Enable contrast version

# Tutor profile: Haley C.

Inactive
Haley C.
Tutor Satisfaction Guarantee

## Questions

### Subject:Basic Math

TutorMe
Question:

1/2 * 2/3 + (17-22) = ?

Inactive
Haley C.

We need to remember PEMDAS - parenthesis, exponents, multiplication and division (left to right), addition and subtraction (left to right). 1//2*2/3 + (17-22) = ? 1/2 * 2/3 + (-5) = ? Now, we need to figure out how to multiply fractions. We will multiply the top numbers, and then the bottom numbers to start. (1*2) / (2*3) = 2/6 which can be reduced to 1/3 Now we have 1/3 - 5 = ? This can be hard to conceptualize because of the fraction and negative number, but if we rearrange the equation, we can make it easier to think about. -1 * (5-1/3) = ? We will simply multiple our answer by -1 in order to remove the confusion. Next, we have to subtract a fraction from a whole number, which can be challenging. We know that 1/3 is less than 1, so let's try it this way. -1 * (4 + (3/3-1/3) = ? because 3/3 = 1 +4 = 5 -1 * (4 + 2/3) = ? -1 * (4 and 2/3) -4 and 2/3 is our answer!

### Subject:Chemistry

TutorMe
Question:

If in the reaction A + B <--> C + D, we increase the concentration of A significantly, what will happen to the reaction?

Inactive
Haley C.

This question focuses on Le Chatelier's Principle. The reaction is being stressed by increasing the concentration of substrate A, and thus the reaction will try to shift back to equilibrium by using up this extra concentration. The reaction will thus favor products C + D in response to an increase in the concentration of substrate A. If we instead reduced the concentration of substrate A, the reaction would shift in the opposite direction and favor the reactants A + B.

### Subject:Biochemistry

TutorMe
Question:

Compare and contrast the structure-function relationships of myoglobin vs hemoglobin.

Inactive
Haley C.

Myoglobin is a storage protein in the cytosol of cells, whereas the function of hemoglobin is to transport oxygen from the lungs to the tissues. Myoglobin is able to bind oxygen with greater affinity than hemoglobin, allowing for the transfer of oxygen to cytosol storage. It will demonstrate Michaelis-Menten substrate saturation behavior where at some point every available myoglobin is bound to an oxygen and thus is "saturated" Hemoglobin, on the other hand, demonstrates a sigmoidal "S" shape curve that indicates cooperativity. The main structural difference between myoglobin and hemoglobin is the number of subunits - myoglobin is a single polypeptide chain whereas hemoglobin consists of 4 subunits. "Cooperativity" means that as hemoglobin binds oxygen, it develops greater affinity to bind the next oxygen. For this reason, hemoglobin is often found either fully bound to 4 oxygen, or bound to none.

## Contact tutor

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

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.
BEST IN CLASS SINCE 2015
TutorMe homepage