DNA is composed of double-ring nitrogenous bases, whereas RNA is composed of single-ring nitrogenous bases
Indicate whether the statement is true or false
FALSE
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How many liters of blood are distributed between the pulmonary and systemic circuits in a "typical" person? Assume 20% of the blood is in the lungs at any moment. If the cardiac output is 5 L/min, how long will it take a drop of blood to flow from the right ventricle to the left ventricle?
What will be an ideal response?
A high count of which of the white blood cells shown in the figure may indicate parasitic infection or autoimmune disease?
a) A b) B c) C d) D e) E
A person suddenly gaining significant amounts of adipose tissue can expect all of the following physiological changes except one. Which of the following is least likely to occur with a sudden and significant gain in adipose tissue?
A) increased angiogenesis and higher peripheral resistance B) higher peripheral resistance and higher blood pressure C) increased risk of developing atherosclerosis D) lower heart rate and reduced blood flow
Kidneys are often difficult to see without dissection because they are surrounded by a layer of fat. What is the significance of this fat?
A) It provides cushioning or padding for protection from sudden jolts or other injuries. B) There is no special significance; this fat stores energy as do other fat deposits in the abdominal cavity. C) This fat cools the kidneys during active filtration. D) It expands for storage of additional urine once the bladder is full; it acts as a sponge. E) None of the answers are correct.