The inner mitochondrial membrane contains numerous inward folds called cristae, which greatly increase the surface area of this membrane. Because ATP is produced on the inner mitochondrial membrane, cristae enhance the ability of the mitochondria to generate ATP. What structure can be thought of as similar to these cristae?
A. Cartilage
B. Bronchiole
C. Finger-like projections of a human's small intestine
D. Spiracle
Answer: C
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In the Ames test for mutagenicity,
A) reverse mutations convert auxotrophs to prototrophs that survive. B) colonies are due to forward mutations that convert prototrophs to auxotrophs. C) cells are treated with mutagen and only cells with no mutations survive. D) cells are treated with excess amino acids and cells with mutations are killed. E) rat liver enzymes are present to protect cells from mutation.
The characteristic ____________________ of a radioisotope allows us to determine the age of rocks and fossils using
a technique called ____________________. Fill in the blank(s) with the appropriate word(s).
The element that is crucial to actual muscle contraction is
a. sodium. b. potassium. c. iron. d. magnesium. e. calcium.
Define paedomorphosis and allometric growth, and briefly explain how each contributes to the process of
macroevolution. What will be an ideal response?