3952367
Description
Mind Map by kitty whitson, updated more than 1 year ago
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Created by Shubh Malde
over 8 years ago
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Copied by kitty whitson
over 8 years ago
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Photosynthesis & Respiration
- Photosynthesis
- Carbon dioxide + water (+ light energy) → glucose + oxygen
- Green plants contain
chlorophyll which makes them
green-they absorb light for
photosynthesis
- The glucose is used in respiration, or
converted into starch and stored.
Oxygen is produced as a by-product.
- Temperature, carbon dioxide concentration
and light intensity are factors that can limit
the rate of photosynthesis.
- Chemical change
- Photosynthesis takes place in
leaf cells. These contain
chloroplasts, which are tiny
objects containing chlorophyll.
- Plants need to take in a number of
elements to stay alive. The most
important are: carbon, hydrogen,
oxygen
- Sometimes photosynthesis is
limited by the concentration of
carbon dioxide in the air. Even if
there is plenty of light, a plant
cannot photosynthesise if there
is insufficient carbon dioxide.
- Green plants contain
chlorophyll which makes them
green-they absorb light for
photosynthesis
- Carbon dioxide + water (+ light energy) → glucose + oxygen
- Glucose + oxygen → carbon dioxide + water (+ energy)
- Respiration releases energy for cells
from glucose. This can be aerobic
respiration, which needs oxygen, or
anaerobic respiration, which does not.
During exercise, the breathing rate and
heart rate increase. During hard
exercise an oxygen lack may build up.
- Aerobic respiration happens all the
time in the cells of animals and
plants. Most of the reactions
involved happen inside mitochondria,
tiny objects inside the cytoplasm
of the cell. The reactions are
controlled by enzymes.
- Plants make amino acids from
sugars, nitrates and other nutrients.
Glucose is a sugar.These amino acids
are then compacted into larger
molecules - proteins
- Respiration needs to be high
speed in exercise to maintain
oxygen
- Respiration releases energy for cells
from glucose. This can be aerobic
respiration, which needs oxygen, or
anaerobic respiration, which does not.
During exercise, the breathing rate and
heart rate increase. During hard
exercise an oxygen lack may build up.
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