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CELL-BIOLOGY-AND-GENETICS
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CELL-BIOLOGY-AND-GENETICS
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Exam (elaborations) Biology 121 Biology, Cell Biology and Genetics, Chapters 1-17
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MERU UNIVERSITY OF SCIENCE AND TECHNOLOGYP.O. Box 972-60200 – Meru-Kenya.
Tel: +254(0) 799 529 958, +254(0) 799 529 959, +254 (0)712 524 293
Website: www.must.ac.ke Email: info@mucst.ac.ke
UNIVERSITY EXAMINATIONS 2021/2022
FIRST YEAR, FIRST SEMESTER EXAMINATION FOR DEGREE OF BACHELOR OF
SCIENCE IN CLINICAL MEDICINE AND COMMUNITY HEALTH
CCM 3111: CELL BIOLOGY AND GENETICS
DATE: JANUARY 2022 TIME: 2 HOURS
INSTRUCTIONS: Answer all questions in the booklet provided
Ensure that all your answers are properly numbered
Part I: Short Answer Questions-Answer questions following each other
on the answer booklet
Part II: Multiple Choice Questions (MCQs): Write the correct answer on
the space provided in the answer booklet. Each MCQ is one mark.
Part III: Long Answer Questions-Answer the questions on the answer
booklet.
SECTION ONE (SHORT ANSWER QUESTIONS, 20 MARKS)
1. Briefly describe two important macromolecules of a cell. (4 Marks)
2. Describe two major phases during division and cell cycle in eukaryotic cells. (4 Marks)
3. Differentiate between eukaryotic cells and prokaryotic cells. (6 Marks)
4. With the AID of a sketch, describe the animal cell. (6 Marks)
SECTION TWO (LONG ANSWER QUESTIONS, 30 MARKS)
1. Discuss what happens during the four major phases in mitosis. (20 Marks)
2. With the Aid of sketch describe what happens to the chromosome as a cell prepares to
divide. (10 Marks)
Meru University of Science & Technology is ISO 9001:2015 Certified
Foundation of Innovations Page 1
, SECTION THREE (MULTIPLE CHOICE QUESTIONS, 20 MARKS)
1. Cell without a cell wall is termed as
a. Tonoplast
b. Protoplast
c. Symplast
d. Apoplast
2. Which is not an example of transmembrane transport between different subcellular
compartments?
a. Transport from the stroma into thylakoid space
b. Transport from the cytoplasm into the lumen of the endoplasmic reticulum
c. Transport from the endoplasmic reticulum into the Golgi complex
d. Transport from mitochondrial intermembrane space into the mitochondrial matrix
3. Which is correct regarding the peptides in the Ramachandran plot?
a. The sequence of the peptide can be deduced
b. It is not possible to conclude whether a peptide adopts entirely helix or entirely beta-
sheet conformation
c. Peptides that are unstructured will have all the backbone dihedral angles in the
disallowed regions.
d. The occurrence of a beta-turn conformation in a peptide can be deducted.
4. The function of the centrosome is
a. Formation
b. Osmoregulation
c. Secretion
d. Protein synthesis
5. The function of cristae in mitochondria is
a. Electron transport and ATP
b. Carbon assimilation
c. Intake of 02
6. The cells were first seen microscopically by:
a. Scheiden
b. Schwann
c. Leenwenhock
d. Robert Hook
Meru University of Science & Technology is ISO 9001:2015 Certified
Foundation of Innovations Page 2
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