Question

State the difference between respiration and photosynthesis?

Answer 1

Respiration:

1. It takes place in all the living cells of plant.

2. This catabolic process continues throughout the day and night.

3. Utilizes oxygen and carbohydrates.

4. The end products of respiration are carbon dioxide and water.

5. The energy released from carbohydrates and other respiratory substrates is trapped in ATP (Adenosine Triphosphate) on oxidation. However, some energy is also lost in the form of heat.

6. Through the process of oxidative phos­phorylation, oxidation of carbohydrates yields ATP molecules – the energy currency in living organisms.

Photosynthesis:

1. It takes place only in the cells containing chlorophyll.

2. It takes place only in the presence of light.

3. Photosynthesis utilizes carbon dioxide and water.

4. The end products of photosynthesis are carbohydrates and oxygen.5. During photosynthesis, the light energy is converted into chemical energy in the form of carbohydrate.

5. During photosynthesis, the light energy is converted into chemical energy in the form of carbohydrate.

6. Through the process of Photophosphorylation during photosynthesis ATP molecules are synthesized by the conversion of light energy.

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Answer 2

Answer:

Respiration:

• it is a catabolic process
• large molecules are broken down into simpler molecules
• energy is released hence exergonic process
• occurs in plants animals and almost all living things
• it can be aerobic or anaerobic

Photosynthesis:

• it is an anabolic process
• simpler molecules combine to form larger molecule
• energy is utilized hence endergonic process
• occurs only in plants and some prokaryotes and eukaryotes
• it is dependent on sunlight water and co2.

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