Some animals are facing extinction as a direct result of deliberate efforts to exterminate them because of their
perceived harm to economically useful species. Examples of these include:a.
cheetahs and rhinos.
b. passenger pigeons and cheetahs.
c. prairie dogs and rhinos.
d. rhinos and macaws.
e. mountain lions and wolves.
e
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If a strain of bacteria had a mutation that blocked expression of the lac repressor, what would you expect as a result?
A. The mutant strain would outcompete wildype strains, since it could always utilize lactose. B. The mutant strain would grow at the same rate as wildtype if lactose was not present. C. The mutant strain would waste energy producing enzymes in the absence of lactose. D. The mutant strain would act the same, because it would still require lac activator protein to turn on. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the lac operon? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
Thermotogae can grow anaerobically on which of the following?
A. Protein digests and carbohydrates B. Cellulose C. Methane and methanol D. Lignin
If S. niagarae did evolve into S. yellowstonensis this would be an example of which of the following?
a. Directional selection b. Stabilizing selection c. Disruptive selection d. Artificial selection
Jurassic Park is possible in theory but not in reality. Why?
A. There is not enough space on this Earth for dinosaurs B. There is not a similar organism alive in which to put the DNA C. At best, we can only get a few fragments of dinosaur DNA and we would need the entire genome to create a dinosaur