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Ch 2 Biochemistry

Total questions: 55

Worksheet time: 28mins

Name
Class
Date
1.

the science and study of matter

a)

biology

b)

science

c)

chemistry

d)

physics

2.

the basic unit of matter

a)

element

b)

atom

c)

compound

d)

monomer

3.

a positively charged subatomic particle found in the atomic nucleus

a)

proton

b)

neutron

c)

electron

4.

a neutral subatomic particle (has no charge) found in the atomic nucleus

a)

proton

b)

neutron

c)

electron

5.

a negatively charged subatomic particle found orbiting an atomic nucleus

a)

proton

b)

neutron

c)

electron

6.

a pure substance made up of only one type of atom

a)

isotope

b)

chemical compound

c)

matter

d)

element

7.

atoms of the same element, but have different numbers of neutrons (ex: Carbon 12, 14, 16)

a)

neutrons

b)

isotopes

c)

chemical compounds

d)

elements

8.

substances formed by the chemical combination of two or more elements in specific proportions/amounts

a)

chemical compounds

b)

solutions

c)

elements

9.

type of bond that occurs when electrons are transferred from one atom to another

a)

Van der Waals forces

b)

covalent bond

c)

ionic bond

10.

type of bond that occurs when electrons are shared between atoms

a)

chemical compounds

b)

ionic bond

c)

atomic bond

d)

covalent bond

11.

type of bonds that involve weak intermolecular forces between + and - charged regions of molecules

a)

Van der Waals forces

b)

ionic bond

c)

covalent bond

12.

what is the mass per unit of measure for an object?

a)

gravity

b)

density

c)

weight

13.

when the charges charges of a molecule are unevenly distributed (more + on one side, and more - on the other side)

a)

cohesion

b)

polarity

c)

adhesion

d)

isotopes

14.

the attraction between molecules of the same substance (image: water molecules all together on top of a penny)

a)

covalent bond

b)

adhesion

c)

ionic bond

d)

cohesion

15.

the attraction between molecules of different substances

a)

covalent bond

b)

adhesion

c)

ionic bond

d)

cohesion

16.

when both adhesion and cohesion together cause liquids to move up narrow tube structures

a)

capillary action

b)

adhesion

c)

cohesion

17.

the amount of energy needed to increase the temperature of a substance

a)

ions

b)

temperature

c)

thermal energy

d)

heat capacity

18.

a material composed of two or more elements or compounds that are physically mixed together (but not chemically combined)

a)

chemical compound

b)

mixture

c)

solution

d)

element

19.

when the molecules of a mixture are evenly distributed

a)

solution

b)

suspension

c)

solute

d)

solvent

20.

the substance that gets dissolved in a solvent

a)

solution

b)

suspension

c)

solute

d)

solvent

21.

the substance that a solute is dissolved in (is usually water)

a)

solution

b)

suspension

c)

solute

d)

solvent

22.

a mixture of water and non-dissolved material

a)

solution

b)

suspension

c)

solute

d)

solvent

23.

scale that measures the concentration of hydrogen ions (H+) in a solution (ranges from 0-14) (can also say it shows how acidic or basic a solution is)

a)

pH scale

b)

acids and bases scale

c)

atomic scale

24.

compounds that form hydrogen ions (H+) in a solution (has pH less than 7)

a)

acids

b)

bases

c)

buffers

25.

compounds that form hydroxide ions (OH-) in a solution (has pH greater than 7)

a)

acids

b)

bases

c)

buffers

26.

compounds that prevent sharp, sudden changes in pH

a)

acids

b)

bases

c)

buffers

d)

pH solutions

27.

means big / large molecules

a)

micromolecules

b)

macromolecules

c)

biomolecules

d)

polymolecules

28.

the study of all compounds that contain carbon bonds

a)

organic chemistry

b)

chemical chemistry

c)

physical chemistry

29.

small individual molecules are called

a)

polymers

b)

monomers

c)

elements

d)

atoms

30.

large molecules made up of monomers linked together are

a)

polymers

b)

atoms

c)

elements

31.

chemical process where monomers are joined together to form polymers

a)

chemical fusion

b)

polymerization

c)

monomerization

32.

store and release energy, are source of quick energy for organisms

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

33.

the monomer of carbohydrates are

a)

polysaccharides (complex sugars)

b)

monosaccharides (single sugars)

34.

the polymer of carbohydrates are

a)

polysaccharides (complex sugars)

b)

monosaccharides (single sugars)

35.

an important sugar (carbohydrate) for organisms

a)

proteins

b)

catalyst

c)

glucose

d)

monomer

36.

a complex carbohydrate, function is to store extra sugars

a)

starch

b)

cellulose

c)

glucose

d)

keratin

37.

stores energy, form biological membranes, chemical messengers

a)

proteins

b)

carbohydrates

c)

lipids

d)

nucleic acids

38.

fats, oils, and waxes are types of

a)

proteins

b)

lipids

c)

carbohydrates

d)

nucleic acids

39.

glycerol combined with fatty acid side chains form a

a)

carbohydrate

b)

nucleic acid

c)

protein

d)

lipid

40.

macromolecules made up of amino acids are

a)

carbhydrates

b)

proteins

c)

nucleic acids

d)

lipids

41.

the monomer of proteins are

a)

nucleotides

b)

glycerol + fatty acids

c)

sugars

d)

amino acids

42.

the polymer of proteins are

a)

starches

b)

amino acids

c)

complete proteins

d)

lipids

43.

the type of bond between amino acids of a protein

a)

peptide bond

b)

atomic bond

c)

covalent bond

d)

ionic bond

44.

macromolecules that store and transmit genetic information

a)

nucleic acids

b)

proteins

c)

lipids

d)

carbohydrates

45.

the polymers of nucleic acids are

a)

nucleotides

b)

bases

c)

DNA and RNA

d)

single and double helix

46.

the monomer of nucleic acids is a

a)

nucleotide

b)

nitrogen base

c)

5-carbon sugar

d)

phosphate group

47.

the process that changes one set of chemicals into another is called a

a)

chemical production

b)

chemical reaction

c)

chemical destruction

48.

the substances that "go into" a chemical reaction (to start it)

a)

substrates

b)

products

c)

reactants

d)

catalysts

49.

the substances that "come out" of a chemical reaction (the results)

a)

substrates

b)

products

c)

reactants

d)

catalysts

50.

the amount of energy required to start a chemical reaction

a)

heat capacity

b)

reactants

c)

activation energy

51.

a substance that speeds up a chemical reaction by lowering the activation energy required

a)

catalyst

b)

reactants

c)

products

d)

thorium

52.

types of proteins that act as a biological catalyst

a)

enzymes

b)

amino acids

c)

proteins

d)

nucleic acids

53.

material that binds to an enzyme's active site

a)

solvent

b)

reactant

c)

substrate

d)

solute

54.

the area of an enzyme that a substrate binds to

a)

active site

b)

denature site

c)

substrate site

55.

process when the molecular structure of a protein is changed

a)

mutation

b)

denture

c)

chemical reaction