Set 16 Enzymes and Hormones Flashcards Preview

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Flashcards in Set 16 Enzymes and Hormones Deck (34):
1

Most enzymes are:

proteins

2

Enzymes function:

speed up reactions

3

enzyme + cofactor =

holoenzyme

4

enzyme without cofactor:

apoenzyme

5

What regulates enzyme synthesis?

steroids

6

What is a zymogen?

protein that becomes an active enzyme when parts are removed

7

What is the allosteric site?

area on enzyme where a compound may bind and change rate of activity

8

When do enzymes reach maximum velocity?

when all binding sites are saturated

9

What is the function of a kinase?

transfers a phosphate

10

What is the function of an oxidoreductase?

move hydrogen (catabolic)

11

What is the function of NAD?

breaks molecules

12

What is the function of NADH?

builds molecules

13

What does the suffix "ine" mean?

AA derivative

14

What does the suffix "in" mean?

peptide

15

What does the suffix "one" mean?

streoid

16

What is the precursor to epinepherine?

tyrosine

17

What stimulates epinepherine?

pathways which produce energy

18

Where does insulin come from?

islets of langerhans

19

What makes insulin?

beta cells

20

What stimulates insulin?

energy storage pathways

21

What inhibits insulin?

hormone sensitive lipase

22

What stimulates glucagon?

glyconeogenesis

23

What is the function of glucagon?

releases glucose into the blodd

24

Where are steroid hormones produced?

adrenal cortex

25

What is the precursor for cholesterol?

steroid hormones

26

What is the function of glucocorticoids like cortisol?

promote gluconeogenesis, increase protein breakdown, and increase ketogenesis

27

What is the function of mineralcorticoids like aldosterone?

electrolyte balance, retention of Na, excretion of K, ammonia, and protons

28

RLE: glycolysis

PFK

29

RLE: gluconeogenesis

Glucose 1,6 bis-phosphates

30

RLE: Krebs cycle

Isocitrate dehydrogenase

31

RLE: HMP shunt (PPP cycle)

Glucose-6-phosphate dehydrogenase

32

RLE: fatty acid synthesis

Acetyl CoA carboxylase

33

RLE: beta oxidation

Carnitine acyltransferase I

34

RLE: urea cycle

Carbamoyl phosphate synthetase I