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Bio 101 Glendale college > exam 2 > Flashcards

exam 2 Flashcards

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1
Q

which of the following processes produces O2

A Calvin cycle
B noncyclic electron transport
C ciyclic electron transport 
A and B 
A B and C
A

B and C

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2
Q

ATP and NADHPH are produced in the light reaction

A

true

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3
Q

electrons are transferred from photosystem I to photosystem II during the light reaction

A

false

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4
Q

Before S phase each chromosome contains only one double strand DNA molecule

A

true

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5
Q

when do chromosomes line up on the Equator in mitosis

A

Metaphase

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6
Q

when do chromosomes become visible during Mitosis

A

PROPHASE

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7
Q

WHEN DOES DNA SYNTHESIS TAKE PLACE IN EUKARYOTES

A

S PHASE

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8
Q

WHICH OF THE FOLLOWING PROCESS MAKES NADH

A

GLYCOLYSIS AND CITIC ACID CYCLE

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9
Q

WHICH OF THE FOLLOWING TYPES OF PROTEIN THAT DNA WRAPS AROUNDTO FORM “BEADS ON A STRING”

A

HISTONES

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10
Q

WHAT ENZYME CATALYZES THE CONVERSION OF GLUCOSE TO GLUCOSE-6- PHOSPHATE

A

HEXOKINASE

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11
Q

WHAT ENZUME CATALYZES THE CONVERSION OF FRUCTOSE-1, 6 BISPHOSPHATE TO DIHYDROXYACETONE PHOSPHATE AND GLYCERALDEHYDE 3- PHOSPHATE

A

ALDOLASR

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12
Q

TRIOSE PHOSPHATE DEHYDROGENASE CATALYZES THE CONVERSION OF GLYCERALDEHYDE 3 PHOSPHATE

A

1, 3 BISPHOSPHOGLYCERATE

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13
Q

HOW IS ATP SYNTHESIZED DURING GLYCOLOSIS

A

SUBSTRATE LEVEL PHOSPORYLATION

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14
Q

GLYCOLYSIS IS AN AEROBIC REACTION

A

FALES

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15
Q

WHAT KINDS OF CELLS ARE CAPABLE OF GLYCOLYSIS

A

ALL KINDS OF CELLS

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16
Q

HOW DO PROKARYOTIC CELLS DIVIDE

A

MITOSIS AND MEIOSIS

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17
Q

WHICH OF THE FOLLOWING ENZYMES IS MOST RESPONSIBLE REGULATING GLYCOLYSIS

A

PHOSPFRUCTOKINASE

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18
Q

GLYCOLYSIS OCCURS IN THE

A

CYTOPLASM

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19
Q

GLYCOLYSIS TRSULTS IN THE NET SYNTESIS OF _____ ATP PER MOLECULE OF GLUCOSE

A

2

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20
Q

WHAT IS THE PRODUCT OF THE REACTION CATALYZED BY RUBISCO

A

2-PHOSPHOGLYCERAATE

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21
Q

WHICH OF FOLLOWING ENZYMES IS THE MAIN CONTROL POINT FOR THE CITRIC ACID CYCLE

A

ISOCITRTE DEHYDROGENASE

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22
Q

THE ROLE OF OXYGEN GAS IN OUR CELLS IS TO

A

ACCEPT ELECTRONS FROM THE ELCHAINECTRON TRANSFER

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23
Q

THE ELECTRON TRANSPORT CHAIN OF CELLULAR RESPIRATION

A

INCLUDES INTEGRAL MEMBRANE PROTEINS

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24
Q

IN MEIOSIS

A

HOMOLOGUOUS CHROMOSOMES SEPERATE FROM ONE ANOTHER IN ANAPHASE I

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25
Q

WHATE KIND OF CELLS DIVIDE MY MITOSIS

A

EUCARYOTIC CELLS

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26
Q

MEIOSIS PRODUCES CELLS WITH GENETIC VARIATION WHAT IS THE SOURCE OF THIS VARIATION

A

CROSSING OVER AND INDEPENDENT ASSORTMENT

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27
Q

WHERE DOES THE CALVIN CYCLE TAKE PLACE

A

in the stroma

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28
Q

in noncyclic photosynthetic electron transport water is used to

A

reduce chorophyll

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29
Q

which of the following statements about the cyclic electron transport is FALSE

A CET results in synthesis of ATP
B CET occurs when the ratio of NADPH/NADP+ in the chloroplast is high
Cit uses photosystem II only
D no NADPH is synthesized during CET
E during cyclic ELT electrons are passed from ferredoxin to plastoquinne

A

C does not only use photosystem II false

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30
Q

which statement about chlorophylls is not true
A they absorb light near both ends of the visible spectrum
B they can accept energy from other pigments such as carotenoids
C excited chlorophyll can either reduce another substance or fluoresce
D excited chlorophyll may be an oxidizing agent
E they contain magnesium

A

D excited chlorophyll may not be an oxidizing agent

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31
Q

what occurs on the thylakoid membrane

A

light reaction of photosynthesis

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32
Q

what kinds of organisms can do photosynthesis

A

plants and some bacteria and some protasia

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33
Q

you measure the rate of photosynthesis in a plant as a function of the wavelength of light the plot of this experiment is called

A

an action spectrum an action

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34
Q

where does the citric acid cycle occur in eukaryotes

A

matrix of mitochondria

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35
Q

what happens when a molecule absorbs light

A

a proton is a proton is boosted to a higher energy level

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36
Q

the calvin cycle produces a 3 carbon molecule that leaves the cycle and may be used to make

A

glyceraldehade 3-phhosphate

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37
Q

what is the purpose of fermentation

A

it regulated NAD+

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38
Q

ATP sythase catalyzes a hemical reaction that requires energy what is the immediate source used by ATP

