Histology Questions PDF

1- Three types of staining methods: 1) ………….……………………………………..………………………. 2) …………………………………….……………………………….…… 3) …………………………………………………………………………... 2- Components of cell cytoskeleton: 1) ………….………………………… …………..………………………. 2) …………………………………….…………………………...

1- Three types of staining methods: 1) ………….……………………………………..………………………. 2) …………………………………….……………………………….…… 3) …………………………………………………………………………... 2- Components of cell cytoskeleton: 1) ………….………………………… …………..………………………. 2) …………………………………….……………………………….…… 3) …………………………………………………………………………... 4- Types of exogenous pigments: 1) ………….………………………… …………..………………………. 2) …………………………………….……………………………….…… 3) ………………………………………………………………………... 6- Main functions of cell membrane: 1) ………….………………………… …………..………………………. 2) …………………………………….……………………………….…… 3) …………………………………………………………………………... II- Answer true (T) or false (F):========>(1 ½mark each)  1. Skeletal muscle cells are multinucleated cells. (T) 2. Ribosomes are formed in the Golgi apparatus. ( F ) 3. With EM, cells rich in SER are highly basophilic. ( F ). 4. The glycocalyx is formed mainly of calcium and proteins. ( F ) 5. Mitochondria undergoes self-replication. (T) IV- Choose the correct answer:========>(1 ½Markeach) 1-All the following are rapidly renewing cells, EXCEPT: a. Smooth muscle. b. Blood cells. c. Skin cells.d. Epithelium lining the digestive tract. 2- Acidophilic structures are: a. Acidic in nature. b. Basic in nature c. Stained with basic stains. d. Containing basic and acidic groups. 3- Composed of several array of cisternae and vesicles: a. The SER. b. The ribosome. c. Mitochondria. d. Golgi bodies. 4-Rough endoplasmic reticulum: a. Forms proteins. b. Is acidophilic. c. Controls pigment migration. d. Forms lipid. 5- Lysosomes originate from:  a. SER. b. Golgi. c. Cilia. d. Nucleus. 6- Eukaryotic cell has: a. Well defined nucleus. b. A limiting plasma membrane. c. No definite nuclear membrane. d. No membranous organoids. 7- One of the major antioxidant vitamins: a. Vitamin D. b. Vitamin A. c. Vitamin B9. d. Vitamin K. 8-Nucleolus is: a. Bounded by a membrane. b. Highly basophilic. c. Not essential for cell division. d. Highly acidophilic. 9- Regarding adult stem cells all are true, EXCEPT: a. Isolated from inner cell mass of blastocyst. b. Can multiply to replenish dying cells. c. Can regenerate damaged tissues. d. Found throughout the body after development. 10- Which one of the following is not considered an inclusion? a.pigment. b. glycogen c.Lipids. d.mitochondria 11- Intergral membrane proteins: a. May occupy a part of the P.M. b. Extend across the P.M. c. Are present only on the outer surface of the P.M.  d. a & b. 12- The amount of DNA in the cell at G2 phase is: a.Similar to that at G1 phase. b.Double that at S phase. c. Double that at G1 phase. d.None of the above. 13- A solid particle enters the cell by: a. Exocytosis. b. Phagocytosis. c. Pinocytosis. d. Cyclosis. 14- In necrosis, cell death is due to a. exogenous factors such as injury or toxins b. Genetic mutation c. Ageing of the cell d. Growth and progressive specialization 15- Fat can be shown in cells by: a-The PAS method. b-Colouring with Sudan. c-Staining with orcein. d-Its own colour. 16- In cell membrane, the hydrophobic parts of lipid molecules are directed a. Towards outside  b. Towards inside c. Towards outside and inside d. Randomly distributed 17- Cell swelling, is one of the main feature of: a. Apoptosis b. Stage 1 of cell cycle c. Necrosis d. Cell aging 18- The thickness of the P.M. is: a. 7-10 um. b.70-100 um. c. 7-10 nm. d. 1-3 nm. 19- Attached polysomes are responsible for: a. Formation of secretory proteins. b. Intracellular conduction of impulses. c. Synthesis of intracellular proteins. d. Formation of exported lipids. 20- Melanin pigments are: a. Endogenous inclusions. b. Exogenous organelles. c. Endogenous organelles. d. Stored food.