2023 WAEC GCE Biology Questions and Theory Answers – Free GCE Answers

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2023 WAEC GCE Biology Questions and Answers. If you have been following us you will know that all our practical specimens questions/answers given are correct answers which correspond with the question you saw in your exam hall.

Nkedugists Team has been working hard for students to succeed without collecting any dime from them. If actually, you are seeking answers to the 2023 WAEC biology question and answer then this article is for you.

We provide a very sure sample of what you will see in your exam hall that will help you pass your 2022 WAEC exams on biology.

Before you go for the WAEC GCE exam, find ways to test yourself and identify your weak spots so you can make sure you’re really ready. Get and study the WAEC GCE biology question and answer given to you below.

Generally, Getting a good grade is about getting the best overall percentage in the exams that you take. Exam points are usually the hardest to get, so make sure you get all the easy — or at least easier — points correctly.

Paper 1 will last for 1 hour
Attempt all questions from this section
Answer Paper 1 on your objective test answer sheet,
Use HB pencil throughout.

2023 WAEC GCE Biology Objectives Questions and Answers ( Review)

The 2023 WAEC GCE biology questions and answers are also divided into two sections (A & B). where A is usually objectives with possibly 60 questions while B is always made up of 6 to 7 essay questions. Below are the WAEC GCE biology questions and answers.

Question: What is the primary function of the mitochondria in a cell?
a) Protein synthesis
b) Energy production
c) Waste elimination
d) Cell division
Answer: b) Energy production

Question: Which organelle is responsible for protein synthesis in eukaryotic cells?
a) Nucleus
b) Golgi apparatus
c) Ribosomes
d) Endoplasmic reticulum
Answer: c) Ribosomes

Question: What is the chemical formula for glucose?
a) C12H22O11
b) H2O
c) CO2
d) C6H12O6
Answer: d) C6H12O6

Question: Which gas do plants absorb from the atmosphere during photosynthesis?
a) Oxygen (O2)
b) Nitrogen (N2)
c) Carbon dioxide (CO2)
d) Hydrogen (H2)
Answer: c) Carbon dioxide (CO2)

Question: What is the process by which green plants convert sunlight into chemical energy?
a) Respiration
b) Fermentation
c) Photosynthesis
d) Digestion
Answer: c) Photosynthesis

Question: What is the basic unit of heredity in living organisms?
a) Protein
b) Chromosome
c) Gene
d) Enzyme
Answer: c) Gene

Question: Which gas is released as a waste product of cellular respiration?
a) Oxygen (O2)
b) Carbon dioxide (CO2)
c) Nitrogen (N2)
d) Hydrogen (H2)
Answer: b) Carbon dioxide (CO2)

Question: What is the function of white blood cells in the human body?
a) Carrying oxygen
b) Digesting food
c) Fighting infections
d) Storing energy
Answer: c) Fighting infections

Question: What is the main function of the circulatory system?
a) Producing hormones
b) Transmitting nerve impulses
c) Digesting food
d) Transporting substances throughout the body
Answer: d) Transporting substances throughout the body

Question: Which type of blood vessels carry blood away from the heart?
a) Veins
b) Capillaries
c) Arteries
d) Lymphatic vessels
Answer: c) Arteries

Question: What is the largest organ in the human body?
a) Brain
b) Liver
c) Skin
d) Heart
Answer: c) Skin

Question: What is the process of cell division that produces two identical daughter cells called?
a) Mitosis
b) Meiosis
c) Binary fission
d) Budding
Answer: a) Mitosis

Question: What is the molecule responsible for storing and transmitting genetic information in cells?
a) DNA
b) RNA
c) ATP
d) Proteins
Answer: a) DNA

Question: Which gas is responsible for the greenhouse effect and contributes to global warming?
a) Oxygen (O2)
b) Carbon dioxide (CO2)
c) Nitrogen (N2)
d) Methane (CH4)
Answer: b) Carbon dioxide (CO2)

Question: What is the main function of the cerebellum in the brain?
a) Memory storage
b) Voluntary muscle control
c) Balance and coordination
d) Vision processing
Answer: c) Balance and coordination

Question: Which of the following is not a type of connective tissue?
a) Bone
b) Cartilage
c) Muscle
d) Blood
Answer: c) Muscle

Question: What is the process by which a cell engulfs and digests foreign particles or cellular debris?
a) Photosynthesis
b) Phagocytosis
c) Diffusion
d) Respiration
Answer: b) Phagocytosis

Question: What is the scientific name for the “voice box” in humans?
a) Trachea
b) Epiglottis
c) Larynx
d) Bronchus
Answer: c) Larynx

Question: Which of the following is not a type of blood cell?
a) Red blood cell (RBC)
b) White blood cell (WBC)
c) Platelet
d) Neuron
Answer: d) Neuron

Question: What is the process by which plants release water vapor into the atmosphere through small openings in their leaves?
a) Transpiration
b) Photosynthesis
c) Respiration
d) Osmosis
Answer: a) Transpiration


Paper 3 will last for 1 hour

1. What is the central dogma of molecular biology, and how does it explain the flow of genetic information within a cell?

a) Explain the process of natural selection and its role in the evolution of species.

b) What is the difference between mitosis and meiosis, and how do these processes contribute to cell division and genetic diversity?

c) Describe the structure and function of DNA, including its role in storing and transmitting genetic information.

2. How do enzymes facilitate biochemical reactions in living organisms? Provide examples of specific enzymes and their functions.

a) Discuss the concept of homeostasis and provide examples of how it is maintained in the human body.

b) Explain the process of photosynthesis and its significance in the production of energy for plants and other organisms.

3. What are the major differences between prokaryotic and eukaryotic cells? Provide examples of organisms that belong to each category.

a) Describe the different types of ecological relationships, such as mutualism, commensalism, and parasitism, and provide real-world examples of each.

b) Discuss the impact of human activities on biodiversity and ecosystems, including deforestation, pollution, and climate change.

4. Explain the principles of genetics, including Mendel’s laws of inheritance and the concept of genetic variation.

a) What are the key stages of the cell cycle, and how is cell division regulated to ensure accurate replication of DNA and proper cell growth?

b) Describe the structure and function of the nervous system in humans, including the roles of neurons and neurotransmitters.

5. Discuss the process of evolution by natural selection and provide evidence for the theory of evolution, including examples of observed evolutionary changes.

b) Explain the concept of ecological succession and how it relates to the development of ecosystems over time.

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