POST UTME RSU 2017 Biology | Objective

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Question 1
In a photosynthetic pathway, what is the primary function of the enzyme RuBisCO?
A. Fixation of CO2
B. Reduction of NADP+
C. Regeneration of RuBP
D. Oxidation of NADPH
Question 2
The process by which the body maintains a stable internal environment despite changes in the external environment is known as:
A. Homeostasis
B. Regulation
C. Adaptation
D. Acclimation
Question 3
A 2.0 L flask contains a mixture of 0.50 M NaCl and 0.25 M KNO3. What is the total molarity of the solution?
A. 0.50 M
B. 0.75 M
C. 1.00 M
D. 1.25 M
Question 4
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. 0.72
D. 0.84
Question 5
A patient has been diagnosed with a kidney stone. Which of the following organs is responsible for filtering waste products from the blood?
A. Liver
B. Kidneys
C. Pancreas
D. Spleen
Question 6
Asexual reproduction in plants can occur through the production of
A. Seeds
B. Spores
C. Buds
D. Rhizomes
Question 7
A plant cell is placed in a solution with a high concentration of sucrose. What happens to the cell's turgor pressure?
A. Increases
B. Decreases
C. Remains the same
D. Becomes negative
Question 8
A diagram of a plant's xylem and phloem is shown below. What is the function of the xylem?
A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Storage of starch and proteins
D. Synthesis of ATP and NADPH
Question 9
A researcher is studying the effect of temperature on the growth rate of E. coli. She measures the growth rate at different temperatures and plots the data on a graph. Which of the following types of graphs would best represent the relationship between temperature and growth rate?
A. \( y = mx + b \)
B. \( y = mx^2 + b \)
C. \( y = \frac{1}{x} + b \)
D. \( y = \frac{1}{x^2} + b \)
Question 10
The hormone responsible for the regulation of blood pressure is:
A. Adrenaline
B. Noradrenaline
C. Angioten\sin II
D. Aldosterone
Question 11
In a typical animal cell, the mitochondria are responsible for producing ATP through cellular respiration. What is the primary source of energy for cellular respiration?
A. Glu\cose
B. Amino acids
C. Fatty acids
D. Proteins
Question 12
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of blood pressure
C. Stimulation of the immune system
D. Response to stress and anxiety
Question 13
The process of photosynthesis in plants involves the conversion of
A. Glu\cose and oxygen
B. Carbon dioxide and water
C. Nitrogen and phosphorus
D. Potassium and sodium
Question 14
The process by which the nervous system transmits signals from one neuron to another is known as:
A. Synaptic transmission
B. Neurotransmission
C. Electrical transmission
D. Chemical transmission
Question 15
A researcher is studying the structure of DNA. She uses X-ray crystal\lography to determine the arrangement of nucleotides in the molecule. What is the primary function of the sugar-phosphate backbone in DNA?
A. To provide a template for replication
B. To store genetic information
C. To provide structural support
D. To facilitate transcription

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