MCAT 2002 form BG

[Tweetie_bird]

****ty, just plain ****ty. What did y'all think about it? I can't believe how crappy that test was. All the stuff I studied....I might as well not have studied with the way the test was made. There would be no difference in scores.

Few quick things about specific questions:

1. The question about a gene increasing in frequency, and a chart was given. I believe the question was "when does the Heterozygote frequency increase most...." or something like that. I don't even remember what I picked, but what was the answer?

2. The thing about a parachute dropping something to a bunch of hikers on ground. The plane is going 100 m/s and is 500m above ground. What horizontal distance should they be away from the hikers to make sure that the package falls within their reach? I guessed--500m. What the hell was that?

3. Insulin most likely looks like--oxytocin, epinephrine, cortisol and something else. I picked Epi b/c I assumed it was a peptide hormone and works through second messenger much like Epi. Is that even right?

4. Why does something in water travel faster than in air? I picked the answer about how water molecules are closer together, and air molecules are further apart. Is that right?

5. The whole diarrhoea passage! EEK! Was that a bacteria or was it a virus?? I picked Parasitic Animal (b/c it lived in the villi of the intestines and replicated there..therefore, it was parasitic.) Also, the RNA transcript found in it....did it belong to the bacteria or a virus within it?? I picked the latter b/c when gene sequences were compared across different species of that bacteria, nothing was found in common. Therefore, it would have to be a virus. Plus, they said that cell wall antibiotics didn't work on it...which means resistance could be conferred upon the bacteria by the virus.
I hope I have this right.

Please...help me calm my fears! <img border="0" title="" alt="[Frown]" src="frown.gif" />

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[Medical123]

•••quote:•••Originally posted by I am Tiger Woods:
•I initially had b but with 5 seconds left, switched it to a. I guess my reasoning was O3 is a product in reaction a, so wouldn't that contradict the claim that it helps breakdown ozone? Plus, the BrCl just looked odd to me. I dunno. Oh well, the more I think about this exam, the worse I'm feeling, so I think I'll stay away from this thread. •••••You know, you could be right on that question. I really wish I had more time to go over the answers and look for stupid mistakes. I had form BH, but I had a lot of the same questions that you guys did. Did you all have to switch back and forth from tables and graphs to questions? I found that really annoying and to be a real time-waster.

 

[RT]

•••quote:•••Tweetie_bird: Too bad i missed such an easy question...but ...did the passage not say anything about it going just to aldehyde? I guess I am beating a dead horse. ••••Tweetie, I like your nick. The question to me wasn't easy at all. It alone took the last and remaining 5 minutes of my time. I could've used those 5 mins to check other things.

 

[LittleMD]

I agree with Tiger Woods. I used the same logic as him and chose (a), since the presence of the Br radical not only breaks-up but also creates ozone. Termination of the free radical propagation will still destroy O3 if the final product is O2 with no intermediate steps creating O3.

 

[Tweetie_bird]

•••quote:•••Originally posted by Charlie:
• •••quote:•••Tweetie_bird: Too bad i missed such an easy question...but ...did the passage not say anything about it going just to aldehyde? I guess I am beating a dead horse. ••••Tweetie, I like your nick. The question to me wasn't easy at all. It alone took the last and remaining 5 minutes of my time. I could've used those 5 mins to check other things.•••••Thanks for liking my nick.
True Charlie, but the way I look at it...if I would have read the passage a bit closer, I would have seen that CrO3 oxidizes aldehydes...and the only product from ox. aldehydies is COOH. Therefore it was an easy gimme. I am feeling really scared that I may have to do the MCAT again....I have missed such silly questions like "what is leather made from?" anybody else getting that gloomy feeling?
Is there such a thing as MCAT Post Traumatic Disorder?

Tweetie

 

[Medical123]

Tweetie,

You are not the only one who feels that way. Though I am getting that sinking feeling, I am trying to remain optimistic or else I will be climbing the walls between now and June. There were 77 questions on each section and we have only discussed a fraction of them. I am sure that just about all of us made some silly mistakes. Hopefully, it will all balance out in the end. Also, try to remember that we are only guessing and speculating. Who the heck knows what was behind the minds of the MCAT writers and what their reasoning was for some of these answers?
Let's just hope all of us did well and will be entering medical school next year.

 

[Tweetie_bird]

I'll Amen to that. Thanks for making me feel better, Medical. I hope your predictions are true.

