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Altius half length exam
Lydia_5054
#1 Posted : Tuesday, June 22, 2021 1:12:46 AM
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Q3: By strict control of stereochemistry, do they mean like if it was in R confirmation than it stays as R? Because going from dopamine to noradrenaline, it did not even have a stereocenter before so im not understanding how there can be strict control of it.

Q8: why isn't the 2H and H+ shown in the original equation in the passage? Because they are present after we have crossed out everything else so is that still okay even though its not shown in the original question?

Q10: if BHB is a ketone body, which increases blood acidity, then im not understanding why upregulating so making more of it will increase ph instead

q16: im confused with why the answer is not A. under basic conditions, i know that bases are negatively charged. But don't we also say that bases get protonated? So why has it lost a H? is it like under basic conditions the amino acids act like acids and under acidic conditions amino acids act like bases?

Q12: im having a hard time understanding when compounds should be protonated/deprotonated. For instance, how did we know that the carboxylic acid would be deprotonated and the amine group protonated under acidic conditions but what about under basic conditions?
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INSTR_Katrina_128
#2 Posted : Tuesday, June 22, 2021 4:37:56 PM
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Hi Lydia,

I'm sorry that we haven't answered your questions yet. I've looked through the entirety of all the Altius Test #1 exams (half-length and full-length) and cannot find the questions that you're referring to.

From the account that I have, the HLE #1 is only CARS questions, and I cannot find any references to any keywords that you're providing in any of the full length tests questions in the chemistry or biochemistry sections.

Is it possible that these are from a different test set? Not Altius?

Thank you for your patience.
Lydia_5054
#3 Posted : Tuesday, June 22, 2021 5:01:21 PM
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Hi Katrina,

Im not sure if this makes a difference but i am using the altius full length exams from last year because it did not expire yet for me. Would they be different than this years?
INSTR_Katrina_128
#4 Posted : Tuesday, June 22, 2021 6:12:51 PM
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Ahhh I wonder if that's it!!

Would you be able to DM me screenshots of the questions?
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