A cell that has three copies of every chromosome is
A) euploid.
B) triploid.
C) aneuploid.
D) tetraploid.
B) triploid.
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Trypanosoma and Leshmania species are transmitted by
A) direct person-to-person contact. B) insect vectors. C) contaminated food or water. D) contaminated needles and syringes.
The beginning of anaphase is indicated by which of the following?
A) Chromatids lose their kinetochores. B) Cohesin attaches the sister chromatids to each other. C) Cohesin is cleaved enzymatically. D) Spindle microtubules begin to polymerize.
Which of the following statements about the consequences of global warming are true? Check all that apply.
A. Global warming will cause a decrease in the incidence of diseases caused by mosquitoes. B. The frequency of El Niño events may increase as a consequence of global warming. C. Rising sea levels will be a consequence of global warming. D. The rate of global warming may be too great for populations to be able to adapt through natural selection. E. Agricultural production will increase.
Erythrocyte is another term for:
A) red blood cell. B) plasma protein. C) white blood cell. D) platelet.