Bio Final Exam Part 3

Front 1

most of the photosynthesis in the world takes place

Back 1

in the waters of the earth

Front 2

the oxygen released in photosynthesis comes from:

Back 2

water

Front 3

in photosynthesis the light reactions must be connected to the CO2 reduction cycle by transfer of

Back 3

ATP and NADPH2

Front 4

maximum rates of photosynthesis are obrained with:

Back 4

both red and blue light supplied together

Front 5

most of the useful energy released from glucose catabolism (respiration) is transferred to

Back 5

ATP

Front 6

which of the following will NOT serve as an energy source in respiration after you eat or drink?

Back 6

carbon dioxide

Front 7

if all the mitochondria were removed from the cells of green plants, which one of the following biochemical processes would immediately cease:

Back 7

repiration

Front 8

the yield of energy from anaerobic respiration:

Back 8

is less than from aerobic repiration

Front 9

during glycolysis what provides the initial energy of activation or source of start up energy so that glycolysis can produce 4 ATP's?

Back 9

ATP

Front 10

which of the following is an example of an electron carrier molecule?

Back 10

NADH

Front 11

during celllar repiration, where does electron transport specifically occur?

Back 11

inner mitchondrial membrane

Front 12

which of the following functions as an electron acceptor in the citric acid cycle

Back 12

FAD

Front 13

the role of water in photosynthesis is to

Back 13

provide electrons & H+

Front 14

where do most of the carbon atoms come from that make up a plant's or animal's tissues?

Back 14

CO2 from the air

Front 15

if you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up?

Back 15

H in glucose and water; O in O2

Front 16

an electron-transport chain for photoautotrophs is located in which of the following:

Back 16

chloroplasts

Front 17

dark reactions (or light independent reactions) can be called "dark reactions" because:

Back 17

they do not depend directly on sunlight as long as ATP and NADPH2 are available

Front 18

where in the process of photosynthesis is oxygen gas produced?

Back 18

during light capture

Front 19

the photosynthetic process where water is split and H+, e-, and O2 is given off is called:

Back 19

photolysis

Front 20

what is the source of the chemical energy that most cells on earth rely on?

Back 20

photosynthsis

Front 21

which of the following donates phosphate and energy in the calvin-benson cycle?

Back 21

ATP

Front 22

sugars are made in the organelle known as the:

Back 22

chloroplast

Front 23

in what form do plants store the energy captured by photosynthesis?

Back 23

sugars

Front 24

which of the following endings denotes an enzyme?

Back 24

-ase

Front 25

what product that is required by plants do animals produce during cellular respiration?

Back 25

CO2

Front 26

what is the purpose of a cuticle on a leaf?

Back 26

to prevent water loss

Front 27

what happens to the energy carriers made during the light reactions? they are use

Back 27

to provide energy for the synthesis of sugar

Front 28

electron transfer chains allow a series of controlled

Back 28

oxidation-reduction reactions

Front 29

which of the following can pick up electrons and deliver them to an electron transfer chain?

Back 29

NAD

Front 30

every day a human must product about ____ of ATP

Back 30

40lbs or more

Front 31

which of the following statements is NOT true concerning an electron that has absorbed a photon?

Back 31

it becomes more stable and stays in its orbit

Front 32

which of the following statements describes an electron transfer chain?

Back 32

it transfers energy stepwise, from one compound to another

Front 33

in certain organisms and under certain conditions ______ can be used as an energy alternative to glucose

Back 33

-fatty acids
-amino acids
-glycerol
-(all of the above)

Front 34

during which part of potosynthesis is O2 created?

Back 34

O2 is a product in the light reactions

Front 35

before photosynthesis evolved, _____ was rare in the earth's atmosphere.

Back 35

O2

Front 36

the term "cycle" is used to describe the calvin cycle because

Back 36

the process begins and ends with the same C5 molecule

Front 37

which of the following occurs during the calvin cycle of photosynthesis?

Back 37

carbon dioxide is converted to chemicals that can be used to make sugars

Front 38

which of the following is NOT true of chlorophyll?

