Receptor proteins that allow us to sense heat have been isolated as well as molecules that cause us to perceive heat such as hot pepper and wasabi. If such proteins are able to detect as little as 20.0 μg of capsaicin, the chemical responsible for the burn in peppers, how many molecules of capsaicin (C18H27NO3) are required before the tongue can detect it?

56 moles of   lieter in chemistry

може ли да зареждате повече информация, моля

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.