Human Biology (MLTS2101)

BSc, Biochemistry - BCHS

Semester: First Semester

Level: 200

Year: 2015

Answers (200 )
REPUBLIC OF CAMEROON REPUBLIQUE DU CAMEROUN
Peace-Work-Fatherland Paix-Travail-Patrie
The university of Bamenda Université de Bamenda
Department of Biological Sciences Départment des Sciences Biologiques
Title: Exam Questions Code: MLTS2101 1
st
semester level 1 course
Date: 23 February 2015 Time: 03 hours
Lecturers: Mr KADA/ Mr. OUMAR
Instructions
➢ Answer all questions section by section beginning with any part of your choice.
➢ Note that: for each definition below don’t write more than 2 lines.
➢
SECTION A: MCQ (30 marks)
Instructions: Select and write down only the question number and the single letter that best
answer the question in your answer sheets. (NB: good answer is 1 mark and the wrong answer is
-0.5 mark).
1. Lining layer of fallopian tubes, bronchi and bronchioles consist of
(a) columnar epithelium (b) ciliated epithelium (c) cubical epithelium (d) squamous epithelium (e)
all of the above.
2. What type of epithelium is associated with goblet cells?
(a) Simple squamous epithelium
(b) Simple cuboidal epithelium
(c) Simple columnar epithelium
(d) Stratified squamous epithelium
(e) Pseudostratified epithelium
3. What type of gland secretes its product through a duct or tube?
(a) Endocrine gland (b) Multicellular gland (c) Exocrine gland (d) All of the above (e) None of
the above
4. What is a gland called if the secretory portion is flask shaped?
(a) Simple gland (b) compound gland (c) Tubular (d) Alveolar (e0 Tubuloalveolar
5. Which of the following is a unicellular gland?
(a) Squamous cell (b) Goblet cell (c) Basal cell (d) Basket cell (e) Sertoli cell
6. What is a characteristic of the cells in the epidermis of the skin?
(a) Microvilli (b) Stereocilia (c) Cilia (d) Keratinization (e) both a and b
7. Component of blood responsible for producing antibodies is: (a)thrombocytes (b)
monocytes (c) erythrocytes (d) lymphocytes.
8. The layer of sotively dividing cells of skin is termed as: (a) Stratum compactum (b) Stratum
corneum (c) Stratum basale/stratum germinativum (d) Stratum lucidum.
9. Which pair is correct? (a) sweet= temperature regulation (b) saliva= sense of food taste (c)
sebum=sexual attraction (d) humerus= hind leg.
10. Keratinocytes are the predominant cells in the: (a) epidermis (b) papillary region of the
dermis (c) reticular region of the dermis (d) subcutaneous layer (e) All of the above are correct.
11. which of the following is most superficial? (a) stratum basale (b) papillary region of the
dermis (c) reticular region of the dermis (d) subcutaneous layer (e) All of the above are correct
12. fat storage is an important fucniton of the:
(a) epidermis (b) papillary region of the dermis (c) reticular region of the dermis. (d)
subcutaneous layer. (e) All of the above except the epidermis.
13. The flat bones of the skull develop by mean of:
(a) Endochopdoral ossification
(b) Intramembranous ossification
(c) Calverium ossification (d) Internal ossification (e) External ossification
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14. Blood plasma albumin content in person is below the normal value. This is accompanying with
tissue edema. What blood function is failed?.
(a) pH value maintenance (b) body temperature maintenance (c) blood oncotic pressure maintenance. (d)
blood coagulation system maintenance. (e) all answers are correct.
15. The normal platelets count is:
(a) 50000-70000 cell/cubic mm (b) 150000-400000 cell/cubic mm (c) 40000-50000 cell/cubic mm (d)
500000-700000 cell/cubic mm
16. Each of the following mature cells has a nucleus EXCEPT:
(a) lymphocyte (b) monocyte (c) erythrocyte (d) basophil (e) neutrophil
17. The junction between one neuron and the next, or between a neuron and an effector is called:
A) A synapse B) A dendrite
C) A neurotransmitter D) A ventricle E) None of the above.
18. A fast excitatory synapse follows this order: A) (1) neurotransmitter released(2) diffused across the
synaptic cleft to a receptor protein(3) binding of the transmitter opens pores in the ion channels and positive
ions move in
B) (1) neurotransmitter released(2) diffused across the synaptic cleft to a receptor protein(3) binding of the
transmitter opens pores in the ion channels and negative ions move in
C) (1) neurotransmitter released(2) diffused across the synaptic cleft to a receptor amino acid(3) binding of
the transmitter opens pores in the ion channels and positive ions move in
D) (1) diffused across the synaptic cleft to a receptor protein(2)neurotransmitter released
(3) binding of the transmitter opens pores in the ion channels and positive ions move in
E) None of the above.
19. Resting potential is:
A) excess positive ions accumulate inside the plasma membrane.
B) excess negative ions accumulate inside the plasma membrane
C) excess positive ions accumulate inside the plasma membrane
D) Both a and c E) both a & c
20. Transmission across a synapse is dependent on the release of?
A) neurotransmitter B) synaptic vesicle C) neurons D) receptor proteins
21. Motor neurons takes messages.
A) from the muscle fiber to the central nervous system
B) away from the central nervous system to the central nervous system
C) that are classified
D) away from the central nervous system to the muscle fiber.
22. The medulla oblongata helps to regulate which of the following:
A) Breathing B) Heartbeat C) Sneezing D) Vomiting E) all of the above.
23. The nervous system main components are what?
A) the Synapses and spinal cord
B) The neurons and the synapses
C) The brain and the neurons
D) The brain and the spinal cord
24. This carries the most blood at any time in the body
A) Veins B) Capillary beds C) Veins D) Aorta E) Vena Cava
25. The following contract together to pump blood.
A) Right atrium with the right ventricle and left atrium with the left ventricle
B) Right atrium with the left atrium and right ventricle with the left ventricle
C) Tricuspid valve and mitral valve
D) Aorta and pulmonary artery
E) Aorta, pulmonary artery and pulmonary vein
26. This is the pacemaker of the heart
A) A V node
B) Purkinje fibers
C) A V bundle
D) SA node
E) None of these, a pacemaker is surgically inserted.
27. The exchange of gases between the blood within the capillaries and tissue fluid surrounding the
body’s cells is called?
A) external respiration B) cell metabolism
C) cellular respiration D) internal respiration
28. where does gas exchange take place?
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A) Bronchioles B) conchae C) pulmonary capillaries D) Roots of the lung
29. The function of the ileum is
A) Absorb nutrients B) Absorb vitamin B12 and bile salts
C) To introduce bile and pancreatic juices D) Absorb alcohol and aspirin
30. The muscular system is controlled by what system?
A) The cardiovascular system
B) The integumentary system
C) The nervous system
D) none of the above
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