SS1 Third Term Biology Past Questions and Answers

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

a) Filtration of air

b) Oxygen transport

c) Gas exchange

d) Mucus production

Answer: c) Gas exchange

Question: Which phase of the cell cycle involves the actual division of the cell into two daughter cells?

a) G1 phase

b) S phase

c) G2 phase

d) M phase

Answer: d) M phase

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

a) Stomach

b) Small intestine

c) Large intestine

d) Esophagus

Answer: b) Small intestine

Question: What is the purpose of the circulatory system?

a) Nutrient absorption

b) Gas exchange

c) Transportation of nutrients and oxygen

d) Production of antibodies

Answer: c) Transportation of nutrients and oxygen

Question: Which of the following is a characteristic of prokaryotic cells?

a) Presence of a nucleus

b) Membrane-bound organelles

c) Unicellular organization

d) Larger size

Answer: c) Unicellular organization

Question: What is the function of the enzyme pepsin in the stomach?

a) Starch digestion

b) Protein digestion

c) Fat digestion

d) Nucleic acid synthesis

Answer: b) Protein digestion

Question: Which part of the human brain is responsible for coordination and balance?

a) Cerebrum

b) Cerebellum

c) Medulla oblongata

d) Hypothalamus

Answer: b) Cerebellum

Question: What is the purpose of the endocrine system?

a) Digestion

b) Coordination and communication

c) Gas exchange

d) Waste elimination

Answer: b) Coordination and communication

Question: Which gas is produced during the process of anaerobic respiration in animals?

a) Oxygen

b) Carbon dioxide

c) Nitrogen

d) Lactic acid

Answer: d) Lactic acid

Question: What is the role of the ovary in the female reproductive system?

a) Sperm production

b) Egg production

c) Hormone secretion

d) Uterus contraction

Answer: b) Egg production

Question: Which process is responsible for the formation of identical offspring in asexual reproduction?

a) Meiosis

b) Fertilization

c) Mitosis

d) Gametogenesis

Answer: c) Mitosis

Question: What is the function of the nephron in the urinary system?

a) Filtration of blood

b) Digestion of nutrients

c) Oxygen exchange

d) Hormone production

Answer: a) Filtration of blood

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

a) Blood circulation

b) Protection of internal organs

c) Digestion

d) Hormone production

Answer: b) Protection of internal organs

Question: In ecological terms, what is a consumer?

a) Organism that produces its own food

b) Organism that eats other organisms

c) Organism that decomposes dead matter

d) Organism that performs photosynthesis

Answer: b) Organism that eats other organisms

Question: Which type of symbiotic relationship benefits both participating species?

a) Commensalism

b) Parasitism

c) Mutualism

d) Predation

Answer: c) Mutualism

Question: What is the function of the cornea in the human eye?

a) Light absorption

b) Refraction of light

c) Color vision

d) Regulation of pupil size

Answer: b) Refraction of light

Question: Which part of the flower produces pollen?

a) Petal

b) Stamen

c) Pistil

d) Sepal

Answer: b) Stamen

Question: What is the purpose of the ozone layer in the Earth’s atmosphere?

a) Absorbing carbon dioxide

b) Filtering ultraviolet radiation

c) Producing oxygen

d) Regulating temperature

Answer: b) Filtering ultraviolet radiation

Question: Which type of genetic disorder is caused by an abnormality in the number of chromosomes?

a) Cystic fibrosis

b) Down syndrome

c) Hemophilia

d) Sickle cell anemia

Answer: b) Down syndrome

Question: What is the primary function of the gallbladder in the digestive system?

a) Producing bile

 

b) Storing bile

c) Absorbing nutrients

d) Regulating blood sugar levels

Answer: b) Storing bile