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kogti [31]
3 years ago
5

Many bedbugs are highly resistant to insecticides, but the scientist’s bedbugs aren’t resistant. Explain why this happens based

on environment and selection of genes.
Biology
1 answer:
Nutka1998 [239]3 years ago
4 0

Wild Bedbugs become insecticide resistant because of the mutations and natural selections.

<h3><u>Explanation</u>:</h3>

As the huge amount of pesticides and insecticides are sprayed in the rooms for cleaning, the pests and insects like bedbugs dies in huge portions because of the toxin. But some of the bedbugs remain alive as they have mutations that help them to detoxify the toxins given, or bypass the metabolic processes so that the toxins don't hamper them much.

Now as the population becomes very small(bottle neck effect), the nature selects these organisms over the other to propagate more sufficiently and enormously. As the nutrients and supplies are also available, so the bedbugs don't suffer any lack of nutrition which can be a determining factor of their population.

Thus the wild bedbugs become resistant to insecticides while the experimental one remain succeptible to insecticides.

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Place the following steps of endomembrane system function in the correct order.
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Answer:

D

Explanation:

<em>The correct option here would be</em><em> D</em><em>.</em>

The endomembrane system refers to a group of membrane-based organelles whose primary function is to synergistically work together to modify, package, and transport lipids and proteins. The system includes organelles such as the lysosome, the nuclear envelope, the endoplasmic reticulum, and the Golgi apparatus.

For an endomembrane system function involving a protein, the protein would first of all need to be synthesized by the ribosome - the free ones or the ones attached to the rough endoplasmic reticulum. Thereafter, the synthesized protein would then be folded or packaged into transportable vesicles. The vesicles are then received by the Golgi apparatus which further modifies the proteins before transporting them accordingly.

Hence, the correct order of a typical endomembrane system function would be:

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  2. <em>Proteins are packaged into transport vesicles.</em>
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  4. <em>Proteins are modified by the Golgi apparatus.</em>
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You have a strain of bacteria that is defective for DNA glycosylase activity. You expose one culture of this strain to EMS and t
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Bacteria under successive rounds of selection may acquire genetic resistance to the treatment with mutagenic compounds including ethyl methanesulfonate (EMS).  

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Artificial selection is a process known to generate resistance of the organisms under treatment. For example, this type of selection has been reported to generate resistance to the treatment with different chemical compounds including mutagenic chemical compounds (in this case EMS), antibiotic drugs, etc.

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3 years ago
What term describes a plant's response to external stimuli like light, gravity, and touch?
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According to the research, a tropism is a plant's response to external stimuli like light, gravity, and touch.

<h3>What is a tropism?</h3>

It is the response that plants or certain organs of them make to a stimulus that comes from the outside.

There are different classes of tropisms according to the nature of the stimulus, gravitropism, phototropism, heliotropism among others.

Therefore, we can conclude that according to the research, a tropism is a plant's response to external stimuli like light, gravity, and touch.

Learn more about a tropism here: brainly.com/question/9267510

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8 0
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