answers graded A+
CHAPTER 7
The bioavailability of any particular vitamin is dependent upon ______________.
A. Conditions in the digestive tract
B. Life stage
C. All the choices apply
D. Diet composition - correct answer C. All the choices apply
Vitamins that work as antioxidants include:
A. Vitamin C, Folate, and Vitamin B-12
B. Thiamin, Riboflavin, and Niacin
C. Vitamin A, Vitamin B-6, and Vitamin B-12
D. Vitamin C and Vitamin E - correct answer D. Vitamin C and Vitamin E
Many vitamins work as co-enzymes in the process of converting macronutrients to the form of
cellular energy, ATP. What best describes the function of a co-enzyme?
A. They help with absorption
B. They bind to an enzyme to promote its activity
C. They bind to cell membranes to improve cell structure
D. They fight free radicals - correct answer B. They bind to an enzyme to promote its activity
Which of these vitamins would likely not be lost when soaking a food in water?
A. Riboflavin
B. Vitamin B-12
, C. Vitamin K
D. Folate - correct answer C. Vitamin K
Persons with vitamin C deficiency are at risk for developing scurvy due to vitamin C's role in:
A. Production of red blood cells
B. Impact on tissue of the nervous system
C. Synthesis and maintenance of collagen
D. Building bone - correct answer C. Synthesis and maintenance of collagen
Why might a physician caution someone on the drug warfarin to avoid vitamin K supplements?
A. Vitamin K supplements when taken with warfarin impact bone development
B. Vitamin K supplements are fat soluble and prevent blood clotting from occurring
C. Vitamin K plays a role in normal blood clotting and warfarin thins blood, preventing or slowing
clotting
D. Patients on warfarin would not ever be advised to avoid Vitamin K supplements - correct answer
C. Vitamin K plays a role in normal blood clotting and warfarin thins blood, preventing or slowing
clotting
This vitamin requires a special transporter protein that is made in the stomach called intrinsic factor
to help with absorption.
A. Riboflavin
B. Thiamin
C. Vitamin B-12
D. Pantothenic Acid
E. Vitamin K - correct answer C. Vitamin B-12
Which of these is not a fat-soluble vitamins?
A. Vitamin E