A student viewing a cell with a microscop observes a cell wall, a cell membrane, and a nucleus. The presence of these structures indicates that the student is looking at a a (1) rabbit (3) worm (2) carrot (4) fly

Starting from a single individual, what is the size of a population of bacteria that reproduce by binary fission every 20 minutes at the end of a 2-hour time period? (Assume unlimited resources and no mortality.) A) 6 B) 18 C) 128 D) 512 E) 1,024

Which types of organisms are most vulnerable to overfishing, and why? A. Small fish that live a short time and reproduce quickly, since their population numbers are always highest. B.

How does fossil evidence determine the relationship of whale ancestors and their descendants

A planarian, the flatworm seen here, has the unique ability to when cut into pieces. a) fission b) fragment c) conjugate d) regenerate

Approximately 60 percent of the earth's surface is covered with the global oceans. true false

There are many different ecological and environmental conservation methods. Which is not a conservation method? A) water harvesting B) fishing seasons and limits C) limiting of clear cutting of forests D) wind and wave erosion on coastal areas

Explain when and how dire wolves became extinct.

Which of the following is true biased thinking promotes scientific ideas open - restricts scientific thinking creativity Foster scientific discovery clothes minus cultivate scientific exploration

Why do the lateral and polar views of chromosomes of the same cell in metaphase look different?

Which two words mean nearly the same thing