Chapter 1 And 2

Question 1

independent variable

Answer 1

What you control

Question 2

Dependent variable

Answer 2

What is being measured

Question 3

Darwins theory

Answer 3

Evolution occurs by natural selection

Question 4

Mutation

Answer 4

Chemical or physical change in DNA

Question 5

Variation

Answer 5

Different code for characteristics

Question 6

Adaptation

Answer 6

Changes in population to survive

Question 7

Taxonomy

Answer 7

Grouping of species based on common ancestors

Question 8

3 groups of taxonomy

Answer 8

Bacteria, archaea, eukarya

Question 9

Prokaryote

Answer 9

Single cell

Question 10

Eukaryote

Answer 10

Multicellular and has nucleus

Question 11

5 fundamental characteristics

Answer 11

Cellular organization, energy use, homeostasis, growth development reproduction, heredity

Question 12

Atoms

Answer 12

Smallest unit of matter

Question 13

Isotopes

Answer 13

Element that has different # of neutrons

Question 14

Weight

Answer 14

Gravitational pull

Question 15

Mass

Answer 15

Stays same

Question 16

Atomic #

Answer 16

of protons

Question 17

Protons =___

Answer 17

Electrons

Question 18

Cation

Answer 18

Positive charge

Question 19

Anion

Answer 19

Negative charge

Question 20

Atomic mass

Answer 20

Protons+ neutrons

Question 21

Covalent bonds

Answer 21

Shared pair of electrons

Question 22

Nonpolar

Answer 22

Equal sharing of electrons

Question 23

Polar

Answer 23

Unequal sharing of electrons

Question 24

Hydrophilic

Answer 24

Polar

Question 25

Hydrophobic

Answer 25

Nonpolar

Question 26

Buffers

Answer 26

Keeps constant ph