If a small droplet of triacylglycerol molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____.
A. a charged end and a noncharged end
B. three fatty acid molecules, all pointing in different directions
C. two fatty acid molecules pointing in different directions
D. both a saturated fatty acid and an unsaturated fatty acid
E. two charged ends
Ans: A. a charged end and a noncharged end
You might also like to view...
Food chains are sometimes short because _____
A) only a single species of herbivore feeds on each plant species B) local extinction of a species causes extinction of the other species in its food chain C) most of the energy in a trophic level is lost as it passes to the next higher level D) predator species tend to be less diverse and less abundant than prey species E) most producers are inedible
The phylum of green algae is:
a. Rhodophyta. b. Chlorophyta. c. Anthophyta. d. Dinophyta. e. Phaeophyta.
The light independent reactions of photosynthesis take place in the stroma
1.True 2.False
Bovine spongiform encephalopathy is an example of a prion disease
Indicate whether the statement is true or false