Biochemical Reactions
• Photosynthesis
• Respiration
• Work in pairs
• You will have
to present
your results to
the class
• Choose one of these
reactions
• Briefly summarise what
happens
• Why is it important?
• Where does it happen?
– Draw and label a
detailed diagram of
where it happens
Dehydrogenase Activity in
Yeast
• Effect of temperature on anaerobic
respiration
• What other indicators could you use?
Dehydrogenase Activity in
Yeast
• Write a detailed conclusion and
evaluation for this experiment
Recap Essay on ATP
• Read someone’s essay
• Mark the content out of 20
• The structure out of 5
• The grammar out of 5
Respiration
Lesson 1
Respiration
• What is it?
• Where does it occur?
Structure of the Mitochondria
Folded inner membrane-increase surface
Area – MORE ENZYMES
CRISTAE
MATRIX
• Describe and
Explain the Structure
of the Mitochondria
ATP
• How is it produced?
• What is it used for?
• 10 million molecules of ATP are
produced every second
Respiration
2 Types
Respiration
• Briefly summarise the 2 types of
respiration
– Equations
– Uses
– etc etc etc
Aerobic Respiration
• Does petrol just explode in a car?
Aerobic Respiration
• Gradual progression of steps
• Requiring REDOX reactions
Aerobic Respiration
• Is 37 ̊ degrees hot enough to burn a
fuel?
– Explain your answer
Aerobic Respiration
Glucose
• What is the chemical formula for
glucose?
• What is the molecular mass of
glucose?
• How many grams is one mole of
glucose?
• How many kJ’s of energy does one
mole of glucose produce?
Aerobic Respiration
RESPIRATION STEPS
1. Glycolysis
2. Link Reaction
3. Krebs Cycle
4. Electron Transport Chain
GLYCOLYSIS
Aerobic cellular respiration is
the utilisation of oxygen by cells
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
of two atp molecules
during this phase
Glucose
2 Pyruvic
Acid
Glycolysis
2
ATP
GLYCOLYSIS
Glycolysis takes place in the 1 of cells and begins with
the activation of the main respiratory substrate,
namely the hexose sugar 2. This activation involves the
addition of two 3 molecules provided by two
molecules of 4. The resultant activated molecule is
known as 5 and in the next stage of glycolysis it is split
into two molecules of 6. The third stage entails the
oxidation of these molecules by the removal of 7,
which is transferred to a carrier called 8. The final
stage is the production of the 3 carbon molecule 9
which also results in the formation of two molecules of
10.