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  In this illustration, which number indicates enzymes that hand off electrons down an energy gradient?

Describe the difference between competitive inhibition of an enzyme and noncompetitive inhibition of an enzyme with regard to its active site.

Diffusion through a semipermeable membrane is known as…

Which vitamin and mineral would help avoid periodontal disease of the mouth? 

Using the below EER equation, show your calculations for a male who is 74 years old, 6’3″ and 218 lbs and still active.  EER = 662 – 9.53 * age (years) + PA * (15.91 * weight [kg] + 539.6 * height [meters]) PA numbers are: Sedentary 1.00, Low Active 1.11, Active 1.25, Very Active 1.48

Lack of proper levels of saliva lead to all of the following except:

A decrease in physical activity and basal metabolic rate from early to late adulthood leads to an estimated decrease in daily energy needs by _____ calories per year.

If an atom were the size of a baseball, its nucleus would be about the size of a(n)

Which of the following is NOT an ion?

Classify the following bonds as ionic, covalent, or neither (O, atomic number 8; F, atomic number 9; Na, atomic number 11; Cl, atomic number 17; U, atomic number 92). O with F               Ca with Cl            Na with Na