You place equal numbers of dark and light varieties of feeder crickets into a terrarium containing a species of lizard
After two days, you notice that the dark variety of the crickets was less common than the light variety. What process is
taking place on a small scale within the terrarium? Design an experiment in which you would try to determine if color or
taste is the primary factor responsible for the selective feeding of the lizards. What will be an ideal response?
Concepts to Consider: Natural selection, correct experimental design, and hypothesis
testing.
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In an experiment described in a chemistry lab book, the directions state that after mixing two chemicals (A and B) and waiting 5 minutes that A will be oxidized. This means that:
A. chemical A has lost electrons to chemical B. B. chemical A has gained electrons from chemical B. C. chemical A has gained energy in the form of heat from chemical B. D. chemical A has lost energy in the form of heat to chemical B. E. chemical A has reacted with oxygen.
Which of the following is likely to occur if you were to prevent cyclin B from associating with its cyclin-dependent kinase near the end of meiosis I?
A. failure to maintain sister chromatid cohesion at the centromere B. failure to form initiation complexes necessary for DNA replication to proceed C. suppression of DNA replication D. activation of DNA replication 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 know about cyclins and cell check points? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
You observe a microbiologist examining two plates and notice the pattern of colonies are nearly identical with the exception of a few colonies that are absent on one of them. The plates likely were produced by
A) positive selection culturing. B) replica plating. C) pour plating. D) streak plating. E) the Ames test.
The centromere of a chromosome separates during ________
A) prometaphase B) anaphase C) interphase D) prophase E) telophase