Cytology & Histology Exam 2021 PDF

# Cytology & Histology ## (30 Marks) **A) Choose the correct answer (11 Marks).** 1. Which of the following is not a function of smooth ER? a. Synthesis of proteins b. breakdown of glycogen c. Detoxify hydrophobic drug 2. Prokaryotic Cells are defined as: a. Only animal ce...

# Cytology & Histology ## (30 Marks) **A) Choose the correct answer (11 Marks).** 1. Which of the following is not a function of smooth ER? a. Synthesis of proteins b. breakdown of glycogen c. Detoxify hydrophobic drug 2. Prokaryotic Cells are defined as: a. Only animal cells b. Only plant cells c. Having a nucleus d. Not having a nucleus 3. Which of the following best describes the lipid bilayer present in the plasma membrane? a. Phospholipieds in single layer with heads facing outside the cell b. Phospholipids in double layer with heads of both layers meeting in middle c. Phospholipids in single layer with heads facing inside the cell d. Phospholipids in double layer with tails facing each other and heads on both the inside and outside of the cell 4. Which of the following is the space inside the inner membrane? a. Outer Membrane b. Inner Membrane c. Cristae d. Matrix 5. ......... Protein found span the lipid bilayer of the cell membrane. a) peripheral b) collagen c) integral 6. What type of tissue line alveoli of the lung and blood vessels a) Simple squamous b) Simple cuboid c) Simple columnar 7. ......... nerve cell has a single axon and many dendrites. a) Unipolar b) Bipolar c) Multipolar 8. The carbohydrates attached to lipid forming a) Glycolipid b) Glycoprotein c) lysosomes 9. .......... is specialized to give a degree of stretch and return back to the normal size. a) cuboidal epithelium b) pseudostratified epithelium c) transitional epithelium 10. Epithelial tissue is avascular. a. True b. False 11. This is a series of sac-like tunnels with ribosomes. The main function of this organelles is to make and process proteins. a. Smooth ER b. Nucleus c. Rough ER d. Golgi apparatus ## (30 Marks) **B) Put (X) or (√) then corrects the mistake: (4Marks)** 1. Mitochondria is responsible for formation of tail sheath of sperm. (√ ) 2. Simple columnar tissue lines alveoli and the wall of blood vessels. (X) 3. Cell membrane control the exchange of materials between the cell and its surrounding (√ ) 4. Centriole is present in all cells except the cells which lost the ability for cell division such as nerve cells. (√ ) **c. Answer the following (3 only) (15 Marks)** 1. Mitochondria are known as battaries of enzymes and can synthesize proteins. (explain) 2. Structural types of nerve cells 3. General characters of epithelial tissue. 4. Types and functions of endoplasmic reticulum