Tweetie

 

[RT]

•••quote:•••Originally posted by Tweetie_bird:
I am feeling really scared that I may have to do the MCAT again....I have missed such silly questions like "what is leather made from?" anybody else getting that gloomy feeling?
Is there such a thing as MCAT Post Traumatic Disorder?••••I partly understand how you feel. To me, regardless of my final scores, I'll still be grateful for having survived the long process of preparing for the MCAT. It wasn't meant to be easy in the first place. A lot of premeds took it more than once, more than twice even. As long as we worked extremely hard for it, knowing that we gave our best within the allotted time allows space for self-acceptance and self-congratulatory comments.

Taking it again might not be the case, but even if it were I guess we could treat it as a challenge; and challenges are meant to be overcome.

Also remember that these questions being discussed here belong to the toughest group. That's why we're bringing them up here to seek further explanations. It's almost impossible to get most of these right.

Charlie

 

[RT]

Pulley question:

Force pulling a mass over a pulley from height, say 1m, to 2m. Which work is greater?
a) lowering from 2m to 1m
b) pulling from 1m to 2m
c) both of the above are equal
d) ..? not enough data? &lt;= is this one of the choices?

It might be simple, but it got me confused. I put b) pulling from 1m to 2m as it's positive work against gravitational work. However, is there any work by lowering it, might be negative work in this case. Or are both cases equal? Hmm...

 

[Street Philosopher]

Back to the CrO3 question. Wasn't the solvent dichloromethane? If that's the case then alcohols won't completely go to COOH, but stay as aldehyde.

 

[BigRedStress]

okay here are a few.....

THere was this one question in PS that really annoyed me. it said a gun shot a bullet with a mass of m and hit a pendulum block. the combined mass of the bullet and the block was M and it was raised to height h. what is the initial velocity of the bullet? the choices were ..i think...
mgh
2mg
(M/m)(2gh)^.5
(2gh)^.5

okay so i was like .5mv^2 = Mgh
so... v = (2mgh/M)^.5... no?
anywho, i put (2gh)^.5

also, another question was that water had a certain concentration of H3O+. when some NH4Cl is added, what happens to the H30+ conc? I put it remains the same.

in the bio section, there was a question about control exp. for the surgery for the removal o the adrenal glands or soemthing and al lthe shoices were of "sham surgery" i dunno.

finally, in the verbal section there was a passage on yeoman farmers and based on the author these farmers were... i put sentimental and patriotic

 

[RT]

•••quote:•••THere was this one question in PS that really annoyed me. it said a gun shot a bullet with a mass of m and hit a pendulum block. the combined mass of the bullet and the block was M and it was raised to height h. what is the initial velocity of the bullet? the choices were ..i think...
mgh
2mg
(M/m)(2gh)^.5
(2gh)^.5

okay so i was like .5mv^2 = Mgh
so... v = (2mgh/M)^.5... no?
anywho, i put (2gh)^.5
••••I don't remember this question, but here's what I think:
.5 mv^2 = Mgh
v^2 = 2Mgh/m
v = (2Mgh/m)^.5

•••quote:•••
also, another question was that water had a certain concentration of H3O+. when some NH4Cl is added, what happens to the H30+ conc? I put it remains the same.••••NH4Cl =&gt; NH4+ Cl- =&gt; NH4+ is acidic, Cl- is neutral =&gt; H3O+ will increase

or you can say that:
NH4+ is conjugate acid of a weak base =&gt; strong acid
Cl- is conjugate base of a strong acid =&gt; neutral/weak base

•••quote:•••in the bio section, there was a question about control exp. for the surgery for the removal o the adrenal glands or soemthing and al lthe shoices were of "sham surgery" i dunno.••••The question was: which of the following could serve as a control?

I put a) I only as the answer, with I) being "sham surgery of adrenal gland." Other choices were sham surgery of pituitary, etc. I didn't think they were reasonable 'cause surgery of other glands doesn't validate the test/experiment on adrenal gland.

•••quote:•••
finally, in the verbal section there was a passage on yeoman farmers and based on the author these farmers were... i put sentimental and patriotic</font>•••Aiyah, I don't remember anything in Verbal. I recall the question however. Frankly, they seemed all greek to me. Heheh. Keeping my fingers crossed especially for this section.

