An important characteristic of urine is its specific gravity or density, which is ________
A) less than water
B) much higher than water
C) the same as water
D) slightly higher than water
Answer: D) slightly higher than water
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Angiotensin II stimulates the adrenal cortex to release aldosterone
Indicate whether this statement is true or false.
Extensive dinosaur faunas inhabited Arctic regions well beyond the polar circle. We know that northern regions were warmer during the Mesozoic than they are now, and clearly they were warm enough for dinosaurs
But Arctic winters would have had long periods of dim light (twilight) in the Mesozoic, as they do now. How might dinosaurs have responded to the seasonal changes in day length in the Arctic?
Which of the following hormones directly stimulates the development of male secondary sex characteristics?
A. Inhibin B. Follicle stimulating hormone C. Estrogen D. Testosterone E. Luteinizing hormone
Which letter is associated with the line that is a thin protein structure that serves as an attachment site for thin filament ends?
A. Z B. H C. M D. I E. A