POST UTME IMS U 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of bacteria is growing exponentially according to the equation \(N(t) = N_0e^{kt}\). If the initial population is 1000 and the population doubles every 2 hours, what is the growth rate k?
A. 0.3466
B. 0.6931
C. 1.3863
D. 2.7726
Question 2
A diagram of a plant cell is shown below. Which of the following organelles is responsible for the synthesis of ATP during photosynthesis?
A. Mitochondria
B. Chloroplast
C. Endoplasmic reticulum
D. Golgi apparatus
Question 3
In the e\cosystem, the producer is the primary consumer of the energy pyramid. Which of the following organisms is a producer?
A. Grasshopper
B. Frog
C. Plankton
D. Bacteria
Question 4
A researcher is studying the effects of a new compound on the growth of E. coli bacteria. Which of the following would be the most appropriate measure of growth?
A. The number of colonies on the agar plate
B. The optical density of the culture
C. The concentration of glu\cose in the medium
D. The pH of the culture
Question 5
A geneticist is studying the inheri\tance of a particular trait in a population of humans. The trait is controlled by a \single gene with two alleles: A and a. The genotype and phenotype of the individuals are as follows:
A. The trait is inherited in an autosomal dominant pattern.
B. The trait is inherited in an autosomal recessive pattern.
C. The trait is inherited in a sex-linked pattern.
D. The trait is inherited in a polygenic pattern.
Question 6
A diagram of the human eye is shown below. What is the primary function of the retina?
A. To detect changes in light intensity
B. To focus light on the retina
C. To regulate the amount of light entering the eye
D. To maintain the shape of the eyeball
Question 7
The human eye has a unique structure that allows it to detect light and transmit visual signals to the brain. Which of the following parts of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 8
A diagram of the human eye is shown below. What is the primary function of the lens?
A. To focus light on the retina
B. To detect changes in light intensity
C. To regulate the amount of light entering the eye
D. To maintain the shape of the eyeball
Question 9
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'?
A. 0.36
B. 0.64
C. 0.16
D. 0.04
Question 10
A population of rabbits is growing according to the \logistic equation \(dN/dt = rN\( 1-N/K)\ \). If the carrying capacity K is 1000 and the growth rate r is 0.1, what is the equilibrium population?
A. 250
B. 500
C. 750
D. 1000
Question 11
A 50 mL sample of a solution containing 0.5 M NaCl is diluted to 100 mL. What is the concentration of the resulting solution?
A. 0.1 M
B. 0.2 M
C. 0.25 M
D. 0.5 M
Question 12
A diagram of a DNA molecule is shown below. Which of the following is the primary function of the promoter region?
A. To initiate transcription
B. To regulate gene expression
C. To bind RNA polymerase
D. To form a hairpin loop
Question 13
A 2.5 L flask contains a mixture of N2 and O2 gases at 25°C and 1 atm. If 1.5 L of the mixture is removed and replaced with pure O2, what is the partial pressure of O2 in the flask?
A. 0.5 atm
B. 0.75 atm
C. 1.0 atm
D. 1.25 atm
Question 14
A researcher is studying the effects of pollution on a particular species of fish. Which of the following is a likely consequence of pollution on the fish population?
A. Increased population size
B. Decreased population size
C. No effect on population size
D. Increased diversity of species
Question 15
The human body has a unique system that allows it to maintain homeostasis and regulate its internal environment. Which of the following systems is responsible for regulating body temperature?
A. Nervous System
B. Circulatory System
C. Respiratory System
D. Sweat Glands

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