Water flow across the gills of fish that maximizes the efficiency of gas exchange is known as _____.
A. capillary movement
B. countercurrent exchange
C. deoxygenation
D. pharyngeal movement
E. osmosis
Answer: B
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The conversion of organic to inorganic matter is called co-metabolism
Indicate whether this statement is TRUE or FALSE.
The interaction of suspension and deposit feeders in muddy areas
a. is an example of mutualism. b. is an example of interference when sediment particles from deposit feeders' activity clogs suspension feeders' ability to feed and exchanges gases. c. demonstrates that deposit feeders can outcompete suspension feeders. d. demonstrates that suspension feeders outcompete deposit feeders. e. is an example of a keystone predator.
All prokaryotes are in the domain ________.
A. Bacteria B. Archaea C. Prokarya D. Prokaryotes are in different domains.
Which of the following scenarios exemplifies cancer therapy targeted toward a specific mutation?
A) A patient with leukemia receives chemotherapeutic drug that inhibits DNA synthesis. B) A benign tumor is surgically removed from a patient's kidney. C) A patient with melanoma receives a drug that targets a signal transduction pathway protein. D) A patient with two mutant tumor-suppressor alleles receives radiation and a chemotherapeutic drug that blocks mitosis.