A component of the body\'s second line of defense does not include Select one: a

Question

A component of the body's second line of defense does not include Select one: a. cell-mediated apoptosis O b. an inflammatory response to recent injury O c. phagocytes ingesting invading organisms d. anti-microbial activity due to lysozyme excreted in tears Select one 0 a. excess sodium inside the cell. b. open K* channels. O c. depolarization d. open Na channels Viral infected cells sometimes secrete a substance called interferon, which diffuses to other cells and protects them against viral infection. Which is not a possible mechanism by which interferon works? Select one: a. stimulating host cell DNA to produce an antiviral protein b. initiating a chain of events which ultimately blocks viral protein synthesis at the host cell ribosomes O c. producing a substance which protects the cell against many different kinds of invading viruses O d. destroying the ribosomes of invading viruses

Explanation / Answer

1. The answer should be option (d) anti- microbial activity due to lysozyme excreted in tears.

Explanation:- lysozyme excreted in tears come under primary line of defence.

2. The answer should be option (b) open K+ channel.

Explanation:- two channel play a important role in maintaining resting membrane potential.

- sodium potassium pump.

- potassium leak channel.

3. The answer should be option (d) destroying the ribosomes of invading viruses.

Explanation:- virus don't have cell organelles like ribosome of their own. They depend on host ribosome for their protien to be synthesized. So it is impossible for destroying the ribosomes of invading viruses.

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