The proteins associated with DNA in chromosomes are ____
a. antigens
b. albumins
c. haptens
d. histones
e. centrioles
ANSWER: d
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The level of organization where factors such as
sunlight, rainfall, and temperature enter the picture is the a. organ system. b. ecosystem. c. biosphere. d. molecule. e. community.
Carolus Linnaeus
A. created the five-kingdom classification system. B. was the first person to attempt to systematically classify organisms. C. introduced the binomial system of nomenclature. D. developed a theory of evolution based on the similarities between organisms.
Which group of mammals exhibits the widest distribution and greatest diversity?
A. Marsupials B. Cetaceans C. Placentals D. Primates E. Monotremes
When Streptococcus pneumoniae are exposed to an antibiotic, the bacteria try to pump the antibiotic out of their cells. Which of the following mechanisms is most likely used by the Streptococcus pneumoniae to pump the antibiotic out of their cells?
A. active transport B. diffusion C. facilitated diffusion D. osmosis