Enzyme Classes

Question 1

Name the enzyme classes

Answer 1

Oxido-reductases
Transferases
Hydrolases
Lysases
Isomerases
Ligase
(Ribozymes)

Question 2

The reaction of lactate to pyruvate occurs in the ____

Answer 2

Liver

Question 3

Coenzyme for lactate -> pyruvate

Answer 3

NAD+ -> NADH + H+

Question 4

What enzyme converts lactate to pyruvate, or pyruvate to lactate?

Answer 4

Lactate dehydrogenase (LDH)

Question 5

The reaction of pyruvate to lactate occurs in ____

Answer 5

Muscle & RBC

Question 6

What enzyme converts succinate to fumarate?

Answer 6

Succinate dehydrogenase

Question 7

Succinate is converted to fumarate in ____

Answer 7

Kreb’s cycle (mitochondria)

Question 8

What is the coenzyme for the reaction succinate to fumarate?

Answer 8

FAD -> FADH2

Question 9

What is the coenzyme for the reaction of retinal to retinol?

Answer 9

NADPH + H+ -> NADP+

Question 10

What is the enzyme that converts retinal to retinol?

Answer 10

Retinaldehyde reductase

Question 11

Retinal is converted to retinol in the ____

Answer 11

Liver

Question 12

What is the enzyme for pyruvate to acetyl CoA?

Answer 12

Pyruvate dehydrogenase

Question 13

What is the coenzyme for pyruvate to acetyl CoA?

Answer 13

TPP
NAD+ -> NADH + H+
Coenzyme A

Question 14

Pyruvate is converted to acetyl CoA in the ____

Answer 14

Mitochondria

Question 15

What is the coenzyme for the reaction pyruvate + glutamate -> alanine + alpha ketoglutarate

Answer 15

Pyridoxal 5 phosphate

Question 16

What is the enzyme for the reaction pyruvate + glutamate -> alanine + alpha ketoglutarate

Answer 16

SGPT
Serum Glutamate Pyruvate Transaminase

AKA:
ALT
Alanine transaminase

Question 17

The reaction pyruvate + glutamate -> alanine + alpha ketoglutarate occurs in ____

Answer 17

Muscle

Question 18

What is the coenzyme for the reaction alanine + alpha ketoglutarate -> pyruvate + glutamate

Answer 18

Pyridoxal 5 phosphate

Question 19

What is the enzyme for the reaction alanine + alpha ketoglutarate -> pyruvate + glutamate

Answer 19

Serum Glutamate Pyruvate Transaminase (SGPT)

AKA:
Alanine transaminase (ALT)

Question 20

The reaction alanine + alpha ketoglutarate -> pyruvate + glutamate occurs in the ____

Answer 20

Liver

Question 21

What is the coenzyme for the reaction creatine -> creatine P?

Answer 21

ATP -> ADP

Question 22

What is the enzyme for the reaction creatine -> creatine P?

Answer 22

Creatine kinase

Question 23

The reaction creatine -> creatine P occurs in ____

Answer 23

Muscle

Question 24

What is the coenzyme for the reaction glucose 6P -> glucose?

Answer 24

H2O

Question 25

What is the enzyme for the reaction **glucose 6P -> glucose**?

Answer 25

Glucose 6 Phosphatase

Question 26

The reaction **glucose 6P -> glucose** occurs in the ____

Answer 26

Liver

Question 27

What class of enzymes are digestive enzymes?

Answer 27

Hydrolases

Question 28

What do transaminases transfer?

Answer 28

Amino group

Question 29

What do kinases transfer?

Answer 29

High energy P

Question 30

What class of enzymes is anhydrase?

Answer 30

Lyases

Question 31

What class of enzymes are hydroxylases?

Answer 31

Lyases

Question 32

What is the coenzyme for the reaction **CO2 + H2O -> H2CO3**?

Answer 32

Zinc

Question 33

What is the enzyme for the reaction **CO2 + H2O -> H2CO3**?

Answer 33

Carbonic anhydrase

Question 34

Where does the reaction **CO2 + H2O -> H2CO3** occur?

Answer 34

Red blood cell in tissues

Question 35

Where does the reaction **H2CO3 -> CO2 + H2O** occur?

Answer 35

Red blood cells in lung

Question 36

What is the coenzyme for the reaction **proline + OH -> hydroxyproline**?

Answer 36

Reduced form of vitamin C (needs bioflavonoids)

Question 37

What is the enzyme for the reaction **proline + OH -> hydroxyproline**?

Answer 37

Prolyl hydroxylase

Question 38

Where does the reaction **proline + OH -> hydroxyproline** occur?

Answer 38

Collagen

Question 39

What is the coenzyme for the reaction **lysine + OH -> hydroxylysine**?

Answer 39

Reduced form of vitamin C

Question 40

What is the enzyme for the reaction **ketose <-> aldose**?

Answer 40

Glyceraldehyde 3P <-> DHAP Glucose <-> fructose

Question 41

Where does the reaction **ketose <-> aldose** occur?

Answer 41

RBCs & liver

Question 42

What enzyme class is glyceraldehyde 3P <-> DHAP and Glucose <-> fructose?

Answer 42

Isomerase

Question 43

What is the coenzyme for the reaction **pyruvate + CO2 -> oxaloacetate**?

Answer 43

Carboxybiotin & ATP

Question 44

What is the enzyme for the reaction **pyruvate + CO2 -> oxaloacetate**?

Answer 44

Pyruvate carboxylase

Question 45

Where does the reaction **pyruvate + CO2 -> oxaloacetate** occur?

Answer 45

Mitochondria Liver

Question 46

Ribozymes are not ____

Answer 46

Proteins

Question 47

Where do exon splicing events occur?

Answer 47

Nucleus (ribozymes)