All of the following statements concerning birds are true EXCEPT
A. birds have small, relatively under-developed brains.
B. some birds do not have the ability to fly.
C. birds use the sun, stars, and the Earth's magnetic field to guide them.
D. birds have acute vision.
Answer: A
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Human males are the ________ sex.
A) homozygous B) homogametic C) heterogametic D) heterozygous
One study has shown that when more lions join a hunting group, _____
a. the success rate falls b. the success rate remains proportional c. the success rate increases d. the success rate is the same but there is more food on average e. more eventually drop out to be in isolation
A public health microbiologist plans to screen a particular bacterial species that was isolated from several patients in an intensive care unit to detect if any of the cells are penicillin-resistant mutants. What is the first step in conducting this experiment?
A. Test the cells to see if they can grow on media to which penicillin has been added. B. Perform an antibiotic susceptibility test on the cells using antibiotics other than penicillin that are known to be effective. C. Set up an Ames test to see if any of the isolates are mutagenic. D. Determine whether or not wild type cells of the same bacterial species are susceptible to penicillin.
The overall function of meiosis includes all of the following EXCEPT
A. gamete production B. reduction of chromosome number (from 2N to N) C. providing genetic variation in sexually reproducing organisms D. growth of the overall individual