Which of the following choices lists the organs of the bird digestive system in the correct order, from first to last contact with food material?
A) esophagus, stomach, gizzard, crop, intestine, anus
B) esophagus, gizzard, crop, stomach, intestine, anus
C) esophagus, crop, stomach, gizzard, intestine, anus
D) esophagus, crop, gizzard, stomach, intestine, anus
Answer: C
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Some cells have several nuclei per cell. How could such multinucleated cells be explained?
A) The cell underwent repeated cytokinesis but no mitosis. B) The cell underwent repeated mitosis with simultaneous cytokinesis. C) The cell underwent repeated mitosis, but cytokinesis did not occur. D) The cell had multiple S phases before it entered mitosis.
Taxonomy can be described as a system that:
a. classifies, names, and identifies microor-ganisms in a consistent manner. b. classifies microorganisms, based on their genetic makeup. c. classifies microorganisms, based on their phenotypic makeup. d. classifies microorganisms, based on their cellular and colonial traits.
In Arabidopsis plants, about 10% of its genome is devoted to processes tied to which molecule?
A. auxin B. ubiquitin C. rubisco D. phytochrome E. gibberellins
An outcome of Engelmann's experiment was to help determine the relationship between _____
A) wavelengths of light and the rate of aerobic respiration B) wavelengths of light and the amount of heat released C) wavelengths of light and the rate of photosynthesis D) the concentration of carbon dioxide and the rate of photosynthesis