semester 1 exam part 4

Question 1

a flattened membranous sac inside a chloroplast that contains most of the components involved in the light reaction of photosynthesis

Answer 1

thylakoid

Question 2

the molecule that accepts electrons that the chlorophyll a molecules have lost

Answer 2

primary electron acceptor

Question 3

carbon atoms are fixed into organic compounds in

Answer 3

the calvin cycle

Question 4

to produce the same amount of carbonhydrate, C4 plants require less

Answer 4

carbon dioxide than C3 plants

Question 5

which of the following environmental factors will cause a rapid decline in the photosynthesis rate if the factor rises above a certain level

Answer 5

temperature

Question 6

organic compounds that can be made from the products of the calvin cycle include

Answer 6

carbonhydrates, amino acids, and lipids

Question 7

which of the following is not part of the light reactions

Answer 7

carbon fixation

Question 8

the light reactions take place

Answer 8

on the thylakoid membrane

Question 9

during photosynthesis, oxygen is produced when

Answer 9

water is split

Question 10

excited electrons that leave chlorophyll a travel along two electron transport chains, resulting in the production of

Answer 10

NADP

Question 11

a process that relies on a concentration gradient of protons across the thylakoid membrane to synthesize ATP

Answer 11

chemiosmosis

Question 12

the breakdown product of glucose that diffuses into the mitochondrial matrix fro further breakdown is

Answer 12

pyruvic acid

Question 13

glycolysis takes place

Answer 13

in the cytosol

Question 14

the net number of ATP molecules made directly by glycolysis is

Answer 14

2

Question 15

the starting substance of the krebs cycle, which is regenerated at the end of the cycle is

Answer 15

oxaloacetic acid

Question 16

during glycolysis, glucose is

Answer 16

partially broken down and some of its stored energy is released

Question 17

the electron transport chian or aerobic respiration

Answer 17

pumps protons into the space between the inner and outer mitochondrial membranes

Question 18

the krebs cycle

Answer 18

breaks down a two carbon molecule into two molecules of carbon dioxide

Question 19

both lactic acid fermentation and alcoholic fermentation produce

Answer 19

NAD+ from NADH and H+

Question 20

the krebs cycle occurs in the

Answer 20

mitochondrial matrix

Question 21

most of the ATP synthesized in aerobic respiration is made

Answer 21

through chemiosmosis

Question 22

by accepting electrons and protons the oxygen used in aerobic respiration turns into

Answer 22

H20

Question 23

glycolysis begins with glucose and produces

Answer 23

pyruvic acid

Question 24

the electron transport chian is driven by two products of the krebs cycle

Answer 24

NADH and FADH2

Question 25

six carbon compound that is the product of acetyl CoA and oxaloacetic acid is

Answer 25

citric acid

Question 26

cellular respiration in the presence of oxygen is

Answer 26

aerobic

Question 27

before the krebs cycle can proceed, pyruvic acid must be converted into

Answer 27

acetyl CoA

Question 28

which of the following is not a product of the krebs cycle

Answer 28

ethyl alcohol

Question 29

cellular respiration is similar to photosynthesis in that they both

Answer 29

produce ATP
involve chemiosmosis
make PGAL

Question 30

ATP is synthesized in the electron transport chain when which of the following moves across the inner mitochondrial membrane

Answer 30

protons