Podcast
Questions and Answers
What is a requirement for a molecule to be chiral?
What is a requirement for a molecule to be chiral?
- It has a carbon atom.
- It has a carbon with four different groups. (correct)
- It has a nitrogen atom.
- It has four or more atoms.
Why can introducing the wrong-handed isomer of a chiral molecule have effects?
Why can introducing the wrong-handed isomer of a chiral molecule have effects?
- Because our bodies can use both isomers.
- Because our bodies can only use one of the isomers. (correct)
- Because the wrong-handed isomer is always harmless.
- Because the wrong-handed isomer is always toxic.
What is unique about how chiral molecules interact with plane-polarized light?
What is unique about how chiral molecules interact with plane-polarized light?
- They don't interact with it at all.
- They reflect it completely.
- They interact with it differently. (correct)
- They absorb it completely.
Which of the following belongs to the right-handed family?
Which of the following belongs to the right-handed family?
What is the difference between the two isomers of carvone?
What is the difference between the two isomers of carvone?
What was the consequence of prescribing the wrong-handed isomer of thalidomide?
What was the consequence of prescribing the wrong-handed isomer of thalidomide?
What is the main factor that determines the identity of an amino acid?
What is the main factor that determines the identity of an amino acid?
Which type of side chains are the most polar due to their ionized form at physiological pH?
Which type of