12. Which statement best describes the relationship between cells, DNA, and proteins?
ODNA is composed of proteins that carry coded information for how cells function.
Cells contain DNA that controls the production of proteins.
Cells are linked together by proteins to make different kinds of DNA molecules.
Proteins are used to produce cells that link amino acids together into DNA.

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Which description provides the best objective summary of the article in the passage?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d