Bioenergetics and energy produced in TCA cycle.

1. In the Name of Allah , The Most
Gracious , The Most Merciful

2. Topic
Bioenergetics and
energy produced in
TCA cycle.
By :- Abdul Qahar

3. Bioenergetics
• Bioenergetics is the subject of a field of
biochemistry that concerns energy flow through
living systems.

4. Bioenergetics
• It is the part of biochemistry
• Concerned with the energy
• In a living organism, chemical bonds are broken

5. Bioenergetics
• Living organisms obtain energy
• For example, lithotrophs

6. Bioenergetics
• Materials generally combined with oxygen.
• Can also be oxidized an aerobically.

7. Bioenergetics
• Living organism produce ATP.
• The energy got through the hydrolysis of ATP is
used as a battery.

8. Exergonic
• Exergonic
releases energy.
• It is thermodynamically favored.
• The release of energy is negative and equal to
- ΔG.

9. Endergonic
• Endergonic
consumes energy.
• It has a positive ΔG

10. Cotransport
• In August 1960, Robert K.
• Discovery of the sodium-glucose cotransport as
the mechanism for intestinal glucose absorption.

11. Energy balance
Energy intake
internal heat produced +
external work + storage.

12. Bio medical importance
• Bioenergetics is the study of the energy changes
accompanying biochemical reactions. Biologic
systems are essentially isothermic and use
chemical energy to power living processes.
• Animal obtains suitable fuel from its food to
provide the energy for metabolism.
•
Death
starvation.

13. Bio medical importance
• Thyroid hormones control the rate of energy
release and disease results when they
malfunction.
• Excess storage of surplus energy causes
obesity.

14. Energy Production Through the
Krebs's Cycle
• This cycle is a series of chemical intermediates.
• Each step is catalyzed by a specific enzyme.

15. Energy Production Through the
Krebs's Cycle
• The cycle starts with oxaloacetate and ends with
oxaloacetate.
• The cycle produces 1 ATP, 3 NADH, and 1
FADH2 per turn.

16. Thank you
Questions are welcomed