Search found 57 matches

by NS_Tutor_Yuqi
Sun Jul 12, 2020 2:03 pm
Forum: General Discussion & FAQ
Topic: Genetic Question: Different scenarios
Replies: 2
Views: 709

Re: Genetic Question: Different scenarios

Hi! Is there any other information that's provided? From the answer choices you've given, it seems that we're dealing with an X-linked recessive disorder here, since an autosomal disorder would lead to a 0% chance that any offspring would have it, and a dominant disorder would render it impossible f...
by NS_Tutor_Yuqi
Sun Jul 12, 2020 1:51 pm
Forum: General Discussion & FAQ
Topic: Chemistry Question: shouldn't the blue litmus paper remain blue when COO- reacts with HCl?
Replies: 5
Views: 1099

Re: Chemistry Question: shouldn't the blue litmus paper remain blue when COO- reacts with HCl?

Hi! Just to clarify, are you asking about the status of the litmus paper when COO- reacts with HCl or with H20? When HCl is added, the litmus paper should turn red as per your reasoning in the original post. However, if H2O is being added to COO-, you're essentially just diluting a basic solution, s...
by NS_Tutor_Yuqi
Sun Jul 12, 2020 1:40 pm
Forum: General Discussion & FAQ
Topic: Vehicular vs positive vs negative control
Replies: 7
Views: 1768

Re: Vehicular vs positive vs negative control

Unless there is more context information that is needed to answer this question, then you're right that a sphere not being handled would not be a positive control. Where did you find this question? A vehicular control is a type of negative control, where you're controlling for the effects of the met...
by NS_Tutor_Yuqi
Sat Jul 04, 2020 4:30 pm
Forum: General Discussion & FAQ
Topic: Le Chatelier's Principle: Why is my reasoning incorrect?
Replies: 1
Views: 2226

Re: Le Chatelier's Principle: Why is my reasoning incorrect?

Hi! I think the main thing that will help clear this up for you is remembering that pH is a direct measure of H+ concentration. Therefore, answer choices that directly impact H+ will have an immediate effect on pH, while choices that impact other components in the buffer system will have to go throu...
by NS_Tutor_Yuqi
Sat Jul 04, 2020 3:39 pm
Forum: Post your questions here about Next Step's MCAT books
Topic: Stoichiometry/Percent Yield (Chem p46)
Replies: 3
Views: 859

Re: Stoichiometry/Percent Yield (Chem p46)

Hey! I've attached a screenshot of my textbook just to make sure that our versions are the same. If they are, then the 3.33 value is the theoretical yield, or the max amount of product that you will be able to get from this reaction. However, the question stem tells us that the actual yield is 1.31,...
by NS_Tutor_Yuqi
Sat Jul 04, 2020 3:26 pm
Forum: General Discussion & FAQ
Topic: exonuclease activity: 3'-5 prime application question?
Replies: 3
Views: 838

Re: exonuclease activity: 3'-5 prime application question?

Hi! Could you clarify for me what the point of confusion was with this question? (I'm assuming you're asking why B is the correct answer). An exonuclease can only remove the last added nucleotide of the growing strand. Since it only has 3'-5' activity, then it is only able to remove something at the...
by NS_Tutor_Yuqi
Sat Jul 04, 2020 11:56 am
Forum: AAMC Resources
Topic: Questions Qpack 1 and 2 AAMC: THank you!
Replies: 3
Views: 944

Re: Questions Qpack 1 and 2 AAMC: THank you!

Just a note that we are not looking for the answer that is caused by kidney failure, but rather the one that would lead directly to kidney failure. But other than that, I agree with your reasoning!
by NS_Tutor_Yuqi
Sun Jun 28, 2020 6:51 pm
Forum: Post Questions About Exams and QBank
Topic: NS FL3 B/B Q2
Replies: 3
Views: 1116

Re: NS FL3 B/B Q2

Hey! I read over the NS answer explanation for this and I feel like they went into way more detail than was actually necessary for solving the problem. You won't actually need to draw a punnet square in order to figure out the answer. We know from the question stem that disjunction occurs in 1/130 o...
by NS_Tutor_Yuqi
Sun Jun 28, 2020 6:22 pm
Forum: Post Questions About Exams and QBank
Topic: NS FL4 C/P Q8
Replies: 4
Views: 1520

Re: NS FL4 C/P Q8

Hey! I see what you were getting at by trying to match Formula 2 with Formula 1. However, the passage doesn't indicate that the first formula is necessarily the more "correct" one, and therefore the one that you want to imitate. Instead, it seems that the two formulas are serving two different purpo...
by NS_Tutor_Yuqi
Fri Jun 26, 2020 7:52 pm
Forum: General Discussion & FAQ
Topic: Clarification
Replies: 1
Views: 627

Re: Clarification

Your mind should automatically consider transcription and translation, as well as how each of those processes are regulated. However, it's always important to consider the context provided by the passage and question to determine exactly what the question is asking. Southern blotting often is used t...