 

[PlayaHata]

•••quote:•••Originally posted by Street Philosopher:
•Back to the CrO3 question. Wasn't the solvent dichloromethane? If that's the case then alcohols won't completely go to COOH, but stay as aldehyde.•••••I think your right about the solvent! Does anyone else remember the solvent. Street Philosopher are you sure that the solvent will make it stay at the aldehyde stage?

 

[PlayaHata]

•••quote:•••Originally posted by I am Tiger Woods:
•I initially had b but with 5 seconds left, switched it to a. I guess my reasoning was O3 is a product in reaction a, so wouldn't that contradict the claim that it helps breakdown ozone? Plus, the BrCl just looked odd to me. I dunno. Oh well, the more I think about this exam, the worse I'm feeling, so I think I'll stay away from this thread. •••••I'm with you with the same reasoning! It's a product! Right?

 

[PlayaHata]

•••quote:•••Originally posted by Blitzkrieg:
• •••quote:•••Originally posted by Charlie:
•Dear all,

Here's another question to ponder about. Isn't it great that we all have form BG?

Passage: Radical reactions
(R1) Br* + O3 --&gt;?BrO* + O2
(R2)?BrO* + ... --&gt;?Br* + ....

Q: Which of the following, if occurs readily, will contradict the claim that Br* destroys O3:
a) BrO* + O2 --&gt;?Br* + O3
b) BrO* + ClO* --&gt;?BrCl + O2
c)d) ...

A: At first I thought it's a) because it's the reverse of reaction R1, but then I thought it still doesn't terminate the radical reaction chain. I then chose b) BrO* + ClO* --&gt; BrCl + O2 'cause although I think BrCl is unlikely, the reaction does put an end to Br* production.•••••a..why? because if reaction C occurs, then O3 is still broken down, forming O2 and BrCl. In reaction a, the reaction was started by Br, breaking O3, but ends with O3 and Br. Therefore, there is an equliibrium, and no true "destruction" of O3. Does that sound right?•••••sounds good to me! You hit this exam hard I agree with all your answers!

 

[Blitzkrieg]

•••quote:•••Originally posted by Roger Rabbit:
• •••quote:•••Originally posted by Blitzkrieg:
• •••quote:•••Originally posted by Charlie:
•Dear all,

Here's another question to ponder about. Isn't it great that we all have form BG?

Passage: Radical reactions
(R1) Br* + O3 --&gt;?BrO* + O2
(R2)?BrO* + ... --&gt;?Br* + ....

Q: Which of the following, if occurs readily, will contradict the claim that Br* destroys O3:
a) BrO* + O2 --&gt;?Br* + O3
b) BrO* + ClO* --&gt;?BrCl + O2
c)d) ...

A: At first I thought it's a) because it's the reverse of reaction R1, but then I thought it still doesn't terminate the radical reaction chain. I then chose b) BrO* + ClO* --&gt; BrCl + O2 'cause although I think BrCl is unlikely, the reaction does put an end to Br* production.•••••a..why? because if reaction C occurs, then O3 is still broken down, forming O2 and BrCl. In reaction a, the reaction was started by Br, breaking O3, but ends with O3 and Br. Therefore, there is an equliibrium, and no true "destruction" of O3. Does that sound right?•••••sounds good to me! You hit this exam hard I agree with all your answers!•••••bro,

either we did well, or we got wasted =D

 

[Blitzkrieg]

•••quote:•••Originally posted by Roger Rabbit:
• •••quote:•••Originally posted by Street Philosopher:
•Back to the CrO3 question. Wasn't the solvent dichloromethane? If that's the case then alcohols won't completely go to COOH, but stay as aldehyde.•••••I think your right about the solvent! Does anyone else remember the solvent. Street Philosopher are you sure that the solvent will make it stay at the aldehyde stage?•••••It still goes to COOH I believe.......We GOTTA check this one out. Someone go ask an orgo prof!

 

[LittleMD]

hey guys,

for street philos. and roger rabbit... i don't know if they specified a solvent because they were using a separation technique with multiple steps to separate a mixture with many compounds via their solubility/reactivity.

for charlie... Pulley question,
Force pulling a mass over a pulley from height, say 1m, to 2m. Which work is greater?
a) lowering from 2m to 1m
b) pulling from 1m to 2m
c) both of the above are equal
d) ..? not enough data?

