7) The antibiotic amphothericin B disrupts plasma membranes by combining with st

Question

7) The antibiotic amphothericin B disrupts plasma membranes by combining with sterols; it affect all of the following cels EXCEPT A) animal cells B) gram-negative bacterial cells. C) fungal cells D) Mycoplasma cells E) plant cells 8) A protein that is permanently attached to the membrane from only one side is alan) A) transmembrane protein. B) integral monotopic protein. C) peripheral membrane protein. D) porin. E) transporter protein 9) All of the following, are an example of the passive transport system EXCEPT A) simple diffusion. B) group translocation. C) osmosis. D) facilitated diffusion. E) all of the above are an example of the passive transport system 10) Which transport system uses the concentration gradient as the driving force for the transport? A) primary active transport B) secondary active transport C) group translocation D) facilitated diffusion E) ABC transport system 11) ATP is directly used for A) facilitated diffusion. B) flagella rotation. C) group translocation. D) ABC transport system. E) antiporter system. 12) Which statement is NOT true about the group translocation system for glucose? A) It uses phosphoenolpyruvate as an energy-source. B) When glucose is transported, it is acetylated. C) Since glucose is modified, its exit by the same transporter can be prevented. ion gradient that favors further import of glucose through the transporter E) It prepares the transported glucose for the next metabolic 13) Extreme condition for autoclave was set to kill A) all bacteria, viruses, fungi except endospores B) fungal spores and prions C) both bacteria and fungi D) both bacteria and viruses E) endospores

Explanation / Answer

7. Amphotericin B disrupts plasma membrane. It affects all of the following cells except plant cells.

8 . A protein is permanently attached to the membrane from one side is a peripheral protein.

9. All of the above are passive transport system.

10. Facillited diffusion.

11. ATP is directly used for flagellar rotation.

12. When glucose is transported , it is acetylated. ( It is phosphorylated rather than acetylated).

13. Autoclave extreme conditions set to kill endospores.

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