The majority of protists are ____
a. anaerobic
b. aerobic
c. autotrophic
d. parasitic
e. photosynthetic
ANSWER: b
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The formulation of a model for a structure or for a process serves which of the following purposes?
A) It asks a scientific question. B) It functions as a testable hypothesis. C) It records observations. D) It serves as a data point among results. E) It can be arrived at only after years of experimentation.
Various techniques have been developed to isolate strains of bacteria carrying a particular mutation. One of them is, bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing an antibiotic that only kills growing cells. In this environment,
A. both wild-type and mutant cells are killed. B. both wild-type and mutant cells survive. C. wild-type cells survive; mutant cells die. D. wild-type cells die; mutant cells survive. E. only double mutants survive. 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 the bacteria? How does it relate to the question? · 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?
The form of RNA that cuts rRNA molecules is
A) tRNAs. B) pseudogenes. C) snoRNAs. D) microRNAs.
Biological evolution occurs in ____ when specific processes cause genomes of organisms to differ
from their ancestors
a. individuals b. populations c. communities d. phenotypes e. sub-species