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.
Answer: B
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The leading and the lagging strands differ in that _____
A) the leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction B) the leading strand is synthesized by adding nucleotides to the end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the end C) the lagging strand is synthesized continuously, whereas the leading strand is synthesized in short fragments that are ultimately stitched together D) the leading strand is synthesized at twice the rate of the lagging strand
Epidermal placodes are:
A. epidermal thickenings that give rise to integumental coverings such as feathers and hair B. epidermal thickenings that give rise to the lateral line system C. epidermal thickenings that lead to the formation of mesoderm D. epidermal thickenings that give rise to skin glands E. none of the choices provided
Defensins act against bacteria and fungi by permeabilizing cell membranes.
Answer the following statement true (T) or false (F)
Which bacterial genus feeds as a collective on other bacteria?
a. Vampirococcus b. Lysobacter c. Bdellovibrio d. Micavibrio