Organisms that feed on dead organisms for nutrients are called
A. lithoautotrophs.
B. phototrophs.
C. saprobes.
D. autotrophs.
E. parasites.
Answer: C
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Cnidarians, such as __________________, have muscle fibers
A. clams B. earthworms C. jelly fish D. sea corals
Bathymetric charts represent the contour of the ocean bottom with contour lines that connect similar depths
Indicate whether the statement is true or false
John and all his brothers have no antibodies caused by non-functional B cells, thus they are highly
susceptible to bacterial infections. John and his brothers most likely have a condition called __________________. Fill in the blank(s) with the appropriate word(s).
Why do pseudogenes evolve so much more quickly than other genes?
A. High rates of recombination in pseudogenes are often subject to unequal crossing over. B. Pseudogenes are processed more quickly because there are no enzymes present to check for replication errors. C. Transposable elements target pseudogenes as a site of insertion. D. They are not subject to purifying selection because mutations have no functional consequence. E. Directional selection causes rapid change in their sequence.