Which of the following features of a membrane protein is (are) never used as a membrane anchor?
a. C-terminal glycosylphosphatidyl inositol (GPI)
b. An N-terminal myristoyl group
c. Prenyl and palymitoyl group additions
d. Oligosaccharide side chains
Ans: d. Oligosaccharide side chains
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Bladders on kelp function to anchor the thallus to the substrate
Indicate whether the statement is true or false
Burning coal produces sulfur dioxide in the atmosphere. When combined with rain that falls into bodies of water, this leads to
A. no change in the pH level of the water. B. an increase in pH level of the water. C. a decrease in the pH level of the water. D. a greater concentration of OH- ions in the water.
The movement of water and dissolved solutes
from the soil to the vascular cylinder is driven by
a. active transport. b. osmosis. c. endocytosis. d. simple diffusion. e. more than one of these
Where are the major deserts of the world located?
A) 30° north and south of the equator B) 23.5° north and south of the equator C) 45° north and south of the equator D) the equator