Living organisms use oxygen to __________________
A) remove metabolic wastes
B) reduce heat production
C) release energy stored in the molecules of food
D) donate electrons for cellular metabolism
C
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Which of the following is a cell process that receives a stimulus?
A) neuroglia B) soma C) nerve fibers D) dendrites E) axon
Which of the following will increase the heart rate?
A. a rise in pH B. an increase in the level of carbon dioxide in the blood C. an increase in the level of blood oxygen D. an increase in blood pressure E. a decrease in the level of carbon dioxide in the blood
Match the following:
A) Energy B) Mass C) Weight D) Matter 1) Can be measured only by its effects on matter. 2) Anything that occupies space and has mass. 3) Although a man who weighs 175 pounds on Earth would be lighter on the moon and heavier on Jupiter, his ________ would not be different. 4) Is a function of, and varies with, gravity.
What is the effect of sympathetic innervation to the lungs?
A. Increased diameter of the bronchi B. Constriction of bronchioles C. Dilation of bronchioles D. Increased activity of the mucociliary elevator E. Contraction of smooth muscle in the bronchioles