What color indicates a positive result before the addition of zinc? After?
What will be an ideal response?
Ans:
Red indicated positive nitrate
yellow indicates that nitrite is not present in the medium and that zinc dust must be added to determine if the organism is nitrate negative or if the organism has reduced the nitrate to nitrite and then reduced to nitric oxide, nitrous oxide or nitrogen
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Nitrate (NO3-) reduced into ammonia (NH3) to produce energy for the cell is called
A) ammonification. B) dissimilative reduction of nitrate to ammonia (DRNA). C) nitrification. D) redox.
The plateau phase of an action potential in cardiac muscle cells is due to the ________.
A. efflux of K+ through K+ channels B. efflux of Ca2+ through fast Ca2+ channels C. influx of Ca2+ through slow Ca2+ channels D. influx of Na+ through fast Na+ channels
What structures in an animal's body would be the primary targets of genes for behavior? Check all that apply.
A. kidneys B. lungs C. brain D. muscles E. neurons
Even though cancer genomes are overall hypomethylated, explain why some genes are hypermethylated in cancer cells
What will be an ideal response?