Biology, 18.12.2019 02:31 michellestepp2001
Through which vascular tissue does water and nutrients get transported to reach the leaves during transpiration?
cuticle
parenchyma
xylem
phloem
Answers: 1
Biology, 22.06.2019 02:30
Are the earth's ocean floor and continents the same age geologically? why or why not?
Answers: 1
Biology, 22.06.2019 02:50
Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?
Answers: 1
Biology, 22.06.2019 09:30
Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?
Answers: 2
Through which vascular tissue does water and nutrients get transported to reach the leaves during tr...
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