One important difference between RNA and DNA is that they have a different 5 carbon sugar.

An atom that has 6 electrons in its outer valence shell needs ____ more electrons to fill the shell and make the atom unreactive.

How many bonds occur between the C (cytosine) and G (guanine) on the two strands of DNA?

Which nucleotide is NOT added during DNA replication?

What molecule is used by animals as a way to store carbohydrates?

Select the pairs of organism characteristics that are homologous structures. 

A bird’s wing and the wing of an insect are examples of which of the following?

The forelimb of a whale and the wing of a bat and both used for locomotion, but in very different ways. However, when the bone structure of these limbs is examined, they are found to be very similar. This indicates that these two different species are

Consider the following demand and supply schedule.  Calculate the price elasticity of supply (PES) if the price rises from $200 to $300. 

When demand is elastic, price and total revenue move in the same direction.