HHB 1.8 Energy Systems in Muscle Cells Quizs

What does the term oxygen debt mean?

• A temporary shortage of oxygen in muscle tissues due to vigorous exercise.

• Prolonged oxygen deprivation leading to muscle tissue damage

• The estimated deficit of oxygen at the beginning of an exercise session

Fast-twitch muscle fibres contract relatively ....................... compared to slow-twitch muscle fibres.

• quickly

• slowly

Fast-twitch muscle fibres can generate ATP through .......................... only

• glycolysis

• aerobic respiration

Where does the conversion of lactate back to pyruvate and glucose take place?

• Liver

• Pancreas

• Muscles

• Pituitary gland

............................ muscle fibres are useful for activities such as sprinting or weightlifting.

• slow-twitch

• fast-twitch

Fast-twitch muscle fibres have a .................. blood supply compared to slow-twitch muscle fibres.

• higher

• lower

Which stage(s) of respiration can take place in the absence of oxygen?

• Glycolysis

• Citric Acid cycle

• Electron Transport Chain

• All 3 Stages

............... twitch muscle fibres are useful for activities such as long-distance running, cycling or cross-country skiing.

• slow

• fast

Slow-twitch muscle fibres have ............ mitochondria.

• few

• many

• no

During vigorous exercise, a lack of oxygen causes which substance to be converted into lactate?

• Pyruvate

• Oxygen

• Citrate

• ATP