41) Insufficient intake of iron will FIRST affect which of the following levels in the body?

A) hemoglobin

B) hematocrit

C) transferrin

D) ferritin

42) Which of the following is associated with increased absorption of zinc?

A) vegetarian diet

B) growth

C) aging

D) illness

43) Which mineral’s absorption is enhanced greatly by vitamin C?

A) chromium

B) iron

C) sulfur

D) manganese

44) Which mineral increases insulin’s effectiveness in cells?

A) selenium

B) chromium

C) fluoride

D) copper

45) A major dietary source of iodine worldwide is

A) dairy products.

B) salt water fish.

C) iodized table salt.

D) fruits and vegetables.

46) What is the most common nutrient deficiency, worldwide?

A) calcium

B) vitamin B12

C) folate

D) iron

47) Which of the following is a molecule that combines with an enzyme to activate it and help it do its job?

A) a transport protein

B) collagen

C) a coenzyme

D) a prion

48) A lack of intrinsic factor can lead to what form of anemia?

A) microcytic

B) pernicious

C) megaloblastic

D) sickle cell

49) Which of the following are red blood cells that transport oxygen through the body?

A) erythrocytes

B) hemoglobin

C) myoglobin

D) leukocytes

50) The fluid portion of the blood is called

A) lymph.

B) hemoglobin.

C) platelets.

D) plasma.