1. The process of vesicles fusing with the cellular membrane to secrete substanc

Question

1. The process of vesicles fusing with the cellular membrane to secrete substances outside the cell is called a. endocytosis b. antiport c. exocytosis d. phagocytosis 2. Which of the following cytoskeleton elements could be found in the nucleus? a. intermediate filaments b. microtubules c. actin filaments d. none of the above 3. Kinesins and dyneins are: a. motor proteins involved in moving vesicles in the cell b. motor proteins using energy of ATP hydrolysis to move along the microtubules c. motor proteins that move in the same direction d. both a. and b. are correct in the 4 Soluble proteins are imported in the nucleus nuclear membrane. a. unfolded, pores b. folded/pores c. bound to chaperones/pores d. folded/vesicles using 5. The function of the proteosomes is: a. to synthesize proteins b. to degrade proteins tagged (red-flagged) with ubiquitin c. to degrade proteins in the lysosome d. none of the above 6. Lipoproteins (LDL and HDL) are effective "vehicles" to transport cholesterol through the body because: a. they "increase" the solubility of cholesterol in the water-based environment of the blood b. they are big enough to fit many cholesterol molecules c. they have LDL receptors d. none of the above

Explanation / Answer

1-c

2-b

3-d

4-a

Note- the microtuble in nucleus help it during cell dision process where chromosome attches to them for separation

Exocytosis is release of cellular contect outside the cell through fusion with menbrane.

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