What does the left y-axis of the graph represent?
a. ecological age
b. number of bird species
c. number of breeding pairs per 100 acres
d. stage of ecological succession
Answer: c. number of breeding pairs per 100 acres
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An organism with a chromosome number of n=7 is said to be haploid
a. True b. False
Which of the following descriptions of genetic information flow best illustrates the central dogma of biology?
A) DNA to RNA to protein B) RNA to DNA to protein C) protein to DNA to protein D) protein to RNA to DNA
Plant and animal food sources have been improved by ____________________ for thousands of years. Fill in the blank(s) with the appropriate word(s)
A microaerophile
A. needs normal atmospheric levels of oxygen. B. grows best in an anaerobic jar. C. requires a small amount of oxygen but won't grow at normal atmospheric levels. D. grows with or without oxygen.