Which of the following statements describes deoxyribonucleic acid (DNA)?
A. Within each cell is a nucleus that contains 23 matching pairs of rod-shaped structures.
B. the basic units of heredity.
C. a complex molecule shaped like a twisted ladder or staircase.
D. the set of instructions to construct a living organism.
Answer: C
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Controlled observations of behavior can have high ______ but may also have lower ______.
A. external validity, internal validity B. internal validity, external validity C. internal bias, external bias D. objectivity, subjectivity
A senior-level manager interested in helping employees achieve career goals is called a
A. Counselor B. Change agent C. Mentor D. Reverse mentor
In his book, why did Copernicus switch the positions of the earth and sun, placing the sun at the center of the universe?
a. To explain how lunar eclipses are possible b. To improve his ability to make astronomical predictions c. To provide proof for the Ptolemaic and Aristotelian concept of a final, equidistance sphere of fixed stars d. To eliminate the need for Ptolemy’s equants (hypothetical points)
Rachael asks Steve, "Do you remember my name?" When Steve says that he does not remember, Rachael says, "I'll give you a hint-it starts with an R." Rachael is providing Steve with a __________ to help him remember.
A. schema B. retrieval cue C. chunk D. mnemonic