DNA Structure and Replication
TM refers to the temperature at which

All of these
50% of a protein molecules are denatured
50% of a DNA molecule is denatured
membranes are 50% fluid

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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?

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

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