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hoa [83]
3 years ago
9

If oil from the Canadian sands is so difficult to extract, why does Conoco Phillips bother?

Biology
1 answer:
Lunna [17]3 years ago
5 0

Answer:

Explanation:

Oil sand is an unconventional source of oil. It requires specialized technology and great expertise to win oil from associated waste materials.

The reason why some companies bother about such oil source is explained below;

  • Prevailing cost of oil in the world market makes it profitable to extract these oil from sands. A high cost of oil crude oil is a good cause to produce oil form oil sands.
  • Development of new technology can catalyze interest in profitable exploration from unconventional sources.
  • Economic policies can also favor the production of this source of oil.
  • Demand for oil in the market can jack up production levels that can also be met by oil from oil sand.

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Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Wh
Molodets [167]

Options for part A are as follows:

A) A mutation in the operator sequence

B) A mutation in the lac-Z gene

C) A mutation in the lac-Y gene

D) A super repressor mutation

Answer:

The correct answer:

Part a - A mutation in the operator sequence

Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part C. true.

Explanation:

part a:

If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.

part b:

The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part c:

RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.

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2 years ago
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almond37 [142]

Answer: A. In the electron transport chain, a series of reactions move electrons through carriers.

B. The products of the electron transport chain are H2O and either NAD or FAD.

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the best suitable statement is it transfers energy stepwise from one compound to another, The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria. Electrons are transferred from one member of the transport chain to another in a series of redox reactions.

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A function of the nucleus is D) Storing genetic material.
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I don’t get number 1 and 4
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I don't get it either I just want the brainy points lol

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