Which of the following is not part of an amino acid? A. ammonium group
B. carboxylate group
C. ether group
D. unique "R" group

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

How many neutrons does a atom of cobalt have?