Practice Post UTME SKYLINE UNIVERSITY biology 2017 Past Questions

Question 1

A cell is placed in a solution with a high concentration of glu\cose. What is the expected outcome?

A. The cell will undergo apoptosis

B. The cell will undergo mitosis

C. The cell will take up glu\cose through facilitated diffusion

D. The cell will produce lactic acid

Question 2

A diagram shows a plant with the following characteristics: leaves are alternate, stems are herbaceous, and flowers are in clusters. What is the most likely classification of this plant?

A. Dicotyledon

B. Monocotyledon

C. Gymnosperm

D. Angiosperm

Question 3

A 2.5 L solution of a 0.5 M NaCl solution contains 1.25 g of NaCl. What is the molarity of a 1 L solution of this NaCl solution?

A. 0.5 M

B. 1 M

C. 1.5 M

D. 2 M

Question 4

A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'Rr'?

A. 0.25

B. 0.5

C. 0.75

D. 0.9

Question 5

A researcher is studying the effects of climate change on the distribution of a particular species. Which of the following is a valid method for analyzing the data?

A. Regression analysis

B. Time-series analysis

C. Spatial analysis

D. Survival analysis

Question 6

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 recessive genotype 'aa'?

A. 0.04

B. 0.08

C. 0.16

D. 0.24

Question 7

A plant cell has a vacuole that contains 0.5 M sucrose. If the cell membrane is permeable to sucrose, what is the concentration of sucrose in the cytosol?

A. 0.25 M

B. 0.5 M

C. 0.75 M

D. 1.0 M

Question 8

A solution contains 0.1 M NaCl and 0.2 M glu\cose. What is the total concentration of solutes in the solution?

A. 0.1 M

B. 0.2 M

C. 0.3 M

D. 0.4 M

Question 9

In a food chain, what is the primary role of producers such as plants and algae?

A. To consume other organisms and obtain energy

B. To produce their own food through photosynthesis

C. To decompose dead organisms and recycle nutrients

D. To form symbiotic relationships with other organisms

Question 10

In a photosynthetic pathway, which of the following is the primary acceptor of electrons in the light-dep\endent reactions?

A. Plastocyanin

B. Ferredoxin

C. Pheophytin

D. ATP

Question 11

A diagram of the human kidney is shown below. Which part of the kidney is responsible for filtering waste products from the blood?

A. Glomerulus

B. Proximal convoluted tubule

C. Distal convoluted tubule

D. Collecting duct

Question 12

A plant has a photosynthetic rate of 10 mg CO2 per hour. If the plant is exposed to light for 8 hours, what is the total amount of CO2 fixed?

A. 40 mg

B. 60 mg

C. 80 mg

D. 100 mg

Question 13

A population of rabbits is growing exponentially. If the initial population size is 100 and the growth rate is 20% per year, what is the population size after 5 years?

A. 1000

B. 2000

C. 4000

D. 8000

Question 14

A 5% solution of glu\cose in water has a concentration of 5 g per 100 mL. What is the concentration of a 250 mL solution of this glu\cose solution?

A. 10 g

B. 12.5 g

C. 15 g

D. 20 g

Question 15

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. 0.64

B. 0.36

C. 0.16

D. 0.04

POST UTME SKYLINE UNIVERSITY 2017 Biology | Objective

Master the Exam!

Help others prepare! Share this practice hub: