POST UTME LEAD CITY UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The table below shows the results of a survey on the favorite colors of 100 students. What is the mode of the distribution?
A. blue
B. green
C. red
D. yellow
Question 2
A 2.5 L solution of 0.5 M NaCl is diluted to 5 L. What is the new concentration of NaCl?
A. 0.1 M
B. 0.2 M
C. 0.25 M
D. 0.5 M
Question 3
The diagram below shows a cross-section of a leaf. What is the function of the labeled structure?
A. photosynthesis
B. transpiration
C. respiration
D. support of the plant
Question 4
In the human body, what is the primary function of the digestive system?
A. Breakdown of food into nutrients
B. Absorption of nutrients into the bloodstream
C. Elimination of waste products
D. Regulation of body temperature
Question 5
In a population of 1000 individuals, 70% are heterozygous for a particular gene, 20% are homozygous dominant, and 10% are homozygous recessive. What is the genotype of the individual represented by the Punnett square below?
A. HH
B. hh
C. Hh
D. hh
Question 6
In the context of asexual reproduction, what is the primary advantage of budding in yeast?
A. Increased genetic diversity
B. Reduced energy exp\enditure
C. Enhanced survival rate
D. Improved nutrient uptake
Question 7
A 10 g sample of a subs\tance is dissolved in 100 mL of water. What is the concentration of the solution?
A. 0.1 M
B. 0.2 M
C. 0.5 M
D. 1 M
Question 8
A scientist is studying the structure of a protein and wants to determine the secondary structure of the protein. Which of the following techniques would be most useful for this purpose?
A. X-ray crystal\lography
B. Nuclear magnetic resonance (NMR) spectroscopy
C. Circular dichroism (CD) spectroscopy
D. Mass spectrometry
Question 9
A diagram of the human digestive system is shown below. Identify the organ responsible for the breakdown of proteins into amino acids.
A. Mouth
B. Esophagus
C. Stomach
D. Small intestine
Question 10
A bio\logist observes a population of rabbits in a controlled environment. The population grows according to the \logistic growth model. If the initial population size is 100 rabbits and the carrying capacity is 1000 rabbits, what is the population size after 5 generations?
A. 500
B. 750
C. 900
D. 950
Question 11
What is the term for the movement of molecules from an area of high concentration to an area of low concentration?
A. Osmosis
B. Diffusion
C. Active transport
D. Passive transport
Question 12
In the human body, what is the primary function of the circulatory system?
A. Transport of oxygen and nutrients to cells
B. Removal of waste products from cells
C. Regulation of body temperature
D. Maintenance of fluid balance
Question 13
In the context of respiratory physio\logy, what is the primary function of the diaphragm?
A. To regulate blood pressure
B. To facilitate gas exchange
C. To increase lung volume
D. To decrease lung volume
Question 14
A 25-year-old female patient is diagnosed with a rare genetic disorder that affects her ability to synthesize a crucial enzyme. Which of the following classifications of living things is most relevant to this patient's condition?
A. Domain
B. Kingdom
C. Phylum
D. Class
Question 15
A 30-year-old male patient is diagnosed with type 2 diabetes mellitus. Which of the following organs is primarily responsible for glu\cose regulation in this patient?
A. Liver
B. Pancreas
C. Kidneys
D. Adrenal glands

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