Chapter 6 & 7 Flashcards Preview

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Flashcards in Chapter 6 & 7 Deck (75):
1

what just happened when a green plant gives off oxygen

water molecules split

2

what can you do to the yeast

add to warm "liquid" with a food source

3

when does yeast grow better

when it's warm

4

plants and animals exchange materials through the process of

photosynthesis and cellular respiration

5

oxidated respiration follows glycolysis when

oxygen is available

6

how many crops are used by humans

150

7

biosphere

the regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms

8

almost oxygen in the atmosphere is

photosynthesis

9

carbon dioxide is used by

plants

10

what does mold not carry on

photosynthesis

11

ATP is a high energy carrier of

chlorophyll

12

needed for photosynthesis

carbon dioxide, water

13

after ATP is used over, it drops to

ADP

14

a fuel derived directly from living matter (crops- corn, oil)

biofuel

15

process that enables cells to produce energy anaerobically

fermentation

16

most important energy-storing compound

ATP

17

photosynthetic reactions that use the energy of sunlight and convert it to the energy in chemical bonds

light

18

word that means glucose breaking

glycolysis

19

photosynthetic reactions that can be carried out in the absence of light

dark

20

which process is anaerobic

glycolysis

21

an experiment that showed that part of a growing plant's mass comes from water was performed by

Van Helmont

22

photosynthesis produces

glucose

23

in respiration, the final electron acceptor is

oxygen

24

which of these is produced by the dark reactions

PGAL

25

type of pigment found in green plants is

chlorophyll

26

which of these is not produced int he light reactions

glucose

27

in the light reactions of photosynthesis, the energy in sunlight is

captured and used to make ATP and NADPH

28

because they can't make their own food, heterotrophs

rely on the food-making ability of green plants

29

the dark reactions occur outside the

photosynthetic membrane

30

ATP is formed when enzymes move hydrogen ions across a membrane to an area of

lesser concentration

31

what is an aerobic process that breaks down food molecules to produce energy

cellular respiration

32

when there is no oxygen present, yeast cells break down glucose to form

alcohol and carbon dioxide

33

approximately 4 molecules of ATP are formed during

glycolysis

34

what energy is converted to chemical energy in photosynthesis

light

35

what are two compounds needed for photosynthesis

water and carbon dioxide

36

photosynthesis results in the production of the simple sugar

glucose and free oxygen

37

light energy converts to chemical energy; the photo part of photosynthesis; water molecules split, oxygen given off

light energy

38

of the following molecules vital to life on earth, which one is released during the light reactions

O2

39

of the following, the one not produced during the light reaction is

C6H12O6

40

the first part of the Calvin cycle involves

carbon fixation

41

The Calvin cycle reactions take place in the

stroma

42

the overall effect of the Calvin cycle is that CO2 combines with hydrogen to form

simple sugars

43

of the following, what is not needed for the calvin cycle to occur is

O2

44

photosynthesis and cellular respiration are said to form a continuous cycle because

the products of one process are the starting materials for the other

45

photosynthesis and cellular respiration are said to form a continuous cycle because

the products of one process are the starting materials for the other

46

which of the following is a use for sugars produced in a plant during photosynthesis

conversion to ATP by cellular respiration, manufacture into protein, lipids, and nucleic acids, and transportation to starch for immediate use in carrying out photosynthesis

47

energy flows through food chain from

a producer to one or more consumers

48

when water molecules are split to produce the electrons needed to replace those lost by photosystem II during photosynthesis,

hydrogen is produced

49

carbon fixation in the Calvin Cycle requires the following products of light reactions

ATP and NADPH

50

which of the following environment factors influences the rate of photosynthesis

light intensity, carbon dioxide concentration, temperature

51

because glycolysis used two ATPs to get started, for each molecule of glucose entering the pathway there is a net gain of

two ATPs

52

oxidative respiration follows glycolysis when ____ is available

oxygen

53

which of the following molecules has reducing power

NADPH

54

which of the following is not a fuel used for cellular respiration

water

55

key reactions that occur early in glycolysis and the Krebs cycle can be controlled by feedback inhibition because these reactions are catalyzed by enzymes with a regulatory allosteric site that is the same shape as

ATP

56

CH2O + O2 (enzymes) ----> CO2 + H2O + 36 ATP
this equation shows that

the complete oxidation of glucose yields at least 36 ATP molecules

57

true or false
photosynthesis is the reverse of cellular respiration

true

58

true or false
about 150 plants are cultivated as crops for use as food by humans

true

59

true or false
in the third stage of photosynthesis, ATP and NADPH power the synthesis of organic molecules using oxygen from water

false
The third stage of photosynthesis that does not require light directly, also called the Calvin cycle, during which organic molecules are manufactured from atmospheric CO2

60

true or false
a molecule that contains atoms enabling it to reflect light is called a pigment

false

61

true or false
yellow and organ plant pigments are called carotenoids

true

62

true or false
almost every oxygen molecule in the air was produced by photosynthesis

true

63

true or false
the rate of photosynthesis increases as the concentration of hydrogen gas increases

false
hydrogen gas is not involved

64

true or false
metabolic processes that require oxygen are called aerobic

true

65

true or false
oxidative respiration is an aerobic process

true

66

true or false
electron transport chains help move excited electrons along in photosystem II clusters

true

67

true or false
some of the glucose required for cellular respiration is obtained by eating cellulose

false
Humans don't have the enzyme needed to break cellulose to its glucose components so we can never obtain glucose from cellulose; we aren't able to digest cellulose

68

energy is stored in organic molecules made by linking ____ atoms together

carbon

69

plants convert excess sugar to ____ for storage

starch

70

the complete range of radiant energy forms is called the ________

electromagnetic spectrum

71

during photosynthesis, light energy is converted into _____ energy

chemical

72

as proton leave a thylakoid via ATP-synthetase, _____ is generated

ATP

73

glycolysis is a biochemical pathway that converts a six-carbon glucose molecule to two-carbon molecules of ____

Pryuvate

74

during oxidative respiration, pyruvate is first converted to _______ which enters the Krebs cycle

acetyl CoA

75

a system of __________ enables cells to control the rate of cellular respiration

feedback inhibition