Multiple choice

1._______ can trigger an immune response to a less virulent strain of a pathogen. These shots can help prevent someone from developing the flu.

2.What is the term used to describe the energy needed to get a reaction started?

a. adhesion energy

b. activation energy

c. cohesion energy

d. chemical energy

3.Which of the following describes a state of equilibrium?

a. When the concentration of water outside a cell is the same as the

4.Our cells, along with plants, are eukaryotic. The size and shape of a cell can sometimes tell you about the cell’s________.