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Fofino [41]
3 years ago
10

Which of the following provides evidence for past tectonic plate motions? *

Biology
1 answer:
timurjin [86]3 years ago
5 0

Answer:

all

Step-by-step explanation:

am pro

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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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Humans developed antibiotics to fight bacterial infections. however, some antibiotics are no longer efective in killing the bact
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Evolutionary theory predicted that bacterial resistance would happen. Given time, heredity and variation, any living organisms including the bacteria will evolve when a selective pressure, in this case an antibiotic is introduced. However it also gives doctors an patient some specific strategies for delaying even more widespread evolution of antibiotic resistance; these strategies include; avoid mild doses of antibiotics over long time periods, don't use antibiotics to treat viral infections, when treating bacterial infection with antibiotics, take all the pills, and also using combination of drugs to treat a bacterial infection.
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The microorganisms that inhabit the sludge at the bottom of a lake would live in which microbiota zone
Margaret [11]

Answer:

Explanation:

In a lake, oxygenic phototrophs produce new organic material as  well as O₂. If primary production rates are very high, the resultant  excessive organic matter production can lead to bottom-water O₂ depletion from respiration and the development of anoxic conditions.  This in turn stimulates anaerobic metabolisms, including  anaerobic respirations and fermentations.

Organic matter that is not  consumed in surface layers sinks to the depths and is decomposed  by anaerobes.

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The total area of land and water ecosystems and individuals needs to obtain food shelter home heating travel and waste absorptio
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B. And environmental problem should be correct
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Amphibians, reptiles, fish, birds, and mammals share
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Answer:

Bones. They are vertabrates, which means they have a backbone

Explanation:

Fish, reptiles, amphibians, birds and mammals all have bones

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