Cells can conduct many tasks, including which of the following?
duplicate themselves
convert energy
selectively exchange materials
all of the above

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Which of the following molecules can be broken down into simple sugars? a. nucleic acid b. protein c. lipid d. carbohydrate

Genes that come together with different alleles are heterozygous. homozygous. genotype. segregated.