An example of a member of the class Anthozoa of the phylum Cnidaria is:
a. Portuguese man-o-war.
b. jellyfish.
c. sea anemone.
d. sea wasp.
e. hydroid.
C
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Self-assembly has been utilized or potentially may be used for all of the following applications except
A) nanotechnology. B) electrical conductivity. C) biosensors. D) drug delivery systems. E) All of the above are examples.
Phagotrophy (Phagocytosis) is:
A. the movement of small organic molecules across the cell membrane B. the capture and ingestion of food particles by a cell C. the synthesis of organic molecules from inorganic molecules using light as an energy source D. the ability to use photosynthesis and osmosis or particle ingestion for nutrition
According to the pressure flow theory, sugars move in phloem because of ________
a. negative pressure from removal of sugars at sinks b. active transport by living sieve-tube and companion cells c. all of the choices d. internal pressure building up in sieve tubes at a source
Periderm is the functional replacement of the bark. Indicate whether the statement is true or false