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Biology paper 1
BIOENERGETICS
Respiration
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Created by
Laaibah Riaz
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Cards (27)
What should you be able to describe at the end of this video?
Aerobic
and
anaerobic
respiration
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Why is energy important in biology?
For movement, warmth, and
chemical reactions
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What is the process that supplies energy in cells?
Cellular respiration
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What type of reaction is respiration?
Exothermic
reaction
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Where does respiration take place?
In all living
cells
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What is the word equation for aerobic respiration?
Glucose
+
Oxygen
→
Carbon Dioxide
+ Water + Energy
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What does aerobic respiration produce?
Carbon dioxide
and water
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Why does aerobic respiration release a great deal of energy?
Because
glucose
is fully
oxidized
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What is the chemical symbol for glucose?
C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>
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What is the chemical symbol for oxygen?
O<sub>2</sub>
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What is the chemical symbol for carbon dioxide?
CO<sub>2</sub>
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What is the chemical symbol for water?
H<sub>2</sub>O
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What happens when there is not enough oxygen for aerobic respiration?
Cells carry out
anaerobic respiration
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What do muscle cells convert glucose to during anaerobic respiration?
Lactic acid
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What is a key fact about anaerobic respiration?
It does not require any
oxygen
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How does anaerobic respiration compare to aerobic respiration in terms of energy release?
It
releases
much
less
energy
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In which cells can anaerobic respiration take place?
Muscle
, plant, and
yeast
cells
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What is the reaction for anaerobic respiration in yeast?
Glucose
→ Ethanol +
Carbon Dioxide
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What is anaerobic respiration in yeast called?
Fermentation
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What is produced by fermentation in yeast?
Ethanol
and carbon dioxide
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How is fermentation useful in making alcoholic drinks?
It produces
ethanol
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How does fermentation help in bread making?
Carbon dioxide
creates bubbles in dough
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What are the key differences between aerobic and anaerobic respiration?
Aerobic
respiration requires
oxygen
; anaerobic does not.
Aerobic produces
carbon dioxide
and
water
; anaerobic produces
lactic acid
or
ethanol
and carbon dioxide.
Aerobic releases a lot of energy; anaerobic releases much less
energy
.
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What are the main products of aerobic respiration?
Carbon dioxide
Water
Energy
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What are the main products of anaerobic respiration in muscles?
Lactic acid
Energy
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What are the main products of anaerobic respiration in yeast?
Ethanol
Carbon dioxide
Energy
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What are the uses of fermentation in food production?
Producing
alcoholic beverages
Making bread
rise
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