An explanation for a biological process that is substantiated by a large body of evidence is called a
A. reductionism.
B. prediction.
C. hypothesis.
D. systems biology.
E. theory.
Answer: E
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What is significant about the findings from "split brain" patients studied by Roger Sperry and his collaborators?
A. These studies revealed that the right and left hemispheres both function primarily to enable people to understand and produce language. B. These studies revealed that the right and left hemispheres both function primarily to enable people to describe qualities of objects such as shape and texture. C. These studies revealed that the left hemisphere functions primarily in understanding and producing language while the right hemisphere functions instead in describing qualities like shape and texture. D. These studies revealed that the right hemisphere functions primarily in understanding and producing language while the left hemisphere functions instead in describing qualities like shape and texture.
Which of the following statements about exotoxins is generally FALSE?
A) They are more potent than endotoxins. B) They are composed of proteins. C) They are resistant to heat. D) They have specific methods of action. E) They are produced by gram-positive bacteria.
Answer the following questions true (T) or false (F)
1. Lobe-finned fish gave rise to tetrapods that successfully moved onto land. 2. There are currently at least 2 dozen species who are candidates for membership in the Hominini (human-like primate) group. 3. The hominid group of primates has existed on Earth for approximately 6—7 million years.
Which process refers to dramatic phenotypic changes that sometimes occur in evolution, such as the appearance of
feathered wings during the evolution of birds? a. gradualism b. allopolyploidy c. macroevolution d. paedomorphosis e. microevolution