Question

1. Which of the following best expresses the topic of the paragraph below? An amoeba can do an unusual mathematical trick: It multiplies by dividing. After it has grown to a certain size, the amoeba's single cell divides in half to produce two amoebas. In about a day, the two amoebas have grown to the point at which they are ready to divide and form four; the day after that, there are eight amoebas, and so forth. How many amoebas will there be at the end of the week? (Harold R. Jacobs, Mathematics: A Human Endeavor)

A. amoebas
B.cell division C.how amoebas reproduce themselves D. unusual tricks of nature

Answer 1

C. How amoebas reproduce themselves. 'Amoebas' is too vague of an answer, as is 'unusual tricks of nature', which is only mentioned once. Cell division is barely covered, instead, it mentions the math and science behind their reproduction.

Answer 2

C.how amoebas reproduce themselves

Step-by-step explanation:

The paragraph directs attention to how amoebas multiply themselves. In that respect, it explains that their cells divide in half to reproduce when they achieve certain size, and continue to do so.

The rest of the choices are incorrect since the paragraph does not describe amoebas or unusual tricks of nature in general, nor it provides details on how cells actually split.