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Veronika [31]
1 year ago
8

If the results of an experiment do not support a scientist's hypothesis, what should the scientist do next? O A. Revise the hypo

thesis based on the results and use it to design another experiment. B. Change the data so that they support the original hypothesis. OC. Abandon the research and investigate a different topic. OD. Accept that the investigation failed and publish the results for peers to review.​
Biology
1 answer:
Vsevolod [243]1 year ago
3 0

Answer:

A. Revise the hypothesis based on the results and use it to design another experiment.

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<u>Answer:</u>

<em>Colchicine is also known as mitotic poison. When it is added the separation of chromosomes of daughter cells are stopped. </em>

<u>Explanation:</u>

This is because the formation of spindle fiber is not allowed in the mitosis phase. Basically it is the process of arresting the mitosis at metaphase to study the chromosomes properly.

The addition of colchicine prevents the chromosomes to move to opposite poles. It makes the cell polyploidy. Hence the of addition of colchicine is the polyploidy of the cell.

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3 years ago
Give one example of an extrinsic homeostatic mechanism overriding an intrinsic homeostatic process.
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Answer:

Extrinsic regulatory mechanisms are external and depend on the firing of some factor outside the population itself. Among them are interspecific competition, food and space restrictions, very strong climatic variations, weathering and inharmonious relationships with other populations (parasitism and predatism).

Good examples of interspecific competition appear when rabbits, caves, rats compete for the same plant, or different fish and birds, such as the heron, vie for the same species of smaller fish. This is because these different species keep their populations in the same ecological niche. Competition is often so strong that some species eventually, as one example of an extrinsic homeostatic mechanism overriding an intrinsic homeostatic process is their disappearance or migration to other regions.

In this competition, the presence of adaptations among individuals in the population that promote better food search, speed, vision, and others can make the difference between elimination and survival.

8 0
3 years ago
What is a reversible Change in nature
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Answer:

The changes which can be reversed are called reversible changes. These are also called physical changes. Example- Melting of ice, Tearing of paper etc are physical or reversible changes.

Explanation:

4 0
3 years ago
B) Write about pest control? <br>​
andrezito [222]

Answer:

Pest control is helpful I guess...

Explanation: Pest control uses lots of chemicals and poison stuff to kill those vexing pests but most importantly it kills them its a dangerous job if you don't know what your doing.

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3 years ago
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Explain what you think would happen to an egg placed in salt water? Describe why this would occur.
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An egg placed in salt water will float!

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In normal tap water, an egg will sink because it's density is greater than the density of water. But, when salt is added to the water, it's density becomes greater than the egg's density. The term used to describe this is "buoyancy."

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