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SSER Ltd.…read more

Slide 2

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AEROBIC RESPIRATION occurs within MOST living cells
and is the process by which food molecules (principally glucose)
are broken down, IN THE PRESENCE OF OXYGEN, to produce
ENERGY.
ANAEROBIC RESPIRATION involves the breakdown of food
molecules, IN THE ABSENCE OF SUFFICIENT OXYGEN, in
order to generate energy. In humans this occurs within
MUSCLE CELLS and in the plant kingdom it is performed
by a variety of cells notably yeast cells.
The overall equation for AEROBIC RESPIRATION IS:
ener
Glucose + Oxygen Carbon Dioxide + Water +
gy…read more

Slide 3

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The overall equation for AEROBIC RESPIRATION IS:
ener
Glucose + Oxygen Carbon Dioxide + Water +
gy
ener
C6H12O6 + 6O2 6CO2 + 6H2O + gy
The energy generated during the process of respiration
is lost as heat unless it is trapped and stored
Molecules of ATP store much of the released energy
ENERGY…read more

Slide 4

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ATP forms when chemical reactions release sufficient
energy to bond a third phosphate group to ADP
Adenosine
Phos Phos
phate phate diphosphate
(ADP)
ene
+ Phos
phate
+ rgy
Phos Phos Phos
phate phate phate
Adenosine triphosphate (ATP) High energy
bond…read more

Slide 5

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ATP is the energy currency for the cell
ATP stores energy for the cell and releases it when energy is
needed
This reaction is reversible and is catalysed by the enzyme
ATPase
Energy for cellular activity is stored in molecules of ATP
ATP breaks down when there is a demand for energy…read more

Slide 6

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Glucose
2
A
Aerobic cellular respiration is Glycolysis
2 Pyruvic T
the utilisation of oxygen by cells
Acid P
for the production of ATP
It is a series of over 20 chemical
reactions that can be divided into
four phases
THE FIRST PHASE IS CALLED
GLYCOLYSIS AND TAKES
PLACE IN THE CELL
CYTOPLASM
Glycolysis involves the breakdown
of one molecule of glucose (6C) to form
2 molecules of pyruvic acid (3C) or
pyruvate. There is a net production Mitochondrion
of TWO ATP MOLECULES during
this phase
Cell cytoplasm…read more

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