Author Topic: BIOLOGY DOUBT!!!  (Read 1853 times)

Offline sara_ar98

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BIOLOGY DOUBT!!!
« on: April 25, 2013, 02:29:59 pm »
okay so in the syllabus- biology igcse, they mention that candidates should expect to apply their understanding of the flowers they have studied to unfamiliar flowers.. what are the main flowers?
and the other question is why do antibiotics kill bacteria not virus?

Offline NotAbod

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Re: BIOLOGY DOUBT!!!
« Reply #1 on: April 25, 2013, 08:58:03 pm »
You should be able to label and identify basic structure (petals, sepal, anther, filaments, etc). And what else do you study about flowers? I really forgot, but thats what they mean.

why antibiotics kill bacteria and not virus
because antibiotics target cell walls of bacteria and weakens it, the bacterial cell burst as a result of osmotic effect (cell wall falls apart, water diffuse in, cell bursts). Viruses do not have cell walls so they are not affected by antibiotics.

Anything else? :)