POST UTME UNILORIN 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 2
A diagram of the human respiratory system is shown below. Which part of the system is responsible for exchanging oxygen and carbon dioxide?
A. Trachea
B. Bronchi
C. Alveoli
D. Diaphragm
Question 3
A diagram of the human nervous system is shown below. Which part of the brain is responsible for controlling voluntary movements?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal Cord
Question 4
The process of mitosis in eukaryotic cells involves the division of
A. Nucleus and cytoplasm
B. Chromosomes and nucleolus
C. Mitochondria and ribosomes
D. Lysosomes and Golgi apparatus
Question 5
The process of mitosis in a cell can be described by the equation (P(t) = P_0 left\( 1 - \frac{t}{\tau}\right \)^n), where (P(t)) is the population size at time (t), \( P_0 \) is the initial population size, \( \tau \) is the characteristic time, and (n) is the number of generations. If the population size increases to 200 individuals after 5 generations, what is the value of (n)?
A. 3
B. 5
C. 7
D. 9
Question 6
The rate of diffusion of a subs\tance is influenced by
A. Temperature
B. Concentration gradient
C. Surface area
D. Time
Question 7
A 2.5 g sample of a compound containing only carbon and hydrogen is analyzed by combustion. The volume of CO2 produced is 1.2 L at 25°C and 1 atm. What is the empirical formula of the compound?
A. CH4
B. C2H6
C. C3H8
D. C4H10
Question 8
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 9
A species of 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 by the plant?
A. 80 mg
B. 100 mg
C. 120 mg
D. 160 mg
Question 10
The structure of a prokaryotic cell consists of
A. Nucleus, mitochondria, and ribosomes
B. Cell wall, cytoplasm, and plasma membrane
C. Chloroplasts, Golgi apparatus, and lysosomes
D. Flagella, centrioles, and cilia
Question 11
A person with a blood pressure of 120/80 mmHg is taking a blood sample. If the blood sample is placed in a tube with a diameter of 1.5 cm and a length of 10 cm, what is the pressure exerted by the blood on the tube wall?
A. 0.5 kPa
B. 1.2 kPa
C. 2.5 kPa
D. 3.8 kPa
Question 12
The process of symbiotic relationship between fungi and plant roots is known as
A. Mycorrhiza
B. Lichenization
C. Epiphytism
D. Commensalism
Question 13
A patient is diagnosed with a genetic disorder that is caused by a mutation in a specific gene. Which of the following best describes the relationship between the mutation and the genetic disorder?
A. The mutation causes a change in the amino acid sequence of the protein encoded by the gene.
B. The mutation causes a change in the regulation of the gene.
C. The mutation causes a change in the expression of the gene.
D. The mutation causes a change in the structure of the gene.
Question 14
A patient has a blood glu\cose level of 120 mg/dL. What is the approximate concentration of glu\cose in the patient's blood?
A. 1.2 g/dL
B. 2.4 g/dL
C. 3.6 g/dL
D. 4.8 g/dL
Question 15
A patient has a blood urea nitrogen (BUN) level of 25 mg/dL. What is the approximate osmotic pressure of the blood in the patient's kidneys?
A. 300 mmHg
B. 400 mmHg
C. 500 mmHg
D. 600 mmHg

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: