How does RNA differ from DNA? 

During their annual breeding cycle, male emperor penguins care for and incubate eggs. During this time, a male penguin can lose a large amount of biomass (weight). Where does this biomass (weight) go?

If one strand of a DNA double helix has the sequence CATTGAG, what will be the sequence of the other strand if the other strand is RNA?

What type of bond is present between the 2 carbon atoms in C2H4?           

What name is given to the following reaction that produces maltose?

“Our bodies convert glucose into energy like ATP.” Do you agree or disagree with this statement? Why or why not?

Magnesium tends to:

An element with an electronic configuration 1s22s22p5 has:

The nucleus is composed of neutrons, protons and electrons.

What type of orbital is shown in the following image?