A protein that has had its physical and chemical properties changed is said to be
A. denatured.
B. dysfunctional.
C. hydrolyzed.
D. saturated.
A. denatured.
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Suppose several genes are grouped together in a genome and the group results in a single enzyme. If one of these genes is mutated and the enzyme is no longer active, this gene must be part of _____
A) an intron B) an operon C) a repressor D) an activator E) an inducer
The reduced-bony-armor allele of the Eda gene is present in only about 1% of marine populations, but is predominant in freshwater populations of stickleback fish. What can we conclude?
_____ Bony armor increases fitness in the marine environment, but reduces fitness in the freshwater environment. _____ Freshwater fish with more bony armor have higher fitness than freshwater fish with less armor. _____ Bony armor is an environmentally-controlled trait, not a genetic trait. _____ The allele arose after the divergence of freshwater sticklebacks. _____ The freshwater environment caused a high rate of mutation in the DNA. 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 stickleback evolution? 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?
Which part of the amphibian life cycle prevents them from being fully terrestrial?
a. finding a mate b. reproduction c. respiration d. obtaining food e. locomotion
The basic building block of a protein is called a (n)
a. fatty acid. b. monosaccharide. c. amino acid. d. gene.