The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. what is this attraction called?

a a hydrogen bond

b a covalent bond

c an ionic bond

d a hydrophilic bond

What types of energy transfers and energy transportations are involved in the domino chain reaction?

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?