What is the dietary recommended daily allowance of protein for a person of average weight?
A. 44-60 g
B. 44-60 mg
C. 4,700 mg
D. 1,200 mg
Answer: A
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Parathyroid hormone increases phosphate reabsorption from the renal tubules
Indicate whether the statement is true or false
The pH optimum is an important factor in digestive enzyme activity because ________.
A. differences in pH in the digestive tract reflect which substrates are broken down at each location B. enzyme activity is lowest within this range, preventing substrates from being broken down too quickly C. it must reflect the pH of the blood in order for substrates to be safely absorbed D. it must be higher than the body fluid in which the enzyme is found in order to be effective
The phase in the cardiac cycle when the mitral valve is closed and the aortic valve is open is the
A) atrial systole. B) early diastolic filling phase. C) late diastolic filling phase. D) ventricular ejection of ventricular systole. E) dicrotic phase.
Bones, cartilage, and ligaments are tissues and organs of the skeletal system.
Answer the following statement true (T) or false (F)