Some Biology MCQ Questions Need Help

Peoplethinkimsarcastic SG · 2008-11-13T00:36:49+00:00

yes dyna sucks. i had to cancel the obviously wrong answers in the answer key, so that when my sisters use them they wont be confused

Which features contribute most to conserving heat in nearly all mammals?rapid metabolism or hair covering skin?

I think it's hair covering skin, since mammals all have hair.

EDIT: And also because hair is a distinctive trait of all mammals. Birds are warm-blooded too, but they have feathers.

Which is not a component of volunteery action?

1)effector organ 2) receptor neuron 3) relay neuron

I think it's receptor neuron, since a voluntary action does not neccessarily respond to a stimulus.

EDIT: CONFIRMED

In a chromosome diagram with all the chromosomes, how do you differentiate between boy and girl. Ill check wiki on this myself too.

Check out the 23 chromosome pair. A boy has a short Y chromosome and long X chromosome. A girl has 2 long X chromosomes.

woo thanks for the chromosome one so Y is short. and boy is xy while girl is xx.

So great minds sleep late before exams eh.

i still have to differ for the first one tho. hair doesnt contribute MOST to conserving heat.

will check this thread tmr morning for fun. As for now. Good night!

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