SS3 Second Term Biology Past Questions And Answers

Whether you’re a diligent student, an aspiring biologist, or simply someone passionate about the wonders of life, these questions are designed to challenge and captivate. Let’s embark on another journey into the intricate world of biology. Are you ready for the challenge?

 

What is the main function of the cell membrane?

a) Controlling cell activities

b) Synthesizing proteins

c) Storing genetic information

d) Producing energy

 

Answer: a) Controlling cell activities

 

Which part of the brain is responsible for regulating basic bodily functions like breathing and heartbeat?

a) Cerebellum

b) Medulla oblongata

c) Hypothalamus

d) Thalamus

 

Answer: b) Medulla oblongata

 

In genetics, what term describes the combination of alleles an individual possesses for a particular trait?

a) Phenotype

b) Genotype

c) Dominant

d) Recessive

 

Answer: b) Genotype

 

What is the primary function of the Golgi apparatus in a cell?

a) Protein synthesis

b) Cellular respiration

c) Lipid production

d) Packaging and modifying proteins

 

Answer: d) Packaging and modifying proteins

 

Which gas is essential for photosynthesis to occur in plants?

a) Oxygen

b) Nitrogen

c) Carbon dioxide

d) Hydrogen

 

Answer: c) Carbon dioxide

 

What is the purpose of the skeletal system in the human body?

a) Regulation of body temperature

b) Providing structural support

c) Production of hormones

d) Digestion of food

 

Answer: b) Providing structural support

 

Which scientist is credited with the discovery of the structure of DNA?

a) Albert Einstein

b) Gregor Mendel

c) James Watson and Francis Crick

d) Charles Darwin

 

Answer: c) James Watson and Francis Crick

 

What is the function of the endocrine system?

a) Transporting nutrients

b) Regulating water balance

c) Producing hormones

d) Filtration of blood

 

Answer: c) Producing hormones

 

In ecological terms, what is a trophic level?

a) A stage in the cell cycle

b) A position in a food chain or web

c) A type of genetic mutation

d) A phase in photosynthesis

 

Answer: b) A position in a food chain or web

 

What is the role of antibodies in the immune system?

a) Transporting oxygen

b) Fighting infections

c) Breaking down toxins

d) Producing energy

 

Answer: b) Fighting infections

 

Which process is responsible for the movement of water through a plant?

a) Osmosis

b) Transpiration

c) Photosynthesis

d) Respiration

 

Answer: b) Transpiration

 

What is the function of the enzyme pepsin in the digestive system?

a) Breaking down carbohydrates

b) Breaking down proteins

c) Breaking down fats

d) Synthesizing DNA

 

Answer: b) Breaking down proteins

 

Which type of reproduction involves the fusion of gametes?

a) Asexual reproduction

b) Binary fission

c) Budding

d) Sexual reproduction

 

Answer: d) Sexual reproduction

 

What is the role of the ozone layer in the Earth’s atmosphere?

a) Absorbing ultraviolet radiation

b) Producing oxygen

c) Regulating temperature

d) Facilitating precipitation

 

Answer: a) Absorbing ultraviolet radiation

 

Which phase of mitosis involves the separation of sister chromatids?

a) Prophase

b) Metaphase

c) Anaphase

d) Telophase

 

Answer: c) Anaphase

 

What is the function of the nephron in the kidneys?

a) Filtration of blood

b) Production of urine

c) Regulation of blood sugar

d) Synthesis of red blood cells

 

Answer: b) Production of urine

 

What is the process by which RNA is synthesized from DNA?

a) Transcription

b) Translation

c) Replication

d) Transformation

 

Answer: a) Transcription

 

Which gas is released during the process of fermentation?

a) Oxygen

b) Carbon dioxide

c) Nitrogen

d) Hydrogen

 

Answer: b) Carbon dioxide

 

What is the role of the myelin sheath in nerve cells?

a) Protection

b) Transmission of nerve impulses

c) Synthesis of neurotransmitters

d) Cellular respiration

 

Answer: b) Transmission of nerve impulses

 

In the classification of living organisms, what comes after the kingdom?

a) Phylum

b) Class

c) Order

d) Family

 

Answer: a) Phylum