Which of the following correctly describes membrane proteins?
A) They are suspended on the surface of the membrane.
B) They are partly embedded in the bilayer.
C) They pass completely through the bilayer.
D) Any of the above, depending on the specific membrane protein.
D
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Research done in Oregon and California suggests that salvage logging ________
A) has no effect on the severity of wildfires B) decreases long-term timber yield by more than 60% C) causes increased erosion D) eliminates wildfires from forests E) tends to produce more severe wildfires
Sodium bicarbonate has sodium, hydrogen, carbon and oxygen atoms in the ratio 1:1:1:3. What is the correct formula for sodium bicarbonate?
A) NaBiCO3 B) NaHCO3 C) SoHCO3 D) none of these
Which 19th-century scientist developed the following equation that determines the discharge of an aquifer?
A) Charles Lyell B) Alfred Wegener C) Louis Agassiz D) Henri Darcy
The earliest permanent __________ colony in North America, Jamestown, was founded in 1607 in what became Virginia.
-Canadian -French -Spanish -American -British