Search found 121 matches

by NS_Tutor_Will
Tue Dec 11, 2018 5:06 pm
Forum: Post Questions About Exams and QBank
Topic: FL2 C/P Q54
Replies: 3
Views: 14

Re: FL2 C/P Q54

Hi Karolina, I am not sure about the references you found about Poiseuille's Law and ideal fluids, but ideal fluids are assumed to have a viscosity of 0. That would mean that the equation would result in denominator of 0 and would not give us a meaningful answer. Can you maybe send me some reference...
by NS_Tutor_Will
Tue Dec 11, 2018 8:19 am
Forum: Post Questions About Exams and QBank
Topic: FL2 C/P Q54
Replies: 3
Views: 14

Re: FL2 C/P Q54

Hi Karolina, Thanks for your question. It can be tricky to figure out which fluid equation to apply in which scenario, so I understand the confusion. With Poiseuille’s equation, we can calculate flow rate of a non-ideal fluid. ∆p refers to the pressure differential within the pipe, η refers to visco...
by NS_Tutor_Will
Sun Dec 09, 2018 9:04 am
Forum: General Discussion & FAQ
Topic: Validity Types and Cross Nigrescence Model
Replies: 3
Views: 66

Re: Validity Types and Cross Nigrescence Model

You might find it in chapter 7 of the psychology book, which covers motivation, attitude, and personality.

To be honest, though, I wouldn't worry too much about it. It's not a highly-tested concept, to be sure, so having a basic understanding of it is probably sufficient!
by NS_Tutor_Will
Sun Dec 09, 2018 9:01 am
Forum: General Discussion & FAQ
Topic: Biochemistry question Bank Query
Replies: 3
Views: 59

Re: Biochemistry question Bank Query

PFK-1 and PFK-2 are indeed isoenzymes. PFK-2 basically helps to activate PFK-1 when conditions are such that glycolysis is proceeding rapidly, or there is inhibition of PFK-1 by ATP, citrate, or some other substrate of metabolism. The reason PFK-2 is referred to as "bifunctional" is because it has t...
by NS_Tutor_Will
Thu Dec 06, 2018 4:45 pm
Forum: Post your questions here about Next Step's MCAT books
Topic: Biochem Chapter 5 Passage Question 3
Replies: 1
Views: 41

Re: Biochem Chapter 5 Passage Question 3

The basic idea here is that we can alter the charge on the polypeptides by using an eluant that has ions in it. The reason we'd want a "characteristic concentration" is because these will disrupt unique polypeptides differently. Perhaps one of them has enough positive charges that a much higher conc...
by NS_Tutor_Will
Thu Dec 06, 2018 10:57 am
Forum: General Discussion & FAQ
Topic: Biochemistry question Bank Query
Replies: 3
Views: 59

Re: Biochemistry question Bank Query

Hi Aru, It sounds like you have a solid understanding of ATP's role here, so I'll focus on ADP. We need to draw on the information presented in the question stem to answer this question. First, note that under low ATP-consuming conditions, the reverse of the reaction show will predominated. So, we w...
by NS_Tutor_Will
Wed Dec 05, 2018 9:47 am
Forum: Post Questions About Exams and QBank
Topic: NS FL3 C/P Q22
Replies: 0
Views: 34

NS FL3 C/P Q22

A student recently wrote us about this question: Since the pka of phenol is 10, wouldn't the molecule be protonated most of the time at physiological pH (7.4)? This would lead to it mostly only able to bind ADP as opposed to Mg2+-ATP, making B the correct answer You definitely raise an interesting p...
by NS_Tutor_Will
Wed Dec 05, 2018 9:44 am
Forum: Post Questions About Exams and QBank
Topic: NS FL3 B/B Q4
Replies: 0
Views: 23

NS FL3 B/B Q4

A student recently wrote us with a question: "I dont understand why it wouldnt be B if B shows the least methylation" In this case, we should look to predict some sort of comparison that can be drawn from passage information. So, despite the fact that B is the least methylated, it’s possible that we...
by NS_Tutor_Will
Wed Dec 05, 2018 9:41 am
Forum: Post Questions About Exams and QBank
Topic: NS FL3 C/P Q54
Replies: 0
Views: 27

NS FL3 C/P Q54

A student recently asked, "Isn't 30x.8 =24? Or am I missing something?" 30 x 0.8 is indeed 24, but unfortunately you accidentally substituted multiplication for division which is what this question requires. 30 / 0.8 is 37.5. So, answer choice B (37) is closest! Thanks for your question and good luck!
by NS_Tutor_Will
Wed Dec 05, 2018 8:17 am
Forum: Post Questions About Exams and QBank
Topic: FL 1, P Q10
Replies: 1
Views: 39

Re: FL 1, P Q10

Incidence can be reported as either the number of new cases of the disease per period of time OR as number of new cases of the disease per population (at risk) per time. It could alternatively be reported as "100 new cases per week" or it could be reported as 1 new case per 10,000 people per week. I...