The B vitamins
a. protect the cells from damage by free radicals.
b. facilitate chemical reactions that yield energy from the macronutrients.
c. provide strength and stability to bones.
d. can be broken down to yield about 4 kcal per gram.

Chris has a thrombotic disorder which class of medications would his doctor prescribe to inhibit the thrombosis

True or false a fertilized cell divides many times to form an embryo

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants