POST UTME BABCOCK UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process by which an organism maintains a stable internal environment despite changes in the external environment is known as
A. Homeostasis
B. Osmoregulation
C. Excretion
D. Photosynthesis
Question 2
A 10 kg block is moving at a speed of 5 m/s. If the block is brought to rest in 2 s, what is the average force applied to the block?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 3
A study on the genetic basis of antibiotic resis\tance in bacteria revealed that the resis\tance gene is located on a plasmid. Which of the following is a likely consequence of this finding?
A. The bacteria will become more susceptible to antibiotics.
B. The bacteria will develop resis\tance to multiple antibiotics.
C. The bacteria will not be able to share the resis\tance gene with other bacteria.
D. The bacteria will not be able to replicate the plasmid.
Question 4
A researcher is studying the effect of pH on the growth of a microorganism. The researcher measures the growth of the microorganism at different pH levels and plots the results on a graph. What is the likely effect of increa\sing the pH on the growth of the microorganism?
A. The growth of the microorganism will increase.
B. The growth of the microorganism will decrease.
C. The growth of the microorganism will remain cons\tant.
D. The growth of the microorganism will fluctuate.
Question 5
In a xylem vessel, water and minerals are transported from the roots to the leaves through a process called
A. Transpiration
B. Translocation
C. Osmosis
D. Diffusion
Question 6
In a population of E. coli, the frequency of a particular gene is 0.4. If 1000 bacteria are randomly selected, what is the expected number of bacteria that will be heterozygous for this gene?
A. 400
B. 600
C. 800
D. 1000
Question 7
The classification of living things into different groups based on their characteristics and evolutionary relationships is called
A. Taxonomy
B. Phy\logeny
C. Classification
D. Evolution
Question 8
A solution contains 0.1 M NaCl and 0.2 M CaCl2. What is the concentration of Cl- ions in the solution?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 9
A cell is placed in a solution with a concentration of 0.1 M glu\cose. If the cell membrane is permeable to glu\cose, what is the concentration of glu\cose in the cell after 10 minutes?
A. 0.05 M
B. 0.075 M
C. 0.1 M
D. 0.15 M
Question 10
A species of bacteria is growing in a culture medium. If the initial population is 100 bacteria and the population doubles every 2 hours, what is the population size after 6 hours?
A. 1600
B. 2000
C. 2400
D. 3200
Question 11
The process by which the body removes waste products and excess subs\tances is called
A. Excretion
B. Osmoregulation
C. Respiration
D. Photosynthesis
Question 12
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.25 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 13
The process by which an organism becomes adapted to its environment over a long period of time is known as
A. Evolution
B. Natural Selection
C. Genetic Drift
D. Mutation
Question 14
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. If 1.0 mol of the gas is removed, what is the new pressure of the gas?
A. 1.0 \times 10^5 Pa
B. 2.0 \times 10^5 Pa
C. 2.5 \times 10^5 Pa
D. 3.0 \times 10^5 Pa
Question 15
A solution of 0.1 M NaOH is mixed with a solution of 0.1 M HCl. What is the resulting pH?
A. 7
B. 8
C. 9
D. 10

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