General Science Class 9 MCQS

All are factors affecting enzyme activity except?

1. pH
2. Substrate concentration
3. Organic solvent
4. Temperature

Rate of reaction will increase when temperature:

1. Increases
2. Decreases
3. Below 10°C
4. Both A and B

In an oxidation process 14135KJ energy is release, how many moles of glucose consume during this process?

1. 1
2. 3
3. 5
4. 10

Stage of aerobic respiration takes place at the cristae of mitochondria called?

1. Electron transport chain
2. Glycolysis
3. Kreb's cycle
4. C3 cycle

Loss of electron and proton is called?

1. Oxidation reaction
2. Reduction reaction
3. Redox reaction
4. All of these

Each mole of ATP store energy?

1. 7.3 kcal/mole
2. 7.3kj/mole
3. 17.3kcal/mole
4. 17.3kj/mole

Fundamental molecule produced during photosynthesis is :

1. Glucose
2. Amino acid
3. Fatty acid
4. Nucleotide

Light dependent reaction takes place in :

1. Stroma
2. Thylakoid
3. Cristae
4. Cisternae

Splitting of water in presence of light called?

1. Hydrolysis
2. Glycolysis
3. Photolysis
4. None of these

Select one the mismatched?

1. Protein → Amino acid
2. Carbohydrate → Glucose
3. Fats → Starch
4. Nucleic acid → Nucleotide