The single greatest reservoir(s) of carbon exist(s) in ____
a. the atmosphere
b. land food webs
c. the ocean
d. rocks and sediments
e. marine organisms
d
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Which one of the following structures is not found in all adult and larval tunicates?
A. incurrent siphon B. excurrent siphon C. gill slits D. notochord E. pharynx
Unexpected phenotypes can be the result of
a. altered metabolic pathways. b. a gene mutating in different ways in different individuals. c. an environmental effect during development. d. a post-developmental environmental effect. e. any of these.
Transgenic plants produced by biotechnology contain fewer introduced genes than altered plants obtained by traditional
breeding methods. a. True b. False
Body temperature can rise when a pathogen has infected the body. This high temperature is called a fever. How does a fever help protect the body?
A) The higher temperature promotes bacterial growth. B) The higher temperature promotes synthesis of important cellular enzymes. C) The higher temperature promotes virus replication. D) The higher temperature inhibits the reproduction of bacteria