What form of transport across the cell membrane does not require energy from the cell, but does require a transport protein?
A) diffusion
B) facilitated diffusion
C) active transport
D) endocytosis
B
Environmental & Atmospheric Sciences
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Where in a mammal would there be the highest concentrations of phosphorous?
a. liver and pancreas b. muscle tissues c. bones and teeth d. central nervous system e. hair and skin tissues
Environmental & Atmospheric Sciences
The Dew Point in Houston on March 3 at 6:00 a.m. is 38°F. This means that when the air temperature there reaches 38° F, at that time
A) the air will be very humid. B) dew will evaporate. C) water vapor in the atmosphere will condense. D) dew will freeze.
Environmental & Atmospheric Sciences
Which decade was the warmest on record?
A) 1930-1939 B) 1960-1969 C) 1990-1999 D) 2000-2009
Environmental & Atmospheric Sciences
North and South America connected approximately ________ years ago
A) 300,000 B) 3,000,000 C) 300,000,000 D) 3,000,000,000 E) 30,000,000,000
Environmental & Atmospheric Sciences