quiz 8B Flashcards Preview

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Flashcards in quiz 8B Deck (61)
1

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

lyases

2

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

isomerase

3

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

Oxidoreductases

4

phosphoglucomutase

isomerase

5

lactic dehydrogenase

oxidoreductases

6

phosphofructokinase

transferases

7

maltase

hydrolases

8

citric acid synthetase

ligase

9

cis 2-pentene

to

trans- 2 pentene

isomerase

10

NAD/Enzyme

oxidoreductases

11

CH3CH2 (C=O) OCH3
to propanoic acid and methanol

hydrolases

12

oxaloacetate and acetyl Co-A to citric acid

ligase

13

a tripeptide to 3 seperate amino acids

hydrolases

14

alanine transaminase

transferases

15

glucose-6-phosphate

to

fructose-6- phosphate

isomerase

16

acetoacetate decaroxylase

lyases

17

which of the following protein is replaced the most often

enzymes

18

replaced the least often

collagen

19

a large pH change will denature a protein
which type of interaction is most affected

salt bridges

20

which enzyme is the most specific
a. lipase
b. peptidase
c. sucrase
d. esterase

sucrase

21

TRUE concerning plasma proteins

they are mainly made in the liver

22

aldosterone

steroid hormone

23

glucagon

protein hormone

24

keratin

neither

25

can slide right through the cell membrane

steroid hormone

26

takes minutes to affect the cell

protein hormone

27

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

steroid hormone
protein hormone

28

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

protein hormone

29

if enzymes turnover rate is very low it is very efficient

false

30

enzymes and substrates are usually held together by disulfide bonds

false

31

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

false

32

all enzymes can be affected by substrate saturation

true

33

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

false

34

all proteins have a quaternary structure

false

35

all enzymes are globular proteins

true

36

proteins are most soluble at their isoelectric point

flase

37

bacteria in milk will cause the milk to become more acidic

true

38

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

true

39

what fibrous protein has a triple helix structure

collagen

40

protein is found in muscle fiber

myosin
actin

41

protein found in artery walls and ligaments

elastin

42

found in bones and connective tissue

collagen

43

protein in silk

fibroin

44

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

serum albumins

45

what is milk "curds" which has precipitated out

casein

46

most abundant protein in the human body

collagen

47

protein found in nails, hoofs, hair

keratin

48

bacteria in milk can convert the lactose into what compound

lactic acid

49

what vitamin is converted into NAD or NADH

niacin

50

what vitamin is converted into coenzyme A

pantothenic acid

51

what vitamin is converted into the FAD

riboflavin

52

what vitamin is needed for collagen synthesis

vitamin C

53

what vitamin is converted into TPP

thiamine

54

scurvy is caused by the deficiency of what vitamin

vitamin C

55

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

turnover rate

56

specific area on the enzyme where the chemical reaction takes place

catalytic site

57

specific area on the enzyme where the substrate binds

contact site

58

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

apoenzyme

59

what is the cofactors plus the protein part called

holoenzyme

60

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

coenzyme

61

enzyme found in tears and saliva that kills invading bacteria

lysozymes