Which of the following is considered a “sharp”? a. all of the answer choices b. needles c. razor blades d. scalpels

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

Most of the carbon on earth is stored in the form of