The hypothesis that mitochondria and chloroplasts originated from the phagocytic activity of prokaryotes that was not
followed by digestion is called the ____.
a. theory of natural selection
b. endosymbiotic hypothesis
c. ribozymes-first hypothesis
d. Oparin-Haldane hypothesis
e. stromatolite hypothesis
ANSWER: b
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A population's carrying capacity _____
A) may change as environmental conditions change B) can be accurately calculated using the logistic growth model C) generally remains constant over time D) increases as the per capita growth rate (r) decreases E) can never be exceeded
Which of the following is carpel composed of?
a. stigma, anther, and filament b. stigma, style, and ovary c. anther, filament, and ovary d. style, stigma, and filament
Which of the following carry impulses toward the cell body of a neuron?
Axons Dendrites Glial cells Schwann cells
Ventilation includes
A. inspiration only. B. both inspiration and expiration. C. expiration only. D. the volume of air that can be exhaled. E. the transportation of oxygen to cells in the body.