Molecules that are similar in sequence among distantly related organisms, such as many transcription factors important in development, are said to be evolutionarily conserved
A. true
B. false
A
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When you use a field guide to identify a species by its appearance, you are applying the _____
A. morphospecies concept B. biological species concept C. ecological species concept D. evolutionary species concept
Define eugenics and discuss Francis Galton’s influence in the development of the fundamentally flawed ‘science.’ What will be an ideal response?
Which of the following lists of mass extinctions and eras is correct?
A. The Precambrian experienced 0, Paleozoic experienced 3, Mesozoic experienced 2, and the Cretaceous experienced 0 mass extinctions. B. The Precambrian experienced 0, Paleozoic experienced 2, Mesozoic experienced 3, and the Cretaceous experienced 0 mass extinctions. C. The Precambrian experienced 1, Paleozoic experienced 3, Mesozoic experienced 2, and the Cretaceous experienced 1 mass extinctions. D. The Precambrian experienced 2, Paleozoic experienced 2, Mesozoic experienced 3, and the Cretaceous experienced 0 mass extinctions.
When the substrate is bound to the enzyme, the shape of the enzyme may change slightly, leading to
A. an induced fit B. a great range of possible catalytic activities C. a greater supply of activation energy D. more permanent binding through intimate total contact E. more possible products of the reaction