Rats learning to press a lever to receive food is an example of
A. avoidance.
B. operant conditioning.
C. habituation.
D. inoperant conditioning.
E. negative reinforcement.
B. operant conditioning.
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An extensive study was conducted on identical twins who were separated at birth. Among other things, the study showed that the individual from each pair who received better nutrition during childhood tended to score higher on standardized intelligence tests. This can best be described as an example of how
A. mutation alters phenotype. B. environment alters phenotype. C. environment alters genotype. D. mutation alters genotype. E. pleiotropic genes affect more than one trait. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about genotype and phenotype? 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?
Protons and neutrons are located in the ________ of an atom
Fill in the blank(s) with correct word
Sugar is translocated in phloem from a source, or an area of ____, to a sink, or an area of ____
a. low sugar concentration; high sugar concentration b. high sugar concentration; low sugar concentration c. positive water potential; negative water potential d. negative water potential; positive water potential e. low pressure; equally low pressure
Individuals with the progeria syndrome
a. number about one in eight million. b. will have an accelerated rate of aging. c. usually die in their teens. d. carry a mutant gene for a nuclear structural protein. e. are all of these.