Question

Why do Bacillus subtilis cultures often demonstrate more growth than Escherichia coli on plates that were exposed to equal amounts of UV light?
A) B. subtilis has thicker walls that protect the cells from UV
B) B subtilis is motile and moves away from the UV.
C) B. subtilis can produce endospores which are resistant to the effects of UV.

Answer 1

Answer:

C) B. subtilis can produce endospores which are resistant to the effects of UV.

Explanation:

Bacillus subtiles -

Bacillius subtiles bacteria is a gram - positive , found in soil and in humans in the gastrointestinal tract .

It is in rod shape , with tough and protective endospore  , so it can tolerate the extreme temperature and environmental conditions .

B. Subtiles can produce endospore when cultivated , and these are resistant to the UV light .

and the E . Coli can also produce endospore when cultivated , but these are not resistant to the UV light .