Sociobiologists emphasized that _____ are in born, genetic factors in motivation.
Fill in the blank(s) with the appropriate word(s).
Answer: instincts
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An E. coli cell without a functional lacI gene is expected to _____
A) never produce ?-galactosidase B) always produce ?-galactosidase C) be unable to transport lactose into the cell D) be unable to metabolize lactose within the cell
The outcome of cleavage during embryonic development is the production of a
A. blastula. B. gastrula. C. neurula. D. substantially larger embryo. E. None of the choices are correct.
Which factor(s) determine a species' optimal foraging theory?
a. availability of parasites b. availability of predators c. energy needed to capture food and court mates d. energy that foraging provides e. energy needed to capture food and the energy that the food provides
What is an asteroid?
a. dust and small rock orbiting around the sun b. a ball of ice with a tail c. a small planet d. a small sun with weak solar emissions e. debris from a large planet