I put (c) because i thought that both are applying the same amt. of force with the same displacement, but now that I think of it... I think (a) would have a negative work, and (b) would have a positive work, both of the same magnitude,... so maybe (b) is the right answer. Damn, once again i think i picked the wrong one.

 

[Blitzkrieg]

•••quote:•••Originally posted by LittleMD:
•hey guys,

for street philos. and roger rabbit... i don't know if they specified a solvent because they were using a separation technique with multiple steps to separate a mixture with many compounds via their solubility/reactivity.

for charlie... Pulley question,
Force pulling a mass over a pulley from height, say 1m, to 2m. Which work is greater?
a) lowering from 2m to 1m
b) pulling from 1m to 2m
c) both of the above are equal
d) ..? not enough data?

I put (c) because i thought that both are applying the same amt. of force with the same displacement, but now that I think of it... I think (a) would have a negative work, and (b) would have a positive work, both of the same magnitude,... so maybe (b) is the right answer. Damn, once again i think i picked the wrong one.
•••••well,

W= F X D X cos theta, right?

Distance is the same...the angles are obviously the same...is the force the same? well, in order to lower, you have to apply the same force in magnitude as the gravity working on it...When lifting, the case is the same.

Weight=mg is working against you in *both* cases.

So,I would say that the work is the same. Am I crazy, or does that sound right? I didnt have the question, btw

 

[LittleMD]

•••quote:•••well,

W= F X D X cos theta, right?

Distance is the same...the angles are obviously the same...is the force the same? well, in order to lower, you have to apply the same force in magnitude as the gravity working on it...When lifting, the case is the same.

Weight=mg is working against you in *both* cases.

So,I would say that the work is the same. Am I crazy, or does that sound right? I didnt have the question, btw
••••I think in case (a) where the mass is being lowered, you are applying a force in the opposite direction of displacement, whereas in (b) you are applying a force in the same direction of displacement. i'm still not to sure tho.

Blitzkrieg, what form did you have?

 

[Blitzkrieg]

•••quote:•••Originally posted by LittleMD:
• •••quote:•••well,

W= F X D X cos theta, right?

Distance is the same...the angles are obviously the same...is the force the same? well, in order to lower, you have to apply the same force in magnitude as the gravity working on it...When lifting, the case is the same.

Weight=mg is working against you in *both* cases.

So,I would say that the work is the same. Am I crazy, or does that sound right? I didnt have the question, btw
••••I think in case (a) where the mass is being lowered, you are applying a force in the opposite direction of displacement, whereas in (b) you are applying a force in the same direction of displacement. i'm still not to sure tho.

Blitzkrieg, what form did you have?•••••ooooooh ya..I think you are right about that one.

BP..didnt have that pulley prob.

 

[Mish550]

I said stay the same....since Distance is the same it will stay the same. also, w=change in PE, which would also stay the same, just different signs.

For the h30 question, i said it would decrease....but i guess i was wrong!! what did you all put??

for orgo, did you guys use constitutional isomers twice on the test for an answer, or once??

also, i would like to say, we should not worry if we got a bunch of these onees wrong....these were the hardest questions on the test--that's why we remember them! also, remember on AAMC VI you could miss 23 questions and still get a 10!

 

[Blitzkrieg]

about the cryptosporidium...

It's in Kingdom Protista...so it can't be a cell wall (+) bacteria, virus, or single celled animal..correct? Another website said it was a single celled ANIMAL, but Protista doesnt equal Animal. What did y'all put?

 

[RT]

•••quote:•••Originally posted by Blitzkrieg:
•about the cryptosporidium...

It's in Kingdom Protista...so it can't be a cell wall (+) bacteria, virus, or single celled animal..correct? Another website said it was a single celled ANIMAL, but Protista doesnt equal Animal. What did y'all put?•••••I got that one wrong, it's single-celled protozoan. We had a post earlier about this with links to web sites confirming that it's single-celled protozoan.

 

[Mish550]

what did all of you put for how much more mrna transcript someone with down syndrome would have compared to a normal person? the choices were: the same, 1.5 times, 3 times, and half.

 

[PlayaHata]

I put 1.5 X

 

[PlayaHata]

Mish I don't think the question asked if it was compared to a "normal" person... it was compared to a person with the disease. Am I right?

 

[Angeliqua]

1.5 times, since they have one extra chromosome, this would mean that they have three copies of the gene as opposed to 2 3/2=1.5. I think that would be correct...

