POST UTME AAUA 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The Hardy-Weinberg principle states that genetic variation in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No gene flow
D. No natural selection
Question 2
The process by which microorganisms, such as bacteria, acquire antibiotic resis\tance is known as
A. Horizontal Gene Transfer
B. Vertical Gene Transfer
C. Mutation
D. Gene Duplication
Question 3
A 40-year-old man presents with a 6-month history of progressive shortness of breath and fatigue. He has a history of smoking 2 packs of cigarettes per day for 20 years. Which of the following is the most likely diagnosis?
A. Chronic obstructive pulmonary disease (COPD)
B. Asthma
C. Pulmonary embolism
D. Lung cancer
Question 4
A diagram of the human digestive system is shown below. What is the function of the structure labeled 'C'?
A. To absorb nutrients from the food
B. To break down proteins
C. To produce bile
D. To regulate the pH of the digestive system
Question 5
The process by which an organism excretes waste products, such as urea, is known as
A. Osmoregulation
B. Excretion
C. Regulation
D. Homeostasis
Question 6
A population of bacteria is growing exponentially. If the initial population is 100 cells and the population doubles every 2 hours, what is the population after 6 hours?
A. 1000 cells
B. 2000 cells
C. 4000 cells
D. 8000 cells
Question 7
The diagram below shows the structure of a neuron. Which part is responsible for transmitting signals?
A. Axon
B. D\endrite
C. Cell body
D. Myelin sheath
Question 8
In a population of 1000 bacteria, 80% are susceptible to a particular antibiotic. If 200 bacteria are exposed to the antibiotic, what is the expected number of resis\tant bacteria?
A. 120
B. 160
C. 200
D. 240
Question 9
A certain species of bird is known to migrate to a different region during the winter months. Which of the following is a possible explanation for this phenomenon?
A. The birds are searching for food
B. The birds are escaping harsh weather conditions
C. The birds are migrating to a different breeding ground
D. The birds are experiencing genetic drift
Question 10
A diagram of a plant cell is shown below. Which of the following is a function of the cell wall?
A. Support and protection
B. Transport of materials
C. Synthesis of proteins
D. Storage of nutrients
Question 11
The diagram below shows the structure of a plant cell. Which part is responsible for photosynthesis?
A. Vacuole
B. Chloroplast
C. Cell wall
D. Nucleus
Question 12
The process of genetic drift can lead to which of the following?
A. Increased genetic variation
B. Decreased genetic variation
C. No change in genetic variation
D. Increased mutation rate
Question 13
A 5-year-old child is diagnosed with acute lymphoblastic leukemia (ALL). The child's white blood cell count is 100,000 cells per microliter. Which of the following is the most appropriate initial treatment?
A. Vincristine and prednisone
B. Cyclophosphamide and doxorubicin
C. Methotrexate and cytarabine
D. L-asparaginase and mercaptopurine
Question 14
In the context of photosynthesis, what is the role of the enzyme RuBisCO in the Calvin cycle?
A. It catalyzes the conversion of CO2 to a 3-carbon molecule
B. It is involved in the light-dep\endent reactions
C. It is a key enzyme in the light-indep\endent reactions
D. It is responsible for the breakdown of glu\cose
Question 15
A 50-year-old man is diagnosed with prostate cancer. The cancer cells are found to be androgen-dep\endent. Which of the following treatments would be most effective?
A. Surgery
B. Chemotherapy
C. Hormone therapy
D. Radiation therapy

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