(Unit 3) To investigate the effect of exercise on breathing/ pulse rate

Question 1

Give 2 factors other than exercise that have an effect on the circulatory system.

Answer 1

diet, smoking

Question 2

How do you measure pulse rate, and breathing rate?

Answer 2

PR: counted number of pulses per min
BR: counted number of breaths per min

Question 3

What would happen breathing/pulse rates after exercise has stopped?

Answer 3

decrease

Question 4

Why might you repeat the investigation (3 times)?

Answer 4

more accurate data

Question 5

During this activity, body temperature also increased, why?

Answer 5

respiration increased releasing heat

Question 6

Possible safety precautions for this investigation?

Answer 6

clear of obstacles,
allow a warm-up/cool down,
ensure no medical conditions

Question 7

Name the protein in blood responsible for transporting oxygen.

Answer 7

haemoglobin

Question 8

What is a pulse?

Answer 8

the stretching of an artery

Question 9

What makes the wrist/temple/neck a suitable part of the body to detect a pulse?

Answer 9

artery is near the surface

Question 10

What was the control of this investigation? What is the purpose of this control?

Answer 10

rate at rest,
compare with the results of the investigation

Question 11

Suggest how you might measure recovery time?

Answer 11

immediately after exercise
count pulse (record)
per minute^
measure length of time until resting is reached