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B4-11 anaerobic respiration
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Structures used in respiration in plant and animal cell, draw the cells in your book and label the structures.
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Comparing aerobic and anaerobic respiration
•Recall how cells use energy released in respiration, including the synthesis of polymers•Understand aerobic and anaerobic respiration in providing energy•Describe cell structures and how they are involved in respiration
Keywords- anaerobic respiration, lactic acid, yeast, bacteria, ethanol
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Think of places or circumstances where oxygen levels are low.
?’
‘Can living things survive without oxygen?
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Glucose lactic acid (+energy released)
*You should be able to recall this word equation and describe why and where it happens (cell cytoplasm), just defining anaerobic as ‘without oxygen’ would not be enough to gain marks
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All living things carry out respiration. Some
organisms, such as plants, animals, bacteria, and
yeast can carry out aerobic and anaerobic
respiration. Some types of bacteria can only carry
out anaerobic respiration.
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glucose + oxygen
carbon dioxide + water
aerobic respiration
a lot of energy
glucose
lactic acid
anaerobic respiration in animal cells and bacteria
someenergy
glucose
alcohol + carbon dioxide
anaerobic respiration in plant cells and yeast
someenergy
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The 100-m sprint takes about 10–11 seconds. The heart and lungs cannot increase oxygen supply to the muscles fast enough, so most of the energy required during the short race comes from anaerobic respiration.
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The 100-m sprint takes about 10–11 seconds. The heart and lungs cannot increase oxygen supply to the muscles fast enough, so most of the energy required during the short race comes from anaerobic respiration.
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Germinating seeds respire anaerobically.
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Yeast cells can respire anaerobically until ethanol builds
up and becomes too toxic.
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Structure of a typical bacteria and yeast cell.
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Venn diagramAerobic and anaerobic respiration
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In animals a major one is probably during intense activity to escape a predator micro-organisms to allow survival or as an adaptation to anaerobic conditions plants to allow roots to survive periods of low oxygen in waterlogged ground.
When is anaerobic respiration useful?
