Which of the following is not one of the effects of angiotensin II?
1.Constriction of arterioles to raise blood pressure quickly
2.Increased secretion of sodium ions into the distal convoluted tubule of the nephron
3.Increased thirst so that more water is brought into the body
4.Secretion of the hormone aldosterone from the adrenal cortex
2
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If, during protein starvation, the osmotic pressure forcing fluid into the blood on the venous side of capillary beds drops below the blood pressure, then
A. hemoglobin will not release oxygen. B. fluids will tend to accumulate in tissues. C. the pH of the interstitial fluids will increase. D. most CO2 will be bound to hemoglobin and carried away from tissues. E. plasma proteins will escape through the endothelium of the capillaries.
Indicate which of the following mechanisms are used by carnivorous plants to trap or attract prey: (check all that apply)
_____ Pitchers with slippery walls that collect water _____ Traps that are activated by touch _____ Sticky mucilage _____ Insertion of haustoria
As the human population size increases
Dibenzoylhydrazines are a category of molecules that have been used as insecticides. They work by blocking ecdysteroid receptors. How does this kill an insect?
A. The insect can no longer excrete nitrogenous wastes. B. The insect cannot molt. C. The chitinous exoskeleton is dissolved. D. The insect can no longer coordinate its movements.