Biology Exam Past Questions and Answers | JAMB, WAEC and NECO

Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.

• Question 91: How does an enzyme affect the rate of a reaction? Options:
  A) It lowers the activation energy of the reaction, increasing the reaction rate.
  B) It raises the activation energy of the reaction, decreasing the reaction rate.
  C) It lowers the activation energy of the reaction, decreasing the reaction rate.
  D) It raises the activation energy of the reaction, increasing the reaction rate.
  Show Answer
  The correct answer is A .
• Question 92: The surface of an alveolus in a mammal is well supplied with tiny blood vessels known as Options:
  A) arterioles
  B) venules
  C) arteries
  D) capillaries
  Show Answer
  The correct answer is D .
• Question 93: Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because Options:
  A) the deposit have remains of organisms characteristic of when they were formed
  B) different strata have remains of organisms of the same kind
  C) only organisms with strong parts are fossilized
  D) most animal and plant fossils bear little resemblance to present day living specimens
  Show Answer
  The correct answer is A .
• Question 94:

  An animal which is active during the day is known as a

  Options:
  A) nocturnal animal
  B) diurnal animal
  C) terrestrial animal
  D) homortacmic animal
  Show Answer
  The correct answer is B .
• Question 95:

  Which of the following is not a transmitable character in plants

  Options:
  A) Habit of growth
  B) Resistance to environmental factors
  C) Life span
  D) Haemophilia
  Show Answer
  The correct answer is D .
• Question 96:

  

  Use the diagram below to answer the question that follow:

  The diagram represents a

  Options:
  A) Hygrometer
  B) Wind vane
  C) Anemometer
  D) Rain gauge
  Show Answer
  The correct answer is C .
• Question 97: A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin? Options:
  A) AA
  B) OO
  C) AO
  D) AS
  E) SS
  Show Answer
  The correct answer is D .
• Question 98: Which of the following groups of environmental factors are density-dependent? Options:
  A) Food, salinity, accumulation of matabolites and light
  B) Temperature, salinity predation and disease
  C) Food predation, disease and accumulation of metabolites
  D) Temperature food disease and light
  Show Answer
  The correct answer is C .
• Question 99: A unique characteristics of the cervical vertebrate is the presence of Options:
  A) large centrum
  B) long transverse processes
  C) zgapophysis
  D) vertebrartarial canal
  Show Answer
  The correct answer is D .
• Question 100: After a meal of yam has been digested, the highest concentration of glucose is to be found in the Options:
  A) hepatic artery
  B) pulmonary vein
  C) hepatic portal vein
  D) posterior vena cava
  Show Answer
  The correct answer is C .