In cases where global temperature increase results in increased resource availability,
A) population sizes are shrinking.
B) average body sizes are decreasing.
C) average body sizes are increasing.
D) average limb lengths are decreasing.
C
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Paramecium is a single-cell eukaryotic organism that can reproduce by mitotic cell division. Prior to the M phase of the cell cycle, which of the following must occur?
A. The cell must replicate its chromosomes. B. The cell must first be fertilized. C. The nucleus must divide. D. Chromatids must be separated. E. The nuclear envelope must disintegrate.
Which of the following is true regarding hagfish and lampreys?
A. They are characterized by a bony lower jaw. B. They are invertebrates. C. They are bony fish. D. They are vertebrates.
Which of the following describes the curve labeled “D” on graph?
a. a primary response to the initial antigen b. a secondary response to the initial antigen c. a primary response to an antigen distinctly different from the initial antigen d. a secondary response to an antigen distinctly different from the initial antigen e. none of the these
Most of the antibodies in the blood belong to the ________ class.
A. IgG B. IgM C. IgA D. IgE