Cholesterol uptake by cells occurs though which of the following endocytic pathw

Question

Cholesterol uptake by cells occurs though which of the following endocytic pathway A) Phagocytosis B) Pinocytosis C) Receptor mediated endocytosis D) All of the above Which of the following statements about phagocytosis is not true? A) It is a mechanism for the cell to take up large particles such as bacteria B) Phagocytosed lateral can be degraded in the lysosome C) During phagocytosis cell surface receptors bind bacteria D) It is mechanism by which extracellular fluid is internalized into cells. True/False Question The Lamellipodia consists of a network of cross linked actin filaments 2. The aip2/3 complex promotes actin nucleation 3. Actin myosin contraction is dependent on ATP hydrolysis 4. Focal adhesions contain cadherin proteins 5. Integrins are activated by binding to the actin cytoskeleton 6. The movement of dynein along microtubules depends on GTP hydrolysis 7. The gamma tubulin ring complex is necessary for microtubule growth 8. Clathrin coated ve

Explanation / Answer

17.

Cholesterol uptake occurs through receptor mediated endocytosis.

Cholesterol binding to LDL receptors results in the formation of coated pits.

So, option C is correct.

18.

Pinocytosis is the mechanism by which extracellular fluid is internalized into cells.

So, option D

T/F

1. True

2. True

3. True

4. False. Focal adhesions contain integrin.

5. False. Ligands for integrins are collagen, laminin, fibronectin and vitronectin.

6. False. Dynein movement depends on ATP hydrolysis.

7. True

8. True

9. True

10. True

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