SS3 first term biology past questions and answers

SS3 first term biology past questions and answers

Here are 20 SS3 Biology questions with options and answers:

Question: What is the powerhouse of the cell?

A) Nucleus

B) Mitochondria

C) Endoplasmic reticulum

D) Golgi apparatus

Answer: B) Mitochondria

Question: Which of the following is not a function of the liver?

A) Carbohydrate metabolism

B) Detoxification

C) Blood clotting

D) Oxygen transport

Answer: D) Oxygen transport

Question: What is the function of red blood cells?

A) Carry oxygen

B) Produce antibodies

C) Digest food

D) Store minerals

Answer: A) Carry oxygen

Question: In photosynthesis, where does the light-dependent reaction take place?

A) Chloroplasts

B) Nucleus

C) Mitochondria

D) Ribosomes

Answer: A) Chloroplasts

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

A) Transportation of nutrients

B) Protection of internal organs

C) Production of hormones

D) Pumping blood

Answer: B) Protection of internal organs

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

A) Regulation of body temperature

B) Exchange of gases

C) Filtration of blood

D) Digestion of food

Answer: B) Exchange of gases

Question: The process of cell division in eukaryotes is called:

A) Meiosis

B) Mitosis

C) Binary fission

D) Budding

Answer: B) Mitosis

Question: Which organelle is responsible for cellular respiration?

A) Nucleus

B) Golgi apparatus

C) Ribosomes

D) Mitochondria

Answer: D) Mitochondria

Question: What is the function of the enzyme amylase?

A) Break down proteins

B) Break down lipids

C) Break down carbohydrates

D) Break down nucleic acids

Answer: C) Break down carbohydrates

Question: The basic unit of heredity is called:

A) Protein

B) Gene

C) Enzyme

D) Hormone

Answer: B) Gene

Question: What is the purpose of the circulatory system?

A) Transportation of gases

B) Regulation of body temperature

C) Synthesis of proteins

D) Vision

Answer: A) Transportation of gases

Question: In which part of the digestive system does most nutrient absorption occur?

A) Stomach

B) Small intestine

C) Large intestine

D) Esophagus

Answer: B) Small intestine

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

A) Pumping blood

B) Digesting food

C) Coordination and control of body activities

D) Filtration of blood

Answer: C) Coordination and control of body activities

Question: What is the role of chlorophyll in photosynthesis?

A) Absorb and convert light energy

B) Break down glucose

C) Synthesize proteins

D) Regulate cell division

Answer: A) Absorb and convert light energy

Question: The fluid portion of the blood is called:

A) Platelets

B) Plasma

C) Red blood cells

D) White blood cells

Answer: B) Plasma

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 of the following is a plant hormone responsible for growth and development?

A) Insulin

B) Gibberellin

C) Estrogen

D) Testosterone

Answer: B) Gibberellin

Question: What is the role of the kidneys in the human body?

A) Digestion

B) Filtration of blood and urine formation

C) Oxygen transport

D) Hormone production

Answer: B) Filtration of blood and urine formation

Question: The process of converting nitrogen gas into ammonia by bacteria is called:

A) Denitrification

B) Nitrogen fixation

C) Nitrification

D) Nitrogen assimilation

Answer: B) Nitrogen fixation

Question: What is the purpose of mitosis in the cell cycle?

A) Production of gametes

B) Growth and repair of cells

C) Reduction of chromosome number

D) Formation of spores

Answer: B) Growth and repair of cells