The amount of time needed to sterilize materials using moist heat is (more/less) than the time needed to sterilize using dry heat
What will be an ideal response?
less
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In the nitrogen cycle, the bacteria that replenish the atmosphere with nitrogen are _____
A) Rhizobium bacteria B) nitrifying bacteria C) denitrifying bacteria D) methanogenic protozoans E) nitrogen-fixing bacteria
A certain gene is transformed into a plant cell for potential use as a vaccine delivery system. Upon performing a Northern blot, a good deal of mRNA for the gene is produced. However, the protein product for the gene is not observed. One explanation may be that the
A) plant cell recognizes and degrades the protein in the cytoplasm. B) plant ribosomes are not recognizing the mRNA translational initiation sites. C) mRNA is not stable in the plant cytoplasm. D) all of the above E) none of the above
How are parasitoids different from typical brood parasites?
a. they are usually not insects b. they affect only plants c. they lay eggs inside a host, which is eventually killed d. they fool another species into caring for their young e. they usually only affect the eggs of birds
Simple epithelial cells of the renal tubule have abundant __________ to increase the surface area for
reabsorption and numerous __________ to provide energy for actively transporting materials. a. microvilli; mitochondria b. cilia; mitochondria c. microvilli; Golgi complexes d. cilia; Golgi complexes e. cilia; capillaries