POST UTME ABU 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of cellular respiration involves the breakdown of glu\cose to produce energy. Which of the following is a product of the citric acid cycle?
A. ATP
B. NADH
C. FADH2
D. All of the above
Question 2
A 25-year-old male presents with a 2-year history of progressive weakness and wasting of the proximal muscles of the upper limbs. Which of the following is the most likely diagnosis?
A. Muscular dystrophy
B. Myasthenia gravis
C. Amyotrophic lateral sclerosis (ALS)
D. Polymyositis
Question 3
The process of meiosis results in the production of?
A. Haploid cells
B. Diploid cells
C. Somatic cells
D. Germ cells
Question 4
A 10 L flask contains 2 mol of an ideal gas at 25°C. If the gas is heated to 50°C, what is the new volume?
A. 20 L
B. 30 L
C. 40 L
D. 50 L
Question 5
The bacterium Escherichia coli (E. coli) is a common inhabi\tant of the human gut. Which of the following is a key feature of E. coli that allows it to thrive in this environment?
A. Ability to synthesize its own amino acids
B. Ability to fix nitrogen from the air
C. Ability to ferment lactose
D. Ability to produce antibiotics
Question 6
A plant with the genotype 'Aa' is crossed with a plant with the genotype 'aa'. What is the probability that the offspring will have the genotype 'AA'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 7
A neuron has a resting membrane potential of -70 mV. If the neuron is stimulated by an action potential, what is the approximate maximum depolarization of the membrane?
A. -50 mV
B. -60 mV
C. -70 mV
D. -80 mV
Question 8
The genetic variation in a population is increased by?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Question 9
A plant with the genotype 'Aa' is crossed with a plant with the genotype 'Aa'. What is the probability that the offspring will have the genotype 'aa'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 10
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 20 μmol CO2 s-1
B. 40 μmol CO2 s-1
C. 80 μmol CO2 s-1
D. 160 μmol CO2 s-1
Question 11
The process by which plants convert light energy into chemical energy is known as?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 12
In the xylem, what is the primary function of the tracheary elements?
A. To transport water and minerals from the roots to the leaves
B. To transport sugars and other organic compounds from the leaves to the rest of the plant
C. To provide structural support to the plant
D. To regulate gas exchange between the plant and the atmosphere
Question 13
A 40-year-old male presents with a 5-year history of progressive shortness of breath and fatigue. Which of the following is the most likely diagnosis?
A. Chronic obstructive pulmonary disease (COPD)
B. Asthma
C. Pulmonary embolism
D. Cystic fibrosis
Question 14
A 30-year-old female presents with a 1-year history of recurrent episodes of abdominal pain, diarrhea, and weight loss. Which of the following is the most likely diagnosis?
A. Irritable bowel syndrome (IBS)
B. Inflammatory bowel disease (IBD)
C. Gastroesophageal reflux disease (GERD)
D. Celiac disease
Question 15
What is the primary function of the Golgi apparatus in eukaryotic cells?
A. Protein synthesis
B. Lipid synthesis
C. Carbohydrate modification
D. Protein degradation

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