DNA Structure and Replication
There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

One
Thousands and tens of thousands
none of these
About 100

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DNA Structure and Replication
The higher order structure of DNA shows symmetry, whereas the higher order structures of most proteins do not. Why isn't protein shape more regular like DNA?

The many different amino acid R groups on proteins confer many different shapes.
All of these
Some S amino acids cause proteins to bend; others cause protein to flatten.
DNA has one main function in cells whereas proteins have many.

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