BioChem

Question 1

Which is not a regulatory enzyme of krebs?

Answer 1

succinate dehydrogenase (b/c it’s also in ETC)

Question 2

In conversion of Pyruvate → acetyl CoA via pyruvate dehydrogenase complex, classified as _______ reaction?

Answer 2

decarboxylation

Question 3

Starving, what state are you in?

Answer 3

Gluconeogenisis (making carb from non carb)

Question 4

Which A.A. = aromatic

Answer 4

Tryptophan

Question 5

Which A.A. aids in transportation of fatty acids into mitochondria?

Answer 5

methionine (b/c carnirine= lysine & methionine)

Question 6

What reaction is niacin involved in?

Answer 6

Oxidation/reduction

Question 7

B Vitamin in remetylization of homocysteine

Answer 7

B12 (or B9)

Question 8

What vitamin aids in conversion of ketoacid → amino acid

Answer 8

B6 (trans. amination)

Question 9

Insulin Binding →

Answer 9

chromium

Question 10

What binds to iron & is storage form of iron?

Answer 10

Feritin

Question 11

Good Vit. C=

Answer 11

Fruits / Veggies

Question 12

What fatty acid can body synthesize?

Answer 12

palmitic acid

Question 13

What helps absorb iron?

Answer 13

Vitamin C

Question 14

Glucose + ______ = Lactose

Answer 14

Galactose

Question 15

Which disacharide contains A1-6 linkage

Answer 15

isomaltose

Question 16

Lipoprotein VLDL responsible for transport of _______ ?

VLDL = never dietary
LDL = Leave the liver = Bad
HDL = carries cholesterol

Answer 16

Endogenous triglycerides

Question 17

LDL is responsible for?

Answer 17

Endogenous Cholesterol

Question 18

What doesn’t contribute to cholesterol in obese

Answer 18

no answer written down..????

Question 19

Which is the DNA complimentary strand for:

Answer 19

3’ TACGATGC 5’ (at the golf course)

Question 20

rate limiting enzyme for glycolysis =

Answer 20

PPK

Question 21

comitted step in glycolysis =

Answer 21

no answer written down..????

Question 22

What step in krebs doesn’t produce NADH?

Answer 22

Succinate → Fumarate

Question 23

Where does glycolysis occur?

Answer 23

Cytosol

Question 24

Alpha keto form of which A.A. = intermediate in krebs?

Answer 24

Glutamate

Question 25

What/s formed in succinate → fumerate

Answer 25

FADH 2

Question 26

What contains sulfur & has antibacterial, viral, fungal properties?

Answer 26

Garlic

Question 27

What isn't an example of anaplerotic reaction? | anaplerotic means filling up

Answer 27

Glucose → G6P (Glycolysis)

Question 28

Following is example of a _______ reaction = | 2RCo2H→ (RCO)20+H2O

Answer 28

Dehydration

Question 29

Cereals are low in

Answer 29

Lysine

Question 30

Which complex of electron transport system contains copper?

Answer 30

Cytochrome C Oxidase

Question 31

Which enzyme controlled through product 'inhibitory' allows skeletal muscles cells to accumulate glucose ? inhibitory = rate limiting

Answer 31

PPK (phosphofruscto kinase)

Question 32

Which of these actions occur during a lanine cycle?

Answer 32

Pyruvate is converted to glucose in the liver

Question 33

The malic enzyme catalyzes conversion of malate to pyruvate and provides [which substance used in F.A biosynthesis]?

Answer 33

acetyl CoA

Question 34

Richest source of Vit. E =

Answer 34

Oil (vegetable oil)

Question 35

Hydrolysis of amylopectin by amylase →

Answer 35

Amylose

Question 36

Which hormone enhances activity of glycogen phosphorylase in skeletal muscle?

Answer 36

epinepurine (or Glucagon)

Question 37

Glucose precursors derived from _____?

Answer 37

Amino Acids

Question 38

Principle carb produced by action of alpha-amylase on dietary starch

Answer 38

maltose

Question 39

A.A. derived from proteins are catabolized to products which directly enter the ______ for further oxidation to Co2

Answer 39

tricarboxylic acid cycle (TCA)

Question 40

Enzymes that catylize breakdown of maltose from ______?