Back 38

it is found in mitochondria

Front 39

suppose you are studying photosynthesis in a research lab. you grow your plants in a chamber with a source of water that has a radioactively labeled oxygen atom. what photosynthetic product will be radioactive?

Back 39

O2 gas

Front 40

if a molecule or compound gains electrons, it has been:

Back 40

reduced

Front 41

a leaf looks green because

Back 41

leaf pigments reflect green light

Front 42

pyruvate can be regarded as the end-product of

Back 42

glycolysis

Front 43

what is the name of the process by which reduced NAD+ transfers electrons to oxygen in respiration?

Back 43

electron transport phosphorylation or ETC

Front 44

during electron transport phosphorylation, which ions accumulate in the outer compartment of the mitochondria that will later produce ATP?

Back 44

hydrogen

Front 45

the ultimate or final electron acceptor of spend or tired electrons in aerobic repiration is

Back 45

O2

Front 46

under anaerobic conditions muscle cells produce

Back 46

lactic acid

Front 47

if fermentation follows glycolysis

Back 47

the two NADH molecules produced during glycolysis will (depending on the organism) be used to reduce pyruvate to either lactate or ethanol and CO2. NAD must be recycled to do this

Front 48

lactate production in muscle cells is

Back 48

-temporary
-due to oxygen deficiency
-an NAD regenerator

Front 49

when blood glucose levels decrease (as between meals), what reserves or stored molecules are tapped first?

Back 49

glycogen

Front 50

which of the following is the main purpose of cellular repiration?

Back 50

release of energy

Front 51

which of the following are produced during the light reactions of photosynthesis?

Back 51

ATP, NADPH, O2

Front 52

a respiration reaction which can proceed without oxygen is called

Back 52

anaerobic

Front 53

chloroplasts contain disk-like membranous sacs arranged in stacks. the stacks are called

Back 53

grana

Front 54

for each molecule of glucose converted to pyruvic acid:

Back 54

2 molecules are used and 4 are produced

Front 55

chlorophyll reflects which color of light

Back 55

green

Front 56

the final hydrogen acceptor in the noncyclic pathway of ATP (photosystem 2) formation is

Back 56

NADP+

Front 57

photoautotrophs that use water as a source of electrons:

Back 57

increase the concentration of oxygen in the atmosphere

Front 58

the variety of chlorophyll present in all green plants and required directly in photolysis (oxygen release)

Back 58

chlorophyll a

Front 59

outside the body, sugar can catch fire and burn in an exergoic reaction. inside the body, we also talk about burning sugar in an exergonic reaction, BUT it NEVER catches a body on fire. why not?

Back 59

when sugar is lit on fire, all of the bonds are broken at once. when the body breaks down sugar, enzymes break down one bond at a time

Front 60

organisms taht derive their chemical energy from the process of chemosynthesis (without light ever) may be found:

Back 60

deep ocean rifts

Front 61

the process by which carbon dioxide is removed from the air and attached to organic molecules is called

Back 61

carbon dioxide fixation or reduction

Front 62

cyclic photophosphorylation is called cyclic because

Back 62

an electron leaving a chlorophyll molecule returns to it

Front 63

the first event of photosynthesis is the

Back 63

exciting of an electron from chlorophyll

Front 64

which is a waste product of photosynthesis that is required for respiration?

Back 64

oxygen

Front 65

we often speak of "limiting factors" in biology; that is, conditions or sunstances which limit the processes of biological system by absence or insuffienient amount. which of the following "factors" would not limit photosynthesis by suddenly disappearing?

Back 65

free oxygen

Front 66

which of the following statements are true of pigments?

Back 66

-they reflect some photons
-the absorb photons of specific colors
-the absorb photons of specific wavelengths
-the absorb some photons
-(all of the above)

Front 67

plants need which of the following to carry on photosynthesis?

Back 67

carbon dioxide and water

Front 68

photosystems are mainly

Back 68

light-trapping molecules or pigment groups

Front 69

what is the source of energy that provides the boost for electrons during photosynthesis?

Back 69

light energy or photons