According to the DRIs, a 29-year old male requires how much vitamin B12?
a. 1.8 mcg
b. 1.2 mcg
c. 2.4 mcg
d. 2.0 mcg
Answer: c. 2.4 mcg
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The most abundant trace mineral in the body is
A) iron. B) zinc. C) copper. D) iodine
When the B vitamins help numerous enzymes produce reactions within cells, they are acting as
A) antioxidants. B) hormones. C) coenzymes. D) anticoagulants.
The progression phase of cancer has all of the following characteristics EXCEPT:
a. abnormal cells increase rapidly. b. the abnormal cells impair the normal functions of the tissue where they are growing. c. this phase is easily curable. d. abnormal cells may migrate to other tissues and cause DNA damage.
Which of the following statements is true of tissues?
A) Connective tissues play an important communicative role in the body. B) Epithelial tissues support, connect, and anchor body structures. C) Muscle tissues in the human body are both voluntary and involuntary. D) Neural tissues make up the skin and the inner lining of the human organs.