Complete the sentences using the words below.
When Paula is running, her muscle activity increases. To do
this, her muscle cells …………………………. at a faster rate to give
her more energy. Her muscles need to be supplied with
…………………….. and ………………….….. more quickly. Her heart
beats faster to increase the flow of ………………………..… . This
delivers the nutrients she needs, and carries the waste
products …………………..….. and …………………………… away from
her muscles.
Give two changes that happen to your
body when you exercise and explain
why that happens.
Define ‘aerobic respiration’.
Match the word with the statement:
Respiration
The process that releases
energy from food.
Oxygen
BLOOD, BREATHE, CARBON DIOXIDE, GLUCOSE, HEAT,
NITROGEN, OXYGEN, RESPIRE.
List three different ways energy from aerobic
respiration is used in our body:



Write the word equation for aerobic respiration:
Carbon Dioxide
AEROBIC
RESPIRATION
Energy
Complete the symbol equation for aerobic respiration
Is needed to release energy
from glucose in the body.
Is a waste product of
respiration.
Is produced when oxygen
reacts with glucose.
Name the two waste products in aerobic
respiration.
C6H12O6 + _______  _______ + ________ + Energy
What is the difference between ‘breathing’ and ‘respiration’?
Complete the sentences using the words below:
What form of respiration produces more
energy?
Imagine sprinting 100 metres. You need to transfer ________
from glucose to your muscles very ________. However, your
body cannot get _________ to its muscles quickly enough for
aerobic respiration to occur. This is why _________
respiration happens instead.
Define ‘anaerobic respiration’.
Circle the right answer
Aerobic
In anaerobic respiration, glucose breaks down _______
oxygen. Anaerobic respiration produces lactic acid.
Unfortunately, this can lead to painful ___________.
What is name for the anaerobic respiration performed
by yeast?
Anaerobic
ANAEROBIC
QUICKLY
Why is this form of anaerobic respiration useful for
making beer, wine, and bread?
OXYGEN CRAMPS ENERGY WITHOUT
Explain the terms oxygen debt and muscle fatigue
ANAEROBIC
RESPIRATION
Write the word equation for anaerobic respiration:
How do humans recover from oxygen debt and muscle fatigue?
Name the waste products of anaerobic
respiration.
List one similarity and three differences to compare aerobic and anaerobic
respiration.