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Language and structure technique
Year 8
10 cards
Cards (39)
Anaerobic
Respiration

The process by which cells produce
energy
without using
oxygen
, resulting in a small amount of ATP and
lactic acid
production.
Aerobic
Respiration

The process by which cells produce energy using
oxygen
, resulting in a large amount of ATP production and no
lactic acid
production.
Glucose


A type of
sugar
that cells use as a source of
energy.
What is the process that plants use to trap light energy?
Photosynthesis
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What type of reaction is photosynthesis?
Endothermic reaction
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From what does a seedling derive its energy to grow?
Light energy trapped by
photosynthesis
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Where does photosynthesis take place in a plant?
In the
leaves
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What green chemical do leaves contain that absorbs light energy?
Chlorophyll
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What are the inputs for the photosynthesis reaction?
Carbon dioxide
and
water
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What is produced as a byproduct of photosynthesis?
Oxygen
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What is the word equation for photosynthesis?
Carbon dioxide
+ water →
glucose
+ oxygen
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What is the chemical formula for carbon dioxide?
CO
<
sub
>2</sub>
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What is the chemical formula for water?
H<sub>2</sub>O
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What is the chemical formula for glucose?
C<sub>6</sub>H<sub>12</sub>
O<sub>6</sub>
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What is the chemical formula for oxygen?
O<sub>2</sub>
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What happens to the rate of photosynthesis when light intensity is increased?
The rate of photosynthesis
increases
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What does it mean if light intensity is a limiting factor?
Photosynthesis is not as fast as possible
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What happens when light intensity is increased beyond a certain point?
The rate of
photosynthesis
levels off
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What is the next limiting factor after light intensity?
The level of
carbon dioxide
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What happens to the rate of photosynthesis when carbon dioxide levels are increased?
The rate of photosynthesis
increases
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What does it indicate when carbon dioxide is a limiting factor?
Photosynthesis
is not as fast as possible
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What other factors can affect the rate of photosynthesis?
Amount of
chlorophyll
and
temperature
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How does the amount of chlorophyll affect photosynthesis?
Less chlorophyll means lower photosynthesis
rate
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How does temperature affect the enzymes involved in photosynthesis?
Higher temperatures increase enzyme
activity
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What happens to enzymes if the temperature continues to increase?
They will
denature
and
activity
falls
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What are the factors that affect the rate of photosynthesis?
Light intensity
Carbon dioxide levels
Amount of chlorophyll
Temperature
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What is the overall process of photosynthesis?
Light energy is absorbed by chlorophyll
Carbon dioxide and water are taken in
Glucose and oxygen are produced
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How do light intensity and carbon dioxide levels affect photosynthesis?
Increased light intensity
raises
photosynthesis
rate
Increased carbon dioxide levels also
raise
photosynthesis
rate
Both can become
limiting
factors
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What happens to the rate of photosynthesis when temperature increases?
Rate increases with temperature up to a point
Beyond that point,
enzymes
denature
Rate of photosynthesis falls
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