A

Proton Gradient

39
Q

where is ATP Synthase Located in cells

A

Inner membrane of the mitchondria and thylakoid membrane

40
Q

which parts of the cellular respiration uses oxygen

A

Electron transport chain

41
Q

how many ATP molecules can be made per molecule of glucose in cellular respiration

A

~32

42
Q

which of the following molecules can be used in cellularr respiration

A

Polysaccharides fats and proteins

43
Q

the energy given up by electrons as they move through the electron transport chain is used to

A

pump protons across a membrane

44
Q

what is the main function of cellular respiration

A

Making ATP

45
Q

in human muscle cells the fermentation process produces

A

lactic acid

46
Q

when does cytokinesis usually begin

A

duriictophase

47
Q 
which of the following is not a function of mitosis
A production for gametes 
B cell replacement 
C growth 
D repair damage organs
E asexual reposuction
A

production of gametes

48
Q

how many chromosomes would e found in normal human somatic cell during interphase

A

46

49
Q

before a cell can leave G1 to go to S of the cell cycle

A

RB protein must be phosphorylated by Cdk

50
Q

which cyclins are required for phosorylation of RB protein

A

Cyclins D and E

51
Q

when does crossing over occur

A

prophase I

52
Q

after receiving a signal some cells activate a genetic program that results in cells death what is this process called

A

apoptosis

53
Q

the special cells that produce gametes in animals are called

A

germ cells

54
Q

during meiosis sister chromatids of each chromosome move apart during

A

anaphase II

55
Q

the spindle is made up of _____ and attatvhes to the _____

A

microtubules , kinetochores

56
Q

sometimes chromosomes fail to sepeerate properly during meiosis what is this process called

A

nondisjunction

57
Q

and aneuploid cell

A

can be detected by examining the karyotype

58
Q

pyruvate oxidation is an important step in cellular respiration what is the product

A

acetyl CoA carbon dioxide and NADH

59
Q

in electron transport chain in the mitochondria what does NADH donate electrons to

A

NADH-Q reduction

60
Q

in the citric acid cycle what molecule accepts an acetyl group from acetyl -CoA

A

ocolacetate

61
Q

what kind of sexual life cycle do most animals have

A

diplontic

62
Q

a special molecule of chlorophyll is found at the reaction center of photosynthesis

A

P680

63
Q

what kind of sexual life cycle do most plants have

A

alternation of generations

64
Q

photo synthesis in green plants occurs only during the day cellular respiration in plants occurs

A

all the time

65
Q

which of the rolling process produces NADH

A

glycolysis citric acid cycle and pyruvate oxidation

66
Q

which of the following are proceded by the ccvliv electron transport in the chloroplast

A

ATP oxygen and NADPH

67
Q

the oxygen that is produces during photosynesis

A

is made my photosystem II

68
Q

where does the calvin cycle take place in eukaryotes

A

on the thylakoyd membrane

69
Q

some animals use their mitochondria to make heat instead of ATP

A

they have a special protein in the membrane that allows protons to diffuse across a membrane

70
Q

what happens when a molecule absorbs light

A

a proton is boosted to a higher energy level

71
Q

when purvate is converted to lactate what other products are formed

A

NAD+

72
Q

the calvin cycle produces a 3 carbon molecule that leaves the cycle and may be used to make glucose what is this molecule called

A

glyceraldehyde 3 phospate

73
Q

ATP synthase catalyzes a chemical reaction that requires energy what is the immediate energy source used by ATP synthase

A

proton gradient

74
Q

fermentation in eukaryotic cells occurs in the

A

cytoplasm

75
Q

in the mitochondria electron transport chain what donates electrons to oxygen directly

A

cytochrome c oxide

76
Q

oxalocetate accepts an acetyl group from acetyl- CoA what molecule will be produced

A

citrate

77
Q

which of the following are products of pyruvate oxidation

A carbon dioxide
B NADH
C acetyl CoA

A

all of the above

78
Q

which of the following uses oxygen

A CITRIC ACID CYCLE
B electron transport
C glycolysis

A

electron transport chain

79
Q

how many ATP molecules can be made per molecule of glucose by glycolysis and cellular respiration

A

~32

80
Q

in human muscle cells the fermentation processes produces

A

lactic acid

81
Q

we learned about an expirment where a cell in s phase was fused to a cell in G1 phase of the cell cycle what is this

A

the g1 phase nucleus began DNA replication

82
Q

infects a cell and inactivates retinoblastoma protein what will happen next

A

the cell will leave G1 and got to s phase

83
Q

how do a prokaryotic cells divide

A

binary fission

84
Q

what enzyme is the main regulator of the citric acid cycle

A

isocitriate dehyogenase

85
Q

what part of the electron transport chain accepts from both succinate dehydrogenase and NADH-Q reductase

A

ubiquinone

86
Q

reaction that require or consume free energy are called

A

endergonic reactions

87
Q

the delta G of a reaction depends on whether an enzyme is present or not

A

false

88
Q

how does the presence of an enzyme change the activation energy of a chemical reaction

A

activation energy in decreased

89
Q

an inhibitor binds noncovalently to the active site of a enzyme what kind of inhibitor is this

A

competitive

90
Q

in a chemical reaction

A

the entropy change depends on the activation energy

91
Q

H=G+TS T is temp what are H and S

A

H is enthalpy and is is entropy

92
Q

according to the second law of thermodynamics what happenes when energy is converted from one form to another

A

the amount of usable energy decreases

93
Q

some enzymes will not function properly without the binding of inorganic ions these icons are called

A

cofactors

Bio 101 Glendale college (7 decks)

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