 

[Blitzkrieg]

•••quote:•••Originally posted by Mish550:
•what did all of you put for how much more mrna transcript someone with down syndrome would have compared to a normal person? the choices were: the same, 1.5 times, 3 times, and half.•••••put 1.5..

XX normal
XXX downs..

1.5..

 

[Mish550]

That was such an easy question and I got it wrong!! I'm getting kinda worried now...

 

[Tweetie_bird]

•••quote:•••Originally posted by LittleMD:
•hey guys,

for street philos. and roger rabbit... i don't know if they specified a solvent because they were using a separation technique with multiple steps to separate a mixture with many compounds via their solubility/reactivity.

for charlie... Pulley question,
Force pulling a mass over a pulley from height, say 1m, to 2m. Which work is greater?
a) lowering from 2m to 1m
b) pulling from 1m to 2m
c) both of the above are equal
d) ..? not enough data?

I put (c) because i thought that both are applying the same amt. of force with the same displacement, but now that I think of it... I think (a) would have a negative work, and (b) would have a positive work, both of the same magnitude,... so maybe (b) is the right answer. Damn, once again i think i picked the wrong one.
•••••I thought work was one of those functions that was path dependant. Therefore, positive work is greater than negative work. Plus, think about the gravitational force as an added component when you are pulling. If you are pulling AGAINST gravity, there is more work being done than vice versa. Right? I hope so....

 

[Tweetie_bird]

•••quote:•••Originally posted by Mish550:
•That was such an easy question and I got it wrong!! I'm getting kinda worried now...•••••Hey Mish, I know it's easy for me to say this now...but I was feeling the same way yesterday. Don't let it get to you. It ain't over till the fat AAMC has sung.... Plus, not to make light of the situation, but what's the worse that can happen? We may have to take the MCAT again. It's just a silly test...take it as one. Our dreams and goals will still be achieved. Just through a different path than once imagined. It will be alright in the long run.
Take care,
Tweetie

 

[Mish550]

what are the units of little f in the equation v=Eq/f??

 

[Blitzkrieg]

•••quote:•••Originally posted by Mish550:
•what are the units of little f in the equation v=Eq/f??•••••the only one wiht Couloumbs in it.

v= E (volt per meter) q= Charge= Coulomb, v= Meter/second.

ergo,

f= Eq/v

check it out

 

[Mish550]

Which of the following would be most reactive?

HF, HCl, HBr, and HI?

 

[Papa Smurf]

•••quote:•••Originally posted by Mish550:
•Which of the following would be most reactive?

HF, HCl, HBr, and HI?•••••Reactivity decreases as you go down the periodic table.

 

[Blitzkrieg]

•••quote:•••Originally posted by Mish550:
•Which of the following would be most reactive?

HF, HCl, HBr, and HI?•••••HF is most reactive, isn't it?

 

[Mish550]

•••quote:•••Originally posted by Off The Heezy, Fo' Sheezy:
• •••quote:•••Originally posted by Mish550:
•Which of the following would be most reactive?

HF, HCl, HBr, and HI?•••••Reactivity decreases as you go down the periodic table.•••••Right, F is more reactive than anything else when it is by itself, but when it is bound to something, would it be less reactive b/c of the large electronegativity difference? That's why HF is such a weak acid. wouldn't this make HI the most reactive?

 

[Papa Smurf]

•••quote:•••Originally posted by Mish550:
• •••quote:•••Originally posted by Off The Heezy, Fo' Sheezy:
• •••quote:•••Originally posted by Mish550:
•Which of the following would be most reactive?

HF, HCl, HBr, and HI?•••••Reactivity decreases as you go down the periodic table.•••••Right, F is more reactive than anything else when it is by itself, but when it is bound to something, would it be less reactive b/c of the large electronegativity difference? That's why HF is such a weak acid. wouldn't this make HI the most reactive?•••••Um, wasn't the question asking about the reactivity of the hydrogen halides towards alkenes? If that's the case, HF is most reactive, followed by HCL. HBR is more selective, (only reacting with tertiary carbons), and HI is unreactive. Anyone remember?

 

[Angeliqua]

I think they were asking about the reactivity of the hydrogen halides, which would make HF the correct answer.

