Amino acids go through a process called deamination whereby the nitrogen-containing group on the amino acid is removed and ammonia accumulates. In the liver, toxic ammonia is converted into ________, which can then be eliminated in the urine.
A. glucose
B. urea
C. ketone bodies
D. acetyl CoA
Answer: B
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A positively charged ion located in the intracellular fluid is
A. sodium. B. chloride. C. potassium. D. phosphate.
Which of the following statements is true?
A. People can survive for years by consuming formulas that contain all known vitamins. B. Vitamins are classified as being soluble in either alcohol or fat. C. Biotin is a vitamin-like substance for humans. D. Scientists are conducting research on plants to discover more vitamins that are essential for human beings.
It is recommended that children engage in at least _____ minutes of physical activity every day.
A. 30 B. 45 C. 60 D. 75 E. 90
One reason protein needs increase during pregnancy is to:
a. provide extra plasma proteins. b. spare carbohydrates for use as energy. c. allow for adequate fat storage to support lactation. d. ensure sufficient essential fatty acids.