Search found 281 matches

by NS_Tutor_Andrew
Tue Jan 16, 2018 1:54 pm
Forum: General Discussion & FAQ
Topic: NS is WRONG!!on CHEMISTRY QBANK 4 # 12
Replies: 2
Views: 24

Re: NS is WRONG!!on CHEMISTRY QBANK 4 # 12

Hi PoincareConjecture,

You are correct -- but there's another error yet, because 20 x 10^-6 = 2 x 10^-5, not 2 x 10^-7. We'll fix this ASAP. Thanks for pointing this out!
by NS_Tutor_Andrew
Tue Jan 16, 2018 1:35 pm
Forum: Post your questions here about Next Step's MCAT books
Topic: Chemistry and Organic Chemistry Page 6 Question
Replies: 2
Views: 25

Re: Chemistry and Organic Chemistry Page 6 Question

Hi jpetrera, Thanks for the question! You are seeing that correctly and we will make a note to fix it in the next edition. However, an interesting fact is that for the purposes of the MCAT, you can often set up the Rydberg equation in whichever way will make the math easier for you to do, because th...
by NS_Tutor_Andrew
Sun Jan 14, 2018 8:44 pm
Forum: General Discussion & FAQ
Topic: QBANK Biochem Proteins & Enzymes #11
Replies: 1
Views: 41

Re: QBANK Biochem Proteins & Enzymes #11

Hi PoincareConjecture, Yes, this is a tricky question that draws on a less commonly known aspect of how enzymes work, although when you think about it, it's logical that they will have a very high affinity for the transition state. (The Wikipedia article on transition-state analogs is interesting re...
by NS_Tutor_Andrew
Sun Jan 14, 2018 8:38 pm
Forum: Post your questions here about Next Step's MCAT books
Topic: Physics CR Chapter #6 Air resistance equation
Replies: 1
Views: 23

Re: Physics CR Chapter #6 Air resistance equation

Hi ashleyeyoung5, You are correct that there is generally a (1/2) term in the equation. It looks like what's happening here is that the coefficient value they give as 0.2 already takes that into account, because the drag coefficient of spherical objects in air is generally more like 0.4-0.5, so the ...
by NS_Tutor_Andrew
Sun Jan 14, 2018 8:30 pm
Forum: Post your questions here about Next Step's MCAT books
Topic: Physics Ch4 Independent Question 5
Replies: 1
Views: 19

Re: Physics Ch4 Independent Question 5

Hi vgp1993, Excellent question! If I understand your reasoning correctly, that would result in an answer of 70 J, not 0 J, though, because you would still have to account for the 70 J of energy that the question describes as coming from out of the system. From the point of view of pure question-solv...
by NS_Tutor_Andrew
Tue Jan 09, 2018 10:07 pm
Forum: Post your questions here about any videos in the class
Topic: Lesson 6 video 4
Replies: 4
Views: 158

Re: Lesson 6 video 4

Hi Ariel, Before getting into a more detailed response, I think it might be useful to step back and make sure that the terminology is clear. I wasn't quite sure what you meant by "rotating" in the S configuration. Although we might mentally do some rotation to help us visualize the molecul...
by NS_Tutor_Andrew
Tue Jan 09, 2018 6:13 pm
Forum: Post your questions here about any videos in the class
Topic: Lesson 10 Video 5
Replies: 4
Views: 62

Re: Lesson 10 Video 5

Hi Ariel,

Of course! Sorry that fell between the cracks. Will reply tonight.
by NS_Tutor_Andrew
Mon Jan 08, 2018 5:10 pm
Forum: Post Questions About Exams and QBank
Topic: CARS QBank 3, Question 1
Replies: 1
Views: 53

Re: CARS QBank 3, Question 1

Hi Arielle, Thanks for the excellent question! Let's break this question down into two steps. First, we have to figure out what the passage means by a "consciousness-compromising condition" -- we can't just rely on our intuitions here. This is defined as a condition where a patient can sti...
by NS_Tutor_Andrew
Mon Jan 08, 2018 4:57 pm
Forum: Post Questions About Exams and QBank
Topic: FL4 PSY/SOC Q31
Replies: 3
Views: 310

Re: FL4 PSY/SOC Q31

Hi @lumosmaximus -- Excellent question! In a nutshell, CT and MRI aren't able to visualize abnormalities on the level of misformed proteins (which are really tiny and hard to distinguish from other structures). A full discussion of the physics of CT & MRI (as well as other imaging modalities lik...
by NS_Tutor_Andrew
Mon Jan 08, 2018 4:40 pm
Forum: Post Questions About Exams and QBank
Topic: Psychoactive Drugs
Replies: 1
Views: 42

Re: Psychoactive Drugs

Hi lumosmaximus, In a nutshell, what makes caffeine so special is that it's so common and is generally felt to be mostly harmless (I write as I'm polishing off my daily pot of coffee...). Nonetheless, caffeine dependence is definitely on the radar screen of researchers, and caffeine withdrawal is in...

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