Regulatory t cells
a. may function in preventing autoimmune reactions
b. decrease their activity as antigenic stimulus decreases
c. trigger antibody production and stimulate macrophages
d. release cytokines that increase the activity of cytotoxic t cells and activated b cells
e. secrete interferons

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

4. rat liver is able to metabolize glucose by both the glycolytic and the pentose phosphate pathway. which of the following are properties of both the glycolytic and pentose phosphate pathway? a. nad+ is involved b. co2 is liberated c. phosphate esters are intermediates d. glyceraldehyde 3-phosphate is an intermediate e. fructose 6-phosphate is an intermediate4. rat liver is able to metabolize glucose by both the glycolytic and the pentose phosphate pathway. which of the following are properties of both the glycolytic and pentose phosphate pathway? a. nad+ is involved b. co2 is liberated c. phosphate esters are intermediates d. glyceraldehyde 3-phosphate is an intermediate e. fructose 6-phosphate is an intermediate

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle