Which of the following is the best explanation for why vegetable oil is a liquid at room temperature while animal fats are solid?
A) Vegetable oil has more double bonds than animal fats.
B) Vegetable oil has fewer double bonds than animal fats.
C) Animal fats have no amphipathic character.
D) Vegetable oil has longer fatty-acid tails than animal fats have.
A
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Which of the following statements is true of histones?
A) Each nucleosome consists of two molecules of histone H1. B) Histone H1 is not present in the nucleosome bead; instead, it draws the nucleosomes together. C) The carboxyl end of each histone extends outward from the nucleosome and is called a "histone tail." D) Histones are found in mammals, but not in other animals or in plants or fungi.
What invention eventually led to current deep sea submersibles like Alvin?
a. Bathyscaphe b. Search-and-recovery vessels c. Diving bell d. Bathysphere
The above figure demonstrates
a. imprinting behavior. b. displaying instinctive behavior. c. feeding a social parasite. d. a learned behavior. e. all of these.
A basidium ________.
A. is found within basidiocarp (fruiting body) B. is club-shaped C. is produced at the tip of hyphae D. All of the choices are correct.