Muscles Biochemistry

Question 1

Contractile muscles proteins

Answer 1

Myosin

Actin

Question 2

Regulatory muscles proteins

Answer 2

Troponin

Tropomyosin

Question 3

Muscle twitch phases

Answer 3

Lag
Contraction
Relaxation

Question 4

Energy sources for muscles

Answer 4

Creatine phosphate
Anaerobic respiration
Aerobic respiration

Question 5

Creatine phosphate generates ATP for ………..

Answer 5

15 seconds

Question 6

What’s the enzyme that breaks creatine phosphate into creatine and ATP

Answer 6

Creatine kinase

Question 7

In the anerobic respiration, each glucose molecules produces ………….

Answer 7

Two ATP

Two pyruvic acid

Question 8

Anerobic respiration takes place in

Answer 8

Cytoplasm

Question 10

In the anerobic respiration, pyruvic acid could be converted to …………… if …………… not available

Answer 10

Lactic acid - oxygen

Question 11

……………. may contribute in pain and muscle fatigue

Answer 11

Lactic acid

Question 12

Oxygen debt in the anerobic respiration is used to convert …………… to ……………. in the ………………

Answer 12

Lactic acid | CO2 + H2O | liver

Question 13

Glucose lactate cycle is called

Answer 13

Cori cycle

Question 14

2 ADP molecules is converted into ………….. by …………….

Answer 14

ATP + AMP | myokinase

Question 15

Aerobic respiration is :

Answer 15

Breakdown of glucose or fatty acids in presence of oxygen to produce ATP + water + carbon dioxide

Question 16

Storage form of type I muscle fibers

Answer 16

Triglycerides and myoglobin

Question 17

Storage form of type II muscle fibers

Answer 17

Creatine phosphate and glycogen

Question 18

The enzyme that break glycogen into glucose

Answer 18

Myophosphorylate

Question 19

Metabolism in sprinters muscle fibers

Answer 19

Stored ATP > Creatine phosphate > glycogen

Question 20

Sustained exercise modulate the body to use ……….. over …………..

Answer 20

Fatty acids | Glucose

Question 21

Causes of muscle atrophy

Answer 21

Nonfunctioning neuromuscular junction

Lack of exercise and disuse

Question 22

Exercise can produce :

Answer 22

Hyperatrophy

Changes in capacity for ATP production

Question 23

Aerobic exercise produces

Answer 23

Increase in mitochondria
Increase in capillaries
Increase in endurance

Question 24

Strength exercise produce

Answer 24

Hypertrophy

Increase glycolytic activity

Question 25

Aerobic respiration takes place in

Answer 25

Start > cytoplasm

Rest > mitochondria