The virulence of an organism may be enhanced by all of the following except
A. Its ability to spread through the tissues
B. Its ability to escape from the phagosome
C. Its ability to overcome body defenses
D. Its ability to produce exotoxins
E. Its ability to grow on artificial laboratory media
Answer: E. Its ability to grow on artificial laboratory media
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Twelve PGAL molecules form when six CO2 are attached to six RuBP molecules. Two of these PGAL molecules are needed to form a 6-carbon sugar. What is the fate of the ten remaining PGAL molecules?
a. They are degraded. b. They are converted back to carbon dioxide. c. They are stored as extra PGAL molecules. d. They are used during photorespiration. e. They are converted to RuBP molecules.
True wood is produced only by:
a. giant horsetails b. conifers c. accumulated sediments that have compacted over geologic time d. seed plants e. seedless vascular plants
Which of the following would be appropriately sterilized using UV radiation?
stainless steel surface in biological safety cabinet used for media preparation stack of plastic petri dishes, prior to pouring media flask of nutrient broth nutrient agar plates with lids
In what organelle does photosynthesis take place in algae and plants?
A. chloroplast B. mitochondrion C. ribosome D. chlorophyll E. lysosome