Chromosomes are aligned at the center of the cell during
a. anaphase.
b. metaphase.
c. interphase.
d. prophase.
e. telophase.
Answer: b. metaphase.
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According to researchers Parmesan and Yohe, how are living systems responding to anthropogenic
global warming?
a. All biomes are remaining intact and all are shifting their distributions northward. b. Some species are moving northward and others are not, so communities are being disrupted. c. All biomes are remaining intact, but some biomes are shifting their distributions and other biomes are not. d. Most plants are shifting their distributions northward, but most animals are not. e. Most animals are shifting their distributions northward, but most plants are not.
Increases in the predator growth rate are followed by
a. Increases in the prey growth rate. b. Decreases in the prey growth rate. c. No change in the prey growth rate. d. The prey growth rate is not affected by the predator growth rate.
A small mass of specialized muscle on the back wall of the right atrium, also known as the pacemaker, is medically known as what?
A) atrioventricular node B) cardiopulmonary node C) bundle of His D) sinoatrial node
The circulatory system in plants is composed of
1) Transportation and transpiration 2) Heart and blood 3) Xylem and phloem 4) None of the above