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jeyben [28]
3 years ago
15

You are the agricultural science consultant to a large corporate farm that grows 7,000 acres of wheat on land adjoining the medi

terranean sea. just before the wheat matures, all the wells used for irrigation water run dry. the farm manager wants to irrigate the fields with water drawn from the mediterranean sea. from previous tests, you know that the solute potential of root tissues taken from wheat is -11.13 bars. you test the seawater and determine its solute potential to be -24.26 bars. what will you advise the farm manager and why
Biology
1 answer:
olga nikolaevna [1]3 years ago
7 0
<span>I will advise the farm manager not to use the sea water for irrigation as the sea water is of lower water potential than the roots of the wheat. If sea water is used to irrigate the fields, all wheat plants will die from dehydration as water will move out from the roots to the surrounding because a potential gradient is present between the root tissues and the soil.</span>
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g A mutation occurs upstream of gene A in the region encoding the ribosome binding site, making it bind more weakly to the ribos
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it is expected that the mutation results in a reduced initiation of translation and thereby decreasing the level of the protein A, while it does not change the level of mRNA A

Explanation:

Translation in bacteria starts with the formation of the initiation complex which is composed of the small ribosomal subunit, the messenger RNA (mRNA), initiation factors and the initiator transference RNA (tRNA) containing N-formyl-methionine. The small ribosomal subunit binds to a polypurine stretch of variable length in the mRNA called 'the Shine-Dalgarno sequence'. A mutation in this sequence reduces the affinity of the ribosome for the mRNA, thereby, in this case, decreasing the level of protein A. Since transcription occurs before translation, it is expected that this mutation does not change the level of expression of the mRNA A.

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