As John walked outside the ballpark, a foul ball sailed over the fence and came straight at him. He saw it, and before he could think of what to do, he had reflexively jumped out of the way. What part of the brain saved John from a nasty bump?
A) hypothalamus B) medulla oblongata C) pons D) midbrain
Answer: D
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Which of the following does NOT cycle
through an ecosystem? a. water b. carbon c. energy d. phosphorus e. nitrogen
Two kinds of mice live in the same area but one is black and the other is brown. Which of the following questions would be most valuable in determining if they are of the same species?
A. Do members of the two kinds mate with one another and have offspring that reproduce? B. Do the two kinds have other physical differences other than color? C. Are the brown mice eaten more often by owls than black mice? D. Do the brown mice climb trees more often than black mice?
Volumetric thirst is caused by (A)________, and is detected by (B)____________ in the kidney and heart.
a. (A) hypovolemia (B) high blood flow b. (A) hypovolemia (B) low blood flow c. (A) hypotonicity (B) high blood flow d. (A) hypertonicity (B) low blood flow
A monooxygenase can always be distinguished from a dioxygenase by incorporating only one oxygen atom from O2 into the substrate rather than both
Indicate whether the statement is true or false.