This work is my original effort on respiration gathering information form different sources

1. What is respiration?
By Peter
RESPIRATION

2. A chemical process where organic
compounds are broken to release energy,
carbon (IV) oxide and water or alcohol in
cells
IMPORTANCE
Production of energy required
for;
Growth and repair of tissues
Locomotion
Transmission of nerve impulses

3. Click in to the following link and
watch the video.
 http://www.mhhe.com/biosci/bio_animations/MH0
1_CellularRespiration_Web/index.html

4. Synonyms;
 Tissue respiration or Internal respiration
SITE; Mitochondrion (plural-
mitochondria)
N.B;
Respiration IS NOT same as gaseous
exchange
Gaseous exchange is a physical
process, while respiration is a chemical
process.
Gaseous exchange occur at respiratory

5. RESPIRATION SITE and
STRUCTURE

6. MORE IMAGES

7. TYPES OF RESPIRATION
 There are two types of respiration
 Aerobic respiration – break down of food
substances in presence of oxygen
C6H1206 + 6O2 RESPIRATORY ENZYMES 6CO2 + 6H2O +
Energy (ATP)
(Glucose) + (Oxygen) Carbon (IV) Oxide +
Water + Energy
 In aerobic respiration, a lot of energy is given off
 Anaerobic respiration – breakdown of food
substances in absence of oxygen. Products are
dependent of organism; plant or animal. Less
energy is given off.

8. AEROBIC RESPIRATION
 Food is broken down in presence of
oxygen to release energy, carbon (IV)
oxide and water.
 The energy drives chemical reaction
where ADP (Adenosine diphosphate)
combines with inorganic phosphate
molecule to form ATP (Adenosine
triphosphate).
 Occurs in two phases;
First phase (GLYCOLYSIS)
Second phase (KREB’S CYCLE)

9. AEROBIC RESPIRATION
GLYCOLYSIS KREBS CYCLE
 Occurs in cytoplasm
in absence of oxygen.
 Involves breakdown
of glucose to form
pyruvic acid and
energy.
 Two ATP molecules
formed from one
molecule of glucose
 Occurs in matrix of
mitochondrion.
 In presence of oxygen,
pyruvic acid is oxidized
in a series of enzymatic
reactions to form
energy, carbon (IV)
oxide and water.
 36 - 38 ATP molecules
formed from one
glucose molecule.

10. CHEMICAL EQUATION FOR
AEROBIC RESPIRATION
 C6H1206 CYTOPLASM CH3COCOOH + 6O2
MITOCHONDRIA 6CO2 + 6H2O + Energy (ATP)
(Glucose) Pyruvic acid + (Oxygen)
Carbon (IV) Oxide + Water + Energy (ATP)
 In cytoplasm and mitochondria, several enzyme
controlled reactions takes place.
 There are conditions necessary for aerobic
respiration to take place.
 They are as follows;

11. CONDITIONS NECESSARY FOR
AEROBIC RESPIRATION
 Cells must be provided with glucose/food.
 Oxygen must be taken in and react with the
glucose.
 There must be respiratory enzymes to catalyze
the reaction.
 Proper temperature must be maintained for
efficient enzyme functioning.
 The end products of reaction must be constantly
be removed from the mitochondrion. They include
carbon (IV) oxide, water and energy.