biology exam 1

Question 0

what are the four types of bonds

Answer 0

ionic, covalent, hydrogen and van deer waals

Question 1

homeostasis is the

Answer 1

ability of an organism to maintain constant internal conditions

Question 2

what charge do protons have

Answer 2

positive

Question 3

what charge do neutrons have

Answer 3

no charge

Question 4

what charge do electrons have

Answer 4

negative

Question 5

in hydrogen bond what are the charges of the oxygen and hydrogen molecules

Answer 5

oxygen is slightly negative

hydrogen is slightly positive

Question 6

what are ions

Answer 6

electrically charged molecules

Question 7

what is atomic number

Answer 7

number of protons

Question 8

what is atomic mass

Answer 8

number of neutrons+protons

Question 9

what is the octet rule

Answer 9

an atom is in its lowest energy state when it has 8 valence electrons.

Question 10

what is a covalent bond

Answer 10

when atoms share electrons

Question 11

what is a non polar covalent bond

Answer 11

when there is an equal sharing of electrons

Question 12

what is a polar covalent bond

Answer 12

when there is and unequal sharing of electrons

Question 13

what is an ionic bond

Answer 13

is a transfer of electrons

Question 14

what is a common monosaccharides

Answer 14

glucose, fructose

Question 15

what is glucose stored as

Answer 15

starch

Question 16

what are some jobs a lipid performs

Answer 16

keeps birds feathers dry, stores energy in fats

Question 17

examples of disaccharides

Answer 17

lactose=glucose+galactose
maltos=glucose+glucose
sucrose=glucose+fructose

Question 18

examples of polysaccharides

Answer 18

starch-in plants-energy storage
glycogen-in animals-energy storage
cellulose-in plants-structural
chitin-in insects-structural

Question 19

what cells are eukaryotic

Answer 19

animal, plant , fungal and protist

Question 20

what cells are prokaryotic

Answer 20

bacteria and archaea

Question 21

what is the cell size formula

Answer 21

volume over surface area

Question 22

what is the job of the cytoskeleton

Answer 22

mechanical support
anchor organelles
help move substances

Question 23

what is the job of the cilla

Answer 23

provide mobility

used to move substances outside human cells

Question 24

what is harvested energy called

Answer 24

ATP

Question 25

what happens in the process of photosynthesis

Answer 25

plants use the suns energy to convert carbon dioxide gas into sugar molecules

Question 26

what is a solvent

Answer 26

a solvent is something that can dissolved into another substance

Question 27

what is adhesion

Answer 27

it is the attraction between water molecules and other molecules

Question 28

cohesion

Answer 28

water molecules attracted too each other keeping tension tight

Question 29

osmosis

Answer 29

higher concentration moving lower concentrate

e.g the paper towel having water move throughout

Question 30

anabolic

Answer 30

descries the pathway that requires a net energy input to synthesis complex molecules from simpler ones (small to big)

Question 31

catabolic

Answer 31

complex broken into smaller compounds

Question 32

stomata

Answer 32

the opening that regulates gas exchange and water regulation between leaves and the environment

Question 33

chlorophyll

Answer 33

green pigment that captures the light energy that drives the reactions of photosynthesis

Question 34

Glycolysis

Answer 34

Glucose being broken down by enzymes producing energy and pyruvic acid

Question 35

Isotopes

Answer 35

Same of protons but different number neutrons