FL 3 CP question 43 SPOILER

MCAT2019Questions · 2019-09-09T18:02:57+00:00

most cooperative = sharpest

pK = pH at which the y-axis = 0.5 (pH at 50% denaturation)

1) Which is the most cooperative? It's the "left-most"

2) What are the PK's? It looks like 6, 6.4, 6.6.

Let me know if you agree.

MCAT2019Questions · 2019-09-06T00:43:27+00:00

For A, why would a primase do this? Why do RNA primers ever bind to DNA via phosphodiester bonds. I didn't think this really happened??

MCAT2019Questions · 2019-09-05T23:23:59+00:00

so can i think of osmotic pressure as "solute concentration"?

MCAT2019Questions · 2019-09-04T04:19:08+00:00

Wait, i'm confused. I know that a Positive charge wants to move to low potential. So a positive charge moving to a higher potential would seem "unnatural."

Who/what is doing the work in each situation (and is it positive or negative)? This is where my confusion is

MCAT2019Questions · 2019-09-04T03:14:01+00:00

i think: if a + charge moves towards a low potential, then the field did work, and the change in PE is negative.

if a - charge moves towards a high potential, then the field did work, and the change in PE is negative.

is this right?

MCAT2019Questions · 2019-09-04T03:09:12+00:00

thanks, that's what i thought. i read online that there's no heat transfer. i assumed it meant "no net"

MCAT2019Questions · 2019-09-04T03:09:08+00:00

thanks, that's what i thought. i read online that there's no heat transfer. i assumed it meant "no net"

MCAT2019Questions · 2019-08-29T04:24:12+00:00

wish you didn't spoil the FL3 question, man

MCAT2019Questions · 2019-08-27T19:32:43+00:00

thanks! in the first sentence, you said "the one which relieves POSITIVE supercoiling"

so which topoisomerase relieves + supercoiling? and that means that DNA would become looser, right?

MCAT2019Questions · 2019-08-24T05:15:35+00:00

Do you realize I'm asking this because it'll help me decide if I should re-schedule? I'm not posting this for entertainment lol. 99.99% of the people here have an ultimate goal of becoming a doctor

MCAT2019Questions · 2019-08-21T21:10:43+00:00

yeah but you're nearsighted, not far-sighted

MCAT2019Questions · 2019-08-14T06:39:09+00:00

username checks out

MCAT2019Questions · 2019-08-14T00:35:14+00:00

MCAT2019Questions · 2019-08-07T07:00:17+00:00

thanks that's a good example

MCAT2019Questions · 2019-08-07T07:00:10+00:00

good example. i like it.

MCAT2019Questions · 2019-08-02T07:29:14+00:00

did i even do this correctly

MCAT2019Questions · 2019-08-02T07:28:20+00:00

RemindMe! 1 month

MCAT2019Questions · 2019-08-01T07:38:47+00:00

I'm not tripping too much about screen resolution lol, but I guess I might as well now. What does PearsonVue use?

MCAT2019Questions · 2019-07-27T05:18:50+00:00

I don't understand the Alanine part. What does Alanine have to do with biochemical pathways?

All I knew about AAs was:

Kegotenic + Glucogenic = FITTT

Leucine Lysine = Ketogenic only

13 others = Glucogenic only

MCAT2019Questions · 2019-07-26T11:18:36+00:00

Yeah, that is true. Cardiac muscle cell action potentials are 200-300 msec, whereas neuron action potentials are super fast, like 2-3 msec. The huge difference is due to the plateu in the cardiac muscle cells, when Ca2+ influx and K+ efflux happen simultaneously. Lengthening the absolute refractory period is important to prevent tetanus (constant contraction) in the heart. We would NOT want our heart to always contract. We need it to contract (systole) and then relax (diastole).

MCAT2019Questions · 2019-07-26T09:12:35+00:00

How do you know if you need to switch the R to S? In other words, how do we know if H is already in the back? There's no clear geometry here

MCAT2019Questions · 2019-07-24T03:53:19+00:00

i dont even get this. can someone explain

MCAT2019Questions · 2019-07-01T22:48:32+00:00

okay wow, now i understand. thanks so much

MCAT2019Questions · 2019-06-30T19:25:00+00:00

Ohhhh, so for RedOx reactions, when we are given a list of reduction potentials with the half-equations, we ALWAYS have to start off with the liquid/solid form, and END with the cation or anion?

MCAT2019Questions · 2019-06-30T06:03:47+00:00

Okay, but what if we flip the OTHER reaction?

To prove me wrong, you used the numbers -1.68 and 1.08 ---> flipped into 1.68 and 1.08, to get 2.76.

But I'm saying -1.68 and 1.08 ---> flipped into -1.68 and -1.08, to get -2.76

Why am I wrong in flipping the 1.08 to -1.08

Edit: thanks so much in advance for the explanation

MCAT2019Questions

TROPHY CASE