Helpp! the key to understanding how dna works is
A- to understand that each base only connects to another specific base.
B- to understand more about the sugar in each nucleotide.
C- to understand that it looks like a twisted ladder that spirals around.
D- to understand the role of the phosphate in each nucleotide.

Explanation:

to understand that each base only connects to another specific base.

According to the passage, “The secret of DNA, or what Crick called 'the secret of life,' is that every A molecule on one side of the rung always connects to a T on the other side, while every G molecule connects to a C.”

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.