Answer:
The correct answer is "the S layer may play a role in protecting cells from viruses and predatory bacteria found in nature but not in laboratory cultures".
Explanation:
The S-layer (surface layer) is a part of the cell's envelope comprised of of identical proteins or glycoproteins that could be found in archaes and some bacterias in nature. The function of the S-layer is unknown, however the fact that is only seen in nature suggest that it may play a role in protecting cells from viruses and predatory bacteria found in nature but not in laboratory cultures. It is likely that archaes and bacteria synthesize the S-layer when they recognize viruses and predatory bacteria in nature, the S-layer is not synthesized in laboratory cultures because these pathogens are not present.
Answer:
Protecting Biodiversity: Biodiversity Hotspots About half of all plant and animal spp. ... If Earth has 150,100,000 sq km of land, how much land area is included in hot spots 0.1 x 0.157 = 0.0157 0.0157 x 150,100,000 = 2,356,570 sq. km.
Explanation:
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