Which of the following classes of amino acids is buried within the folded structure of the protein?
a. Acidic
b. Basic
c. Nonpolar
d. Polar
Ans: c. Nonpolar
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From the figure above, what can we determine about the location of the food source?
A) The waggle dance in the top figure indicates that the food is directly under the hive. B) The waggle dance in the bottom figure indicates that the food is to the west of the hive. C) The waggle dance in the top figure indicates that the food is close to the hive. D) The waggle dance in the bottom figure indicates that the food is 90 degrees to the right of the Sun. E) The vigor of the waggle dance indicates the location of the food relative to the Sun.
When starting with a single molecule of glucose, how many times does oxidation occur during the
conversion of pyruvate to acetyl CoA in the process of cellular respiration?
a. 1 b. 2 c. 3 d. 4 e. 5
The white cliffs of Dover are composed mostly of foraminiferans shells. These organisms move by pseudopodia and feed by phagocytosis. Foraminiferan shells are made of which of the following?
a. Cellulose b. Calcium carbonate c. Chitin d. Peptidoglycan e. Silica
A feature that only mammals have is:
a. predatory behavior. b. internal skeleton. c. bilateral symmetry. d. a skeleton of calcium carbonate. e. hair.