slow and fast skeletal muscle fibres

Question 1

Which type of muscle fibre contracts slowly?

Answer 1

Slow muscle fibres

Question 2

Which type of muscle fibre contracts quickly?

Answer 2

Fast muscle fibres

Question 3

Which type of muscle fibre has many mitochondria per fibre?

Answer 3

Slow muscle fibres

Question 4

Which type of muscle fibre has few mitochondria per fibre?

Answer 4

Fast muscle fibre

Question 5

Which type of muscle fibre has energy released slowly through aerobic respiration?

Answer 5

Slow muscle fibres

Question 6

Which type of muscle fibre has energy released quickly through anaerobic respiration?

Answer 6

Fast muscle fibres

Question 7

Which type of muscle fibre has a low resistance to fatigue?

Answer 7

Fast muscle fibres

Question 8

Which type of muscle fibre has a higher resistance to fatigue?

Answer 8

Slow muscle fibres

Question 9

Which type of muscle fibre is good for endurance events?

Answer 9

Slow muscle fibres

Question 10

Which type of muscle fibre is good for short bursts of speed and power?

Answer 10

Fast muscle fibres

Question 11

Which type of muscle fibre has low concentrations of glycogen?

Answer 11

Slow muscle fibres

Question 12

Which type of muscle fibre has high concentrations of glycogen?

Answer 12

Fast muscle fibres

Question 13

Which type of muscle fibre is whitish in colour?

Answer 13

Fast muscle fibres

Question 14

Which type of muscle fibre is red in colour?

Answer 14

Slow muscle fibres

Question 15

Which type of muscle fibre has low concentrations of phosphocreatine?

Answer 15

Slow muscle fibres

Question 16

Which type of muscle fibres has high concentrations of phosphocreatine?

Answer 16

Fast muscle fibres

Question 17

What is needed during muscle contraction?

Answer 17

ATP

Question 18

What is ATP needed for?

Answer 18

To move myosin head which pulls actin, detach myosin, reabsorption of calcium ions

Question 19

What are the three ways ATP is produced in?

Answer 19

ATP-phosphocreatine system, anaerobic respiration, aerobic respiration

Question 20

Where is phosphocreatine stored?

Answer 20

In the muscle

Question 21

What is phosphocreatine used for?

Answer 21

A reserve supply of phosphate to combine with ADP to form ATP

Question 22

What is the equation for phosphocreatine and ADP?

Answer 22

Phosphocreatine + ADP → ATP + creatine

Question 23

What is the advantage of making ATP through phosphocreatine?

Answer 23

It’s very quick, it doesn’t produce lactic acid despite being anaerobic

Question 24

What are the disadvantages of using phosphocreatine?

Answer 24

Used up after a few seconds, not sustainable

Question 25

What happens during anaerobic respiration?

Answer 25

Produces ATP without oxygen but has side product of lactic acid

Question 26

What does lactic acid cause?

Answer 26

Fatigue

Question 27

When is anaerobic respiration more commonly done?

Answer 27

In shorter periods of exercise

Question 28

What is the disadvantage of anaerobic respiration compared to aerobic respiration?

Answer 28

1 molecule of ATP is produced in anaerobic compared to 36 in aerobic

Question 29

What is needed for aerobic respiration?

Answer 29

Oxygen

Question 30

What is aerobic respiration more commonly used in?

Answer 30

Long periods of low intensity exercise