Interphase is the part of the cell cycle when _____
a. a cell ceases to function
b. the spindle forms
c. a cell grows and duplicates its DNA
d. mitosis proceeds
C
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How do humans use red algae polysaccharides?
A. Thickeners B. Herbicides C. Adhesives D. Detergents
Answer the question using the accompanying figure. What does letter E represent?
a. different RNA molecules transcribed from a coding region of DNA b. the products of a PCR reaction in which the primers annealed to multiple sites c. the products of a PCR reaction performed without one of the nucleoside triphosphates d. the products of a PCR reaction that had more than two primers e. a DNA marker ladder
Comparing the evolution of domesticated dogs to the evolution of wolves over the same time period illustrates what relationship between artificial and natural selection?
A. In artificial selection, the magnitude of the selection pressure can be varied; in natural selection, it cannot. B. Artificial selection is more likely to produce maladaptive structures than natural selection. C. Artificial selection is slower than natural selection. D. Artificial selection cannot produce changes as large as changes produced by natural selection. E. Artificial selection is reversible; natural selection is not.
Samantha gets into an elevator in a large skyscraper, and the doors close. She hears no noise, feels no vibration, and sees no movement, but she nevertheless knows that she is on her way up. What specific part of her ear is allowing her to know that she
is ascending? A) stapes B) organ of Corti C) saccule D) utricle