?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

38.

Lemur's bodies are adapted to store energy for times when food is scarce. Which macromolecule is primarily used for long-term energy storage in the lemur?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

39.

What macromolecule makes up DNA and RNA?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

40.

What type of macromolecule are enzymes?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

41.

Which macromolecule provides structure for hair, skin, and nails?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

42.

Which macromolecule is found in meat?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

43.

If an athlete were going to run a race, which macromolecule would be best for providing energy?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

44.

Which macromolecule would be best for repairing muscle?

a)

lipid

b)

carbohydrate

c)

protein

d)

nucleic acid

45.

What is the monomer of a protein?

a)

monosaccharide

b)

amino acid

c)

nucleotide

d)

glycerol + fatty acid

46.

What is the monomer of a carbohydrate?

a)

monosaccharide

b)

amino acid

c)

nucleotide

d)

glycerol + fatty acid

47.

Which of the molecules in this table is a protein?

a)

1

b)

2

c)

3

d)

4

48.

What is the monomer of a lipid?

a)

monosaccharide

b)

amino acid

c)

nucleotide

d)

glycerol + fatty acid

49.

What is the monomer of a nucleic acid?

a)

monosaccharide

b)

amino acid

c)

nucleotide

d)

glycerol + fatty acid

50.

The entire Lego house would represent a ____ in a macromolecule.

a)

marcomolecule

b)

polymer

c)

monomer

d)

disaccharide

51.

A large molecule consisting of many repeating sub-units.

a)

monosaccharide

b)

polymer

c)

monomer

d)

disaccharide

52.

Each small organic molecule can be a unit of a large organic molecule, and this is called a:

a)

monosaccharide

b)

macromolecule

c)

monomer

d)

disaccharide

53.

One Lego in a Lego house would represent a ____ in a macromolecule.

a)

polymer

b)

macromolecule

c)

monomer

d)

disaccharide

54.

Plants and animals are composed of organic compounds. List the 4 most common elements found in organic compounds.

a)

C, H, O, P

b)

C, H, Na, Cl

c)

C, H, S, P

d)

C, H, O, He

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