Unit 2 Vocabulary

Question 1

Polar

Answer 1

a molecule with opposite ends of the molecule with opposite charges

Question 2

Hydrogen bond

Answer 2

bonds that water molecules form (up to 4)

Question 3

Cohesion

Answer 3

water’s attraction to other water molecules

Question 4

Adhesion

Answer 4

water’s attraction to other objects

Question 5

Surface tension

Answer 5

tightness across the surface of water caused by the attraction between water molecules

Question 6

Capillary Action

Answer 6

water’s ability to creep up thin tubes

Question 7

Specific heat

Answer 7

how much heat is needed to raise the temperature of water

Question 8

Solution

Answer 8

a mixture of 2 things which mix together evenly

Question 9

Solvent

Answer 9

water

Question 10

Solute

Answer 10

what you are dissolving

Question 11

Hydrophobic

Answer 11

tails that are hidden in the middle of the bilayer

Question 12

Hydrophilic

Answer 12

in groups and face the aqueous solution

Question 13

Organic

Answer 13

molecule that is made of many carbon atoms (and hydrogen)

Question 14

Macromolecules

Answer 14

a large molecule in a living thing, made up of carbon atoms

Question 15

Carbohydrate

Answer 15

made of carbon, hydrogen and oxygen
starches and sugars
main energy source
provide plant structure

Question 16

Lipids

Answer 16

made from hydrogen, carbon & oxygen
fates, oils, waxes, steroids
store energy

Question 17

Protein

Answer 17

made of nitrogen, carbon, hydrogen, and oxygen
control rate of chemical reactions
help fight diseases

Question 18

Nucleic Acid

Answer 18

made of hydrogen, oxygen, nitrogen, carbon, and phosphorus
stores genetic information

Question 19

Saccharide

Answer 19

another name for sugar

Question 20

Glucose

Answer 20

important sugar
formula is C(6)H(12)O(6)

Question 21

Amino Acid

Answer 21

building blocks of proteins

Question 22

Peptide bond

Answer 22

2 amino acids bonding together

Question 23

Polymer

Answer 23

large molecule made of many smaller parts

Question 24

Monomer

Answer 24

sub units of polymers

Question 25

Enzyme

Answer 25

protein that changes rate of chemical reaction

Question 26

Catalyst

Answer 26

anything that increases rate of reaction

Question 27

Substrate

Answer 27

molecule that will bond to an enzyme

Question 28

Active Site

Answer 28

area on an enzyme where a substrate bonds

Question 29

Base

Answer 29

Bitter tasting
Slippery feeling
pH > 7
Have a lot of OH-
floating in water,
but very little
H+ floating in water

Question 30

Denature

Answer 30

changes an enzymes shape

Question 31

Acid

Answer 31

Taste sour
pH < 7
Have a lot of H+ floating in water