The body does not break down proteins to make ATP unless nothing else is available because the amino acids in proteins are needed to build new proteins more than they are needed for energy True or False

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

Animals that have thick fur and ae able to store large amounts of body fat live where ?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled