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Tutor profile: Mariya E.

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Mariya E.
Online Private Science Tutor (Elementary, Middle School, High School, and College Levels)
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Questions

Subject: Russian

TutorMe
Question:

How can I learn to pronounce Russian words correctly?

Inactive
Mariya E.
Answer:

I can help you learn proper pronunciation of the Russian language by saying words that you may need help with over video for you to repeat after me. I am a native Russian speaker, so I do not have a foreign accent.

Subject: Writing

TutorMe
Question:

How to write a compound sentence without making it into a run-on, using commas?

Inactive
Mariya E.
Answer:

One of my favorite things about Spring is that everything is so fresh and green after a cold and dry winter, giving its observers a sense of hope that renewal is coming.

Subject: Biology

TutorMe
Question:

How to differentiate between (and remember) what hypotonic, hypertonic, and isotonic solutions are?

Inactive
Mariya E.
Answer:

This question is usually asked in the context of a red blood cell inside of a solution. And it is asking what will happen to the cell in each type of a solution. The first thing to do here is to pay close attention to the wording of the question. That will set up the foundation for answering this question correctly. It is asking about the SOLUTION. That's an important thing to remember because that means that the solution is either less concentrated, more concentrated, or the same as what's inside the cell. "Hypo" means it's less concentrated, "hyper" means it's more concentrated, and "iso" means it's the same. Naturally, the cell and the solution want to be balanced or have equilibrium, so the water will either go out of the cell or come into the cell to do so. The isotonic solution is the only one that won't change. Since the hypertonic solution is more concentrated, the water in the cell will want to go out to dilute the solution and the cell will shrivel up. And since the hypotonic solution is less concentrated, the water will want to go into the cell to dilute what's inside, so the cell will keep getting bigger until it bursts. So, there you have it! I hope this helps paint a picture in your mind so that you can easily answer this type of a question.

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