SS2 first term Biology past questions and answers

SS2 first term Biology past questions and answers

Here are 20 SS2 (Senior Secondary 2) Biology questions with options and answers:

Question: What is the primary function of the respiratory system?

A) Transportation

B) Digestion

C) Respiration

D) Circulation

Answer: C) Respiration

Question: Which organelle is responsible for cellular respiration?

A) Nucleus

B) Mitochondrion

C) Endoplasmic reticulum

D) Golgi apparatus

Answer: B) Mitochondrion

Question: What is the role of the chloroplast in plant cells?

A) Photosynthesis

B) Cellular respiration

C) Protein synthesis

D) Lipid synthesis

Answer: A) Photosynthesis

Question: In humans, which blood type is considered the universal donor?

A) A

B) B

C) AB

D) O

Answer: D) O

Question: What is the function of white blood cells in the immune system?

A) Oxygen transport

B) Clotting

C) Defense against pathogens

D) Nutrient transport

Answer: C) Defense against pathogens

Question: The process of breaking down glucose to release energy in the absence of oxygen is called:

A) Glycolysis

B) Photosynthesis

C) Krebs cycle

D) Fermentation

Answer: D) Fermentation

Question: Which part of the plant is responsible for water absorption?

A) Roots

B) Leaves

C) Stem

D) Flowers

Answer: A) Roots

Question: What is the main function of the nervous system?

A) Regulation of body temperature

B) Coordination and control

C) Oxygen transport

D) Digestion

Answer: B) Coordination and control

Question: Which of the following is a function of the skeletal system?

A) Blood circulation

B) Muscle contraction

C) Support and protection

D) Digestion

Answer: C) Support and protection

Question: What is the function of the enzyme amylase?

A) Protein digestion

B) Lipid digestion

C) Starch digestion

D) Nucleic acid digestion

Answer: C) Starch digestion

Question: Where does fertilization of the human egg typically occur?

A) Uterus

B) Ovary

C) Fallopian tube

D) Cervix

Answer: C) Fallopian tube

Question: The unit of heredity is known as:

A) Protein

B) Gene

C) Chromosome

D) Enzyme

Answer: B) Gene

Question: Which gas is essential for photosynthesis?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

Question: What is the main function of the excretory system?

A) Reproduction

B) Waste elimination

C) Nutrient absorption

D) Oxygen transport

Answer: B) Waste elimination

Question: What is the role of RNA in protein synthesis?

A) Carries amino acids

B) Serves as a genetic code

C) Transfers electrons

D) Carries instructions for protein synthesis

Answer: D) Carries instructions for protein synthesis

Question: Which of the following is a function of the liver?

A) Blood circulation

B) Oxygen transport

C) Detoxification

D) Muscle contraction

Answer: C) Detoxification

Question: What is the function of the ribosomes in a cell?

A) Energy production

B) Protein synthesis

C) Lipid synthesis

D) Waste elimination

Answer: B) Protein synthesis

Question: Which process is responsible for the release of energy in both aerobic and anaerobic respiration?

A) Glycolysis

B) Krebs cycle

C) Electron transport chain

D) Photosynthesis

Answer: A) Glycolysis

Question: The female sex hormone is known as:

A) Testosterone

B) Estrogen

C) Progesterone

D) Insulin

Answer: B) Estrogen

Question: What is the function of the red blood cells?

A) Clotting

B) Defense against pathogens

C) Oxygen transport

D) Nutrient absorption

Answer: C) Oxygen transport