Which community will need to plan for more schools? One with a population structure shaped like a(n) ________
A) inverted pyramid B) column C) pyramid D) box
Answer: C
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Based on the graph, what are the optimal temperatures for the human enzyme and hotsprings prokaryote enzyme?
A. The optimal temperature for the human enzyme is 30 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 60 degrees C.
B. The optimal temperature for the human enzyme is 40 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 72 degrees C.
C. The optimal temperature for the human enzyme is 46 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 79 degrees C.
D. The optimal temperature for the human enzyme is 35 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 65 degrees C.
If a cell contains 84 sister chromatids at metaphase of mitosis, how many chromosomes will be present in each
nucleus in late telophase?
a. 168 b. 84 c. 42 d. 21 e. cannot be determined from the information given
Answer the question using the accompanying figure. The muscle indicated by the letter ‘A’ is a(n) ____ muscle
a. flexor b. agonist c. depressor d. antagonist e. extensor
The incidence of Tay-Sachs disease has been reduced by 75% since the introduction of genetic screening in 1969. Which of the following is NOT an important component of this reduction in incidence of Tay- Sachs disease?
a. genetic counseling b. the fact that Tay-Sachs is caused by a dominant allele c. testing of embryos after fertilization d. birth control e. All of the above are important components of the reduction in incidence of Tay-Sachs disease.