Media that can differentiate organisms based on colony appearance are
a. characteristic.
b. selective.
c. differential.
d. selective and differential.
Answer: C
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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?
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.
When electrons are equally shared between two atoms, a(n) ________ bond is formed
a. hydrogen b. polar covalent c. ionic d. nonpolar covalent
Trees alter runoff patterns, causing increased erosion and potential flooding
Indicate whether the statement is true or false