Media that can differentiate organisms based on colony appearance are

a. characteristic.
b. selective.
c. differential.
d. selective and differential.


Answer: C

Biology & Microbiology

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Biomagnification is a significant problem in aquatic communities. Levels of chemicals magnify (increase or accumulate) at each new link in a food chain. Use the following information to estimate the level of chemical X in a large-mouth bass. One alga can accumulate 1 unit of chemical X. Eachcopepod eats 15 algae. A minnow consumes 10 copepods, each large-mouth bass consumes 20 minnows.  

A.  15 units B.  20 units C.  30 units D.  150 units E.  300 units F.  3,000 units G.  20,000 units Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about biomagnification? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Which of the following characteristics do all viruses have in common?

A. They are all non-living. B. They all have DNA genomes. C. They all have a broad host range. D. They all infect eukaryotes. E. They all contain a capsid surrounded by a fatty envelope.

Biology & Microbiology

When electrons are equally shared between two atoms, a(n) ________ bond is formed

a. hydrogen b. polar covalent c. ionic d. nonpolar covalent

Biology & Microbiology

Trees alter runoff patterns, causing increased erosion and potential flooding

Indicate whether the statement is true or false

Biology & Microbiology