What type of bond holds Na+ and Cl- together in an NaCl molecule?

Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top, on the shelf of a 37° C incubator, and on the shelf of a 50° C incubator. After incubation, there was no growth at 37° C and 50° C, slight growth out on the bench top, and abundant growth at refrigeration. What term could be used for this species?

_____ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

All of the following are involved in type 2 hypersensitivity except

The _____ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.

The type of chemical bond linking amino acids together is a(n):

Ampicillin, amoxicillin, mezlocillin, and penicillin G all have

The lipid group that is the major component of cell membranes is the

The use of any chemical in the treatment, relief, or prophylaxis of a disease is called

The movement of substances from lower to higher concentration across a semipermeable membrane that must have a specific protein carrier and cell expenditure of energy is called