POST UTME COAL CITY UNIVERSITY 2023 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
The human nervous system is responsible for controlling and coordinating the body's functions. The nervous system consists of two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). Which of the following is a function of the PNS?
Question 2
A respiratory system has a tidal volume of 500 mL and a respiratory rate of 12 breaths/min. What is the total minute ventilation?
Question 3
A patient is diagnosed with a rare genetic disorder caused by a mutation in the HFE gene. The patient's genotype is 'hfehfe'. If the frequency of the dominant allele 'HFE' is 0.8, what is the probability that the patient's offspring will inherit the disease-cau\sing allele?
Question 4
A cell is in the G2 phase of the cell cycle. What is the primary function of the cell during this phase?
Question 5
A 2.0 L flask contains 1.0 M glu\cose solution. If 0.5 g of yeast is added to the flask, and the reaction is allowed to proceed for 1 hour, what is the concentration of glu\cose remaining in the flask?
Question 6
In a tropical rainforest e\cosystem, what is the primary mechanism by which nutrients are cycled between organisms?
Question 7
The sense organ responsible for detecting changes in air pressure is the
Question 8
The human eye has a unique ability to focus on objects at varying dis\tances. This is due to the shape of the cornea and the lens, which change shape to re\fract light. However, this ability is limited by the range of motion of the ciliary muscles. If the ciliary muscles are unable to contract, the lens will become permanently fixed in a state of maximum curvature, leading to a condition known as
Question 9
A 25-year-old woman presents to the clinic with a 2-year history of recurrent episodes of abdominal pain, diarrhea, and weight loss. Her physical examination reveals a 2/6 systolic murmur at the left upper sternal border. Her laboratory results show a positive stool occult blood test and a low hemoglobin level. What is the most likely diagnosis?
Question 10
A population of bacteria is growing exponentially with a growth rate of 0.05/h. If the initial population is 1000 cells, what is the population after 2 hours?
Question 11
In a population of 1000 individuals, 20% are heterozygous for a particular gene, 40% are homozygous dominant, and 40% are homozygous recessive. What is the genotype and phenotype of the offspring when two heterozygous individuals are crossed?
Question 12
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
Question 13
The e\cosystem's energy flow is primarily driven by
Question 14
The e\cosystem's nutrient cycle is primarily driven by
Question 15
A 30-year-old woman presents to the emergency department with a 2-day history of severe abdominal pain, nausea, and vomiting. She has a history of peptic ulcer disease and is taking omeprazole. Her vital signs are: temperature 38.5°C, pulse 120 beats/min, blood pressure 90/60 mmHg, and respiratory rate 24 breaths/min. What is the most likely diagnosis?
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