What is the most likely role of the tests in a testate amoeba?
A. Provide motility
B. Concentrate nutrients
C. Enable adherence to surfaces
D. Provide protection
Answer: D
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A 36-year-old man entered the emergency department with bleeding and weight loss several weeks after returning from a trip to South America. A stool sample was taken and microscopi-cally examined. Barrel-shaped eggs with bipolar plugs were observed. The organism can be identified as:
a. T. trichiura. b. A. duodenale. c. N. americanus. d. S. stercoralis.
The coronary circulation is actually part of the systemic circulation.
a. true b. false
All of the following are examples of basic dyes except
A. nigrosin. B. crystal violet. C. safranin. D. methylene blue. E. carbol fuchsin.
In the sweet pea crossing experiment by Bateson and Punnet, the F2 generation had many more offspring with the phenotypes of purple flowers with long pollen (PL) and red flowers with round pollen (pl) than expected from independent assortment. This is because
A. in sweet peas, the alleles for flower color and pollen shape are on the same chromosome. B. in these sweet peas, there are always more PL gametes than there are pl gametes. C. In sweet peas, the alleles for flower color and pollen shape are next to each other on the same chromosome. D. In sweet peas, the allele for flower color is in the nuclear genome and the allele for pollen shape is on the chloroplast genome. E. All of the answers are correct.