Heme protein levels in red marrow and the spleen control _______________ synthesis.
Fill in the blank(s) with the appropriate word(s).
porphyrin
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Without water, our bodies would not be able to regulate temperature.?
Indicate whether the statement is true or false
Excessive intake of ________ should be avoided during pregnancy as excess can be teratogenic, causing serious birth defects.
A. vitamin D B. vitamin A C. riboflavin D. vitamin C
Which of the following statements is true?
A. Excessive intakes of vitamin D cause rickets in children. B. Skin can form previtamin D after being exposed to sunlight. C. Hair loss is the primary sign of vitamin D deficiency. D. Pellagra is the vitamin D deficiency disorder in adults.
Ethylene gas
A. speeds up ripening of fruit. B. increases the starch content of fruit. C. reduces respiration of fruit. D. causes foodborne illness in people who consume it from fruit.