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Biochem > quiz 8B > Flashcards

quiz 8B Flashcards

1
Q

CH3(C=O) COOH
to
CH3CH=O & CO2

A

lyases

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2
Q

CH2OH HC=O
C=O CH OH
HCCOH CH OH
CH2OH CH2OH

A

isomerase

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3
Q

CH3CH(OH) CH3
to
CH3(CH=O) CH3

A

Oxidoreductases

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4
Q

phosphoglucomutase

A

isomerase

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5
Q

lactic dehydrogenase

A

oxidoreductases

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6
Q

phosphofructokinase

A

transferases

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7
Q

maltase

A

hydrolases

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8
Q

citric acid synthetase

A

ligase

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9
Q

cis 2-pentene

to

trans- 2 pentene

A

isomerase

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10
Q

NAD/Enzyme

A

oxidoreductases

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11
Q

CH3CH2 (C=O) OCH3

to propanoic acid and methanol

A

hydrolases

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12
Q

oxaloacetate and acetyl Co-A to citric acid

A

ligase

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13
Q

a tripeptide to 3 seperate amino acids

A

hydrolases

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14
Q

alanine transaminase

A

transferases

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15
Q

glucose-6-phosphate

to

fructose-6- phosphate

A

isomerase

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16
Q

acetoacetate decaroxylase

A

lyases

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17
Q

which of the following protein is replaced the most often

A

enzymes

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18
Q

replaced the least often

A

collagen

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19
Q

a large pH change will denature a protein

which type of interaction is most affected

A

salt bridges

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20
Q

which enzyme is the most specific

a. lipase
b. peptidase
c. sucrase
d. esterase

A

sucrase

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21
Q

TRUE concerning plasma proteins

A

they are mainly made in the liver

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22
Q

aldosterone

A

steroid hormone

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23
Q

glucagon

A

protein hormone

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24
Q

keratin

A

neither

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25
Q

can slide right through the cell membrane

A

steroid hormone

26
Q

takes minutes to affect the cell

A

protein hormone

27
Q

chemical messagers that are produced one place in the body and affect other parts of the body

A

steroid hormone

protein hormone

28
Q

attaches to a receptor site on the outside of the target cell

A

protein hormone

29
Q

if enzymes turnover rate is very low it is very efficient

A

false

30
Q

enzymes and substrates are usually held together by disulfide bonds

A

false

31
Q

hormones and enzymes can sometimes be proteins and sometimes non-proteins

A

false

32
Q

all enzymes can be affected by substrate saturation

A

true

33
Q

doubling the concentration of the substrate will ALWAYS double the rate of reaction

A

false

34
Q

all proteins have a quaternary structure

A

false

35
Q

all enzymes are globular proteins

A

true

36
Q

proteins are most soluble at their isoelectric point

A

flase

37
Q

bacteria in milk will cause the milk to become more acidic

A

true

38
Q

denaturing with heavy metals affects the salt bridges in the globular protein

A

true

39
Q

what fibrous protein has a triple helix structure

A

collagen

40
Q

protein is found in muscle fiber

A

myosin

actin

41
Q

protein found in artery walls and ligaments

A

elastin

42
Q

found in bones and connective tissue

A

collagen

43
Q

protein in silk

A

fibroin

44
Q

what blood protein is used to transport fatty acids and to maintain osmotic pressure

A

serum albumins

45
Q

what is milk “curds” which has precipitated out

A

casein

46
Q

most abundant protein in the human body

A

collagen

47
Q

protein found in nails, hoofs, hair

A

keratin

48
Q

bacteria in milk can convert the lactose into what compound

A

lactic acid

49
Q

what vitamin is converted into NAD or NADH

A

niacin

50
Q

what vitamin is converted into coenzyme A

A

pantothenic acid

51
Q

what vitamin is converted into the FAD

A

riboflavin

52
Q

what vitamin is needed for collagen synthesis

A

vitamin C

53
Q

what vitamin is converted into TPP

A

thiamine

54
Q

scurvy is caused by the deficiency of what vitamin

A

vitamin C

55
Q

the rate at which an enzyme will convert substrates to products is called

A

turnover rate

56
Q

specific area on the enzyme where the chemical reaction takes place

A

catalytic site

57
Q

specific area on the enzyme where the substrate binds

A

contact site

58
Q

the inactive protein part (without the cofactors) of an enzyme is called

A

apoenzyme

59
Q

what is the cofactors plus the protein part called

A

holoenzyme

60
Q

what is the cofactor that is organic but not a protein called

A

coenzyme

61
Q

enzyme found in tears and saliva that kills invading bacteria

A

lysozymes

Biochem (27 decks)

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