Answer 40

Small intestine

Question 41

Which type of F.A is in olive oil?

Answer 41

monounsaturated

Question 42

A lack of lipoprotein lipase results in ______?

Answer 42

elevated chylomicron following fatty meal

Question 43

Phosphate groups of ATP are linked by _____ bonds?

Answer 43

Phosphoanhydride

Question 44

Triacylglycerols transported from intestinal cells to adipose cells within ______?

Answer 44

Chylomicron

Question 45

What hormone ↑ many metabolic processes by ↑

Answer 45

Epinephrine (or Glucagon)

Question 46

Dietary supplementation of therapeutic folic acid maybe be detrimental because..

Answer 46

Can mask B12 deficiency

Question 47

What compound is simple sugar?

Answer 47

dihydroxyacetone

Question 48

What vitamin made by intestinal flora?

Answer 48

Vitamin K

Question 49

What compound catylizes formation of GTP in TCA?

Answer 49

Succinate thiokinase

Question 50

What is characteristic of myoglobulin?

Answer 50

It's a single polypeptide

Question 51

Toxicity of many pesticides result from ________ enzyme inhibition?

Answer 51

irreversible

Question 52

Which of these is C-4 epimere of Glucose?

Answer 52

Galactose [*manose is C-2 epimere to Glucose]

Question 53

Oxidation of what = ketone bodies?

Answer 53

Fatty Acids

Question 54

Good source of Omega 3 =

Answer 54

Salmon

Question 55

Vitamin K = essential to the synthesis of these substances?

Answer 55

Prothrombin

Question 56

Dietary lipids converted to ______ by pancreatic lipase

Answer 56

Lipoprotein

Question 57

Which mineral is required for activity of most glycolytic enzymes?

Answer 57

Sulfur (B vitamin [thiamine, biotin])

Question 58

Glucagon activates which enzyme in plasma membrane of hepatocytes?

Answer 58

Adenyl cyclase

Question 59

Bonding between F.A. & glycerol in a Z-monacyl-Glycerol is best described as what?

Answer 59

Ester linkage

Question 60

When equilibrium is Pos. = 1 then free energy charge is (-)

Answer 60

-1.36

Question 61

In TCA, isocitrate dehydrogenase converts to?

Answer 61

Alphaketoglutanate

Question 62

Which amino acid initiates protein synthesis in humans?

Answer 62

methionine

Question 63

What hormone affects anabolism / catabolism phase of protein metabolism?

Answer 63

Glucocorticoids (cortisol)

Question 64

Disacharide B1→ 4

Answer 64

Lactose

Question 65

Saturation levels of substrate concentration in an enzyme - catylized reaction cause progress..

Answer 65

Neg. cooperativity

Question 66

Tryptophan →

Answer 66

Niacin

Question 67

Coenzyme for oxidative decarboxylation processes

Answer 67

thiamine pyrophosphate (B1) (decarboxylation)

Question 68

Protein complementary allows vegan diet to supply sufficient amounts of ______?

Answer 68

Essential A.A.

Question 69

Enzyme that catylizes peptide bond formation during protein synth. @ ribosome

Answer 69

Peptidyl transferase

Question 70

1 carbon transfers during production of purine & pyrimidines are directly dependent upon?

Answer 70

Pyridoxine

Question 71

Primary function of Vitamin D is to regular absorption and metabolism of which mineral?

Answer 71

Calcium & Phosphorus

Question 72

Cholesterol is not a precursor of what?

Answer 72

Lecithin

Question 73

Which of these characterizes gout?

Answer 73

Purine overproduction

Question 74

Which is a spontaneous reaction?

Answer 74

Gibb's free energy is negative

Question 75

Bile acids contain carboxyl group in side chain that is bound in amide linkage with _____?

Answer 75

Taurine (constituent of bile)

Question 76

Arginase catalyzes conversion of arginine into _____ and urea?

Answer 76

Ornother (ArCo)