Which of the following terms describes NO3- ? NO2- ? N2O ? N2?
A) ammonification
B) denitrification
C) nitrification
D) nitrogen fixation
E) anaerobic respiration
B
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Which of the following is false regarding cnidarians?
A. They have an outer epidermis and inner endodermis, in between which is a gelatinous mesoglea. B. Cnidarians have a wider variety of cells types than sponges—allowing more sophisticated tissue function. C. Many cnidarians are predators rather than passive filter feeders D. Cnidarians have a separate opening for the anus and the mouth.
____ tissue serves as a scaffold in the developing embryo, but most of it is replaced by bone in adults
a. Bone b. Cartilage c. Tendon d. Cardiac e. Loose connective
Is the accompanying figure DNA or RNA? Is the circle closer to the 5' or 3' end?
What will be an ideal response?
Name and very briefly describe the three strategies for making vaccines
What will be an ideal response?