Enable contrast version

Tutor profile: Jessica K.

Inactive
Jessica K.
B.S. in Biomedical Sciences w/ Honors, Current Medical Assistant Student, Teaching Assistant for 3+ years
Tutor Satisfaction Guarantee

Questions

Subject: Inorganic Chemistry

TutorMe
Question:

Reaction A has the following scheme: A + B ---> 2 C At a constant temperature, when the concentration of A is doubled, the reaction rate quadruples. When the concentration of B is doubled, the reaction rate doubles. What is the reaction order with respect to each reactant and the overall reaction order for Reaction A?

Inactive
Jessica K.
Answer:

The reaction order with respect to reactant A is 2, meaning the rate is proportional to the square of [A]. The reaction order with respect to reactant B is 1, meaning the rate is directly proportional to [B]. The overall reaction order is 3 (third order) which is the sum of the two individual orders.

Subject: Biochemistry

TutorMe
Question:

Protein A is marked at 120 kDa on a native gel. When run on a non-reducing SDS-PAGE, 1 band at 120 kDa appears and when run on a reducing SDS-PAGE, 1 band at 60 kDa appears. What is the quaternary structure of the protein and what type of bonds hold its subunits together?

Inactive
Jessica K.
Answer:

Protein A is a homodimer with its subunits linked by disulfide bonds. On a native gel, no denaturing or reducing agent is present so a protein will keep its 3D conformation and quaternary structure. When only a denaturing agent (SDS) is added to the gel, the 120 kDa protein remains intact, meaning the subunits are not held together by weak intramolecular interactions such as hydrogen bonding. However, when denaturing and reducing agents are added to the gel, the protein separates into 2 identical subunits, indicating the dimer subunits are held together by disulfide bonds which are broken when reduced.

Subject: Anatomy

TutorMe
Question:

A patient comes into the ER complaining of a pain in their right upper quadrant, weight loss, jaundice, nausea, and dark urine. What is the structure that is likely blocked and what is it's normal function in the body?

Inactive
Jessica K.
Answer:

Based on the location of the pain and jaundice, the common bile duct is most likely obstructed. This duct normally delivers bile stored in the gallbladder (produced in the liver) into the duodenum for lipid digestion. When blocked, bilirubin, a waste-product found in bile, builds up in the bloodstream and results in jaundice.

Contact tutor

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

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.
BEST IN CLASS SINCE 2015
TutorMe homepage
Made in California by Zovio
© 2013 - 2021 TutorMe, LLC
High Contrast Mode
On
Off