 

[Tweetie_bird]

umm...this was a question in the radical passage, wasn't it? Yes, HF is most reactive, but I don't think this is what the question was asking....I wish I could remember what it asked, b/c I believed I picked HI as the answer.

 

[Alli Cat]

Yeah, what exactly DID it say? I know I put HI thinking "That's definitely right."

And by the way, why on earth would anyone pick HBr or HCl? As if reactivity trends favored the middle of the column. Even if you forget which way the trend goes, you know that the top of the column is one extremity and the bottom is the other. Ditto for ion size across a row... I always think it's funny when the MCAT has to 'pad' the answer choices with some obviously wrong ones... but then, eliminating 2 of the choices always makes me feel better about guessing...

 

[Medical123]

Well, chalk up another vote for HI. I used the same rationale that Mish used a few posts back. I thought that it was just a free standing question, but this point so many of the questions and passages have run together that I don't even know what I am talking about.

I tried to look it up and if the question was talking about the halogen halides, HF is definitely the right answer, which is not good for me! <img border="0" title="" alt="[Frown]" src="frown.gif" />

 

[Blitzkrieg]

I dont even remember the question...What passage was it associated with? I had form BP..

 

[RT]

Reactivity?: HF, HCl, HBr, HI

I think the question asked for ozone depletion potential. H-I bond (~159 J) is easier to break than H-Cl bond (~587 J); however, fluoride is much more destructive than iodide due to its reactivity by itself. I don't remember what exactly the question was asking for: reactivity by itself, or reactivity as a whole (combination of both processes). Jeezz, I don't remember what I put anymore.

 

[RT]

3 chromosomes and # of mRNA transcripts

1.5x ? Doh!!! I thought of 1.5, but put 1.0 'cause I thought the # of transcript depends on individual need. Although the person has 1.5x the # of chromosomes, he still only needs 1x # of transcript. Anyone thinks this is reasonable?

What! another wrong? The fact that so many people put 1.5 made me think twice.

Ok! this is no good.

 

[Mish550]

I remember I said HI too. I don't remember what context the question was asked in. But i remember reasoning out why HI was the right answer. I was looking at it again when I was done and time got called, but I remember thinking the answer should be HF in the end. The question that I'm talking about was in the bio section i think. I dont remember anything about ozone depletion in my bio section. At this point, all the sections, all the practice tests that i've taken, are all merging together!! I hope HI was the right answer!!

 

[RT]

Nevertheless

It does make me wanna puke when I realize my errors, nevertheless, this is fun: discussing academic problems. ****Grinnnnssssssssss. hrrggghhh.....

This is no good, heheh. Hmmm.....

 

[RT]

•••quote:•••Originally posted by Mish550:
•I remember I said HI too. I don't remember what context the question was asked in. But i remember reasoning out why HI was the right answer. I was looking at it again when I was done and time got called, but I remember thinking the answer should be HF in the end. The question that I'm talking about was in the bio section i think. I dont remember anything about ozone depletion in my bio section. At this point, all the sections, all the practice tests that i've taken, are all merging together!! I hope HI was the right answer!!•••••Lol heheh..jeezzz are we discussing two different things? heheh... Sighs... haiyahh.. I think my synapses are being hyperpolarized rendering my neurons unable to initiate an action potential toward my memory center in the brain cortex.

Heheh

 

[Medical123]

•••quote:•••Originally posted by Charlie:••••Lol heheh..jeezzz are we discussing two different things? heheh... Sighs... haiyahh.. I think my synapses are being hyperpolarized rendering my neurons unable to initiate an action potential toward my memory center in the brain cortex.

Heheh[/QB][/QUOTE]

You know, it makes you wonder. Though a lot of us had similar questions and passages, they were on different forms. There are two or three questions where people have read or interpreted them differently. There is the possibility that there could be some slight variation in the questions asked. Could it be that those evil MCAT writers are trying to torture us even more, by making us stress out over what we did or did not answer? <img border="0" title="" alt="[Eek!]" src="eek.gif" />

 

[Tweetie_bird]

there was another question about terminal velocity and what the graph looks like according to time. I eliminated the "direction relationship" answer, where the slope was positive and v and t were directly related. I also eliminated the one with a straight line (no relationship" with time. I was left with two choices. I marked the graph that looked like this: half a "U" turned on it's side 90 degrees. i.e. as time increases, v increases exponentially, and asymptotes out eventually. Did you guys have the same answer?