Enable contrast version

Tutor profile: Megan M.

Inactive
Megan M.
MIT Microbiology and Environmental Science PhD with Policy and Teaching Background
Tutor Satisfaction Guarantee

Questions

Subject: Natural Sciences

TutorMe
Question:

What characteristics cause deep water in the ocean to circulate?

Inactive
Megan M.
Answer:

Deep ocean water circulates through 1.) salt and 2.) heat. This is called thermohaline circulation (thermo-meaning temperature) and (haline - referring to salt). Differences in saltiness of the water and heat of water determine where it will be in the water column. Salty, cold water is more dense and therefore sinks to the bottom whereas fresher, warmer water is less dense and moves to the top. This is how ocean circulation occurs and this affects Earth's climate! There are some really cool videos online that show this process using water tanks.

Subject: Environmental Science

TutorMe
Question:

What is the difference between r and k selected organisms?

Inactive
Megan M.
Answer:

R selected organisms have lots of offspring that do not require a lot of energy to produce. K selected organisms tend to have few offspring that are energy intensive. Examples of R selected organisms are mice, bacteria, weeds, and insects whereas K selected are elephants, humans, and whales.

Subject: Biology

TutorMe
Question:

Why do antibiotics not work for viruses?

Inactive
Megan M.
Answer:

Antibiotics do not work for viruses because of structural differences between bacteria and viruses. Antibiotics work by targeting structures within bacteria (usually the cell wall, cell structures that make DNA and RNA, or structures that make proteins). This is how antibiotics can stop the bacteria from growing or kill the bacteria. However, viruses have different structures from bacteria. Viruses have only DNA or RNA and a protein coat, which is different than the structures bacteria has. Because of those differences, the targets antibiotics use aren't available and can't stop or kill the virus. This is why if you have the flu, you shouldn't take antibiotics!

Contact tutor

Send a message explaining your
needs and Megan will reply soon.
Contact Megan

Request lesson

Ready now? Request a lesson.
Start Lesson

FAQs

What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Lesson" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.