Respiration 2
Respiration 2
Respiration 2
2021
RESPIRATION AND GAS EXCHANGE (cont)
V. What is lactic acid?
• Lactic acid is the waste product produced during anaerobic respiration.
• When you run fast lactic acid builds up in the muscles, causing painful cramps.
After running you continue to breathe quickly => “Oxygen debt”
C3H6O3 + O2 => ……………. + H2O + ATP
Lactic acid + ………. => ………………… + water +
energy
• Lactic acid is also made in the mouth, where specialised bacteria convert glucose
and other sugars to lactic acid. Lactic acid in your mouth can cause …………….
VIII. Photosynthesis
a. The process of photosynthesis
Plants need food to respire, grow and reproduce. Unlike animals, plants are able to make
their own food by the process of photosynthesis.
Photosynthesis takes place in the part of the plant cell containing ………………………..,
these are small structures that contain ………………………..
……………… + …………………. => ………………… + ……………..
Quesitons
1. What happens when we inhale?
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2. What happens when we exhale?
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3. How can you increase your lung capacity?
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April 2012.
October 2016
October 2018
April 2018