Download Revision Summary – Respiration + Photosynthesis

Revision Summary – Respiration + Photosynthesis
ADP, ATP, AEROBIC, ANAEROBIC, CELLULOSE, CHLOROPHYLL, CO2,
ENERGY, ENZYME, ETHANOL, FATIGUE, FIXATION, GLUCOSE,
GLYCOLYSIS, HEAT, HYDROGEN, KILOJOULES, LACTIC, LIGHT,
LIMITED, OXYGEN, PHOSPHATE, PHOTOLYSIS, PHOTOSYNTHESIS,
PYRUVIC, RESPIRATION, STARCH, TEMPERATURE, THIRTY- EIGHT,
TRANSFER, TWO, WALL, WATER,
1. Energy is measured in units called
2 Glucose is the main source of
.
in a living cell. The chemical energy
stored in glucose is released by a series of reactions controlled by enzymes.
The biochemical process is called
released as
and some of the energy is
.
3. ATP is a high energy compound able to release and
energy when
it is required for cellular processes.
4. ATP is regenerated from
and inorganic phosphate using energy
released from the breakdown of
5.
.
is a respiratory pathway common to aerobic and anaerobic
respiration. It involves the breakdown of glucose to
acid.
6. In the presence of oxygen,
respiration occurs.
7. In the absence of oxygen,
respiration occurs. In animal
cells pyruvic acid is reversibly converted to
pyruvic acid is irreversibly converted to
only
acid. In plant cells.
and CO2. In each case
molecules of ATP are produced per molecule of glucose.
8. Green Plants use sunlight as their source of energy to make food. This
process is called
. It is a means by which the raw materials
and CO2 are converted to the end products glucose and
by a series of
controlled reactions.
9. During the first stage of photosynthesis called
light energy is
captured by the green
in chloroplasts and used to split molecules of
water into oxygen and
. Some of the energy is used to regenerate
from ADP and inorganic
.
10. During the second stage of photosynthesis, called carbon
hydrogen from photolysis is combined with
,
to form glucose. This
process requires energy.
11. Some glucose molecules formed during photosynthesis are converted to
and stored; others are converted to
of the cell
and become part
.
12. Photosynthesis is affected by environmental factors such as
CO2 concentration and
. Its rate is therefore
whichever of these factors is in short supply.
intensity
by