TutorMe homepage
Subjects
PRICING
COURSES
SIGN IN
Start Free Trial
Molly M.
Tutor for Three Years
Tutor Satisfaction Guarantee
Public Health
TutorMe
Question:

How does the prevalence of a disease increase?

Molly M.
Answer:

The prevalence of a disease may increase if the duration of the disease is very long as is the case with chronic conditions. It may also increase due to a higher incidence rate. Also, improved methods of diagnosis which lead to more cases being detected and the availability of a more effective treatment which prolongs life are other possible reasons.

Biology
TutorMe
Question:

What is the is the difference between active and passive transport?

Molly M.
Answer:

Both active and passive transport are processes that move water, oxygen, and nutrients into cells and waste products out. However, there are difference between the two. For one, active transport requires energy in the form of ATP to pump molecules against the concentration gradient. That means from an area of low concentration to an area of high concentration. On the other hand, passive transport is the movement of molecules down the concentration gradient. That means from an area of high concentration to low concentration. Also, passive transport is mainly responsible for diffusion while active transport is responsible for endocytosis and the sodium/potassium pump.

Anatomy
TutorMe
Question:

Describe the causes and consequences of osteoporosis ?

Molly M.
Answer:

Osteoporosis is caused by the loss of bone density that occurs as one ages. Most people reach their peak bone mass by their 20's and from then on bone mass loss is faster than new bone can be made. The affected bones are much more susceptible to fractures and other symptoms may develop such as loss of height and a stooped posture as well.

Send a message explaining your
needs and Molly will reply soon.
Contact Molly
Ready now? Request a lesson.
Start Session
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 Session" 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.