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klasskru [66]
4 years ago
5

How do bacteria regulate transcription of these operons?

Biology
1 answer:
Semmy [17]4 years ago
7 0
Kindly see answers below:

1. operon is not transcribe• b.) lac operon: lactose absent• e.) trp operon: tryptophan present2. operon is transcribed, but not sped up by the positive control• a.) trp operon: tryphophan absent• d.) lac operon: lactose present, glucose present3. operon is transcribed quicklu through positive control• c.) lac operon: lactose present, glocuse absent
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3 years ago
Agricultural lands frequently require nutrient augmentation because
fenix001 [56]

The given is incomplete as the options are missing. The correct options for the given question are as follows-

(A) cultivation of agricultural land inhibits the decomposition of organic matter

(B) nitrogen-fixing bacteria are not as plentiful in agricultural soils because of the use of pesticides

(C) land that is available for agriculture tends to be nutrient-poor

(D) the nutrients that become the biomass of plants are not cycled back to the soil on lands where they are harvested

Answer:

Option (D)

Explanation:

In order to carry out agricultural practices, the soil must be rich in essential nutrients for the growth of crops. The soil fertility is a key role in the production of crops.

This agricultural land often requires a large amount of these nutrients and minerals because some of the nutrient minerals are converted into plant biomass which is then used up to produce energy in other sectors. So, the nutrients that were present in the soil are taken away and not transferred back into the soil. This means that the nutrient cycle gets affected. Due to this reason, there requires a constant supply of nutrients into the agricultural fields.

Thus, the correct answer is option (D).

8 0
3 years ago
Assume that a single layer of phospholipids coat the water in a beaker. which part of the phospholipid molecule will face the ai
jek_recluse [69]
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5 0
3 years ago
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Which of the following is not a type of fault?
icang [17]
I believe the answer would be <span>D.)  Abnormal</span>
4 0
3 years ago
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When the terminal phosphate is cut off of atp what is formed?
KiRa [710]

Answer:

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Explanation:

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7 0
2 years ago
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