Rickets is caused by
a. overexposure to UV radiation.
b. an excess of calcitonin.
c. inadequate amounts of vitamin D.
d. an excess of ascorbic acid.
e. a fetal deficiency of thyroid hormone.
C
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When blood returns from the pulmonary circuit, it first enters the ____ chamber of the heart
a. left atrium b. left ventricle c. right atrium d. right ventricle e. both the left atrium and the right atrium
Which type of yeast is referred to as “brewer’s yeast”?
a. Candida insectamens b. Brettanomyces bruxellensis c. Saccaromyces cerevisiae d. Sporidiobolus johnsonii
What happens to an ATP molecule after it has released a phosphate?
A) It becomes AMP and is recycled into proteins. B) It is phosphorylated and becomes ADP. C) It is converted into lactic acid and transported to the liver for disposal. D) It is secreted in urine as a waste product of cellular respiration.
Which of these is a source of lactose?
a. potatoes b. milk c. sugar cane d. starch e. sugar beets