Soc 18 Energy Sources

Question 1

Glucose

Answer 1

Glucose: a major source of
energy for most cells in the body.

Question 2

Aerobic respiration

Answer 2

Aerobic respiration: the process
of releasing energy from glucose,
using oxygen.

Question 3

Anaerobic fitness

Answer 3

Anaerobic respiration: the
process of releasing energy from
glucose, without oxygen.

Question 4

Aerobic exercise

Answer 4

Aerobic exercise: working at a
moderate intensity allowing the
body time to utilise oxygen for
energy production and to work
for a continuous period, e.g. long-
distance events.

Question 5

Lactic acid

Answer 5

Lactic acid: a colourless acid
produced in muscle tissues
during strenuous exercise
when the body is exercising
anaerobically at high intensity.

Question 6

Cramp

Answer 6

Cramp: painful, involuntary
contraction of a muscle, usually
caused by fatigue.

Question 7

Anaerobic exercise

Answer 7

Working at a high intensity not allowing the body to utilise any oxygen e.g high intensity sprint

Question 8

Fats

Answer 8

Fats: a rich source of energy, but
many modern diets provide more
than our bodies need.

Question 9

Carbohydrates

Answer 9

Carbohydrates: the body’s main
source of energy.

Question 10

Free sugars

Answer 10

Free sugars: extra sugar added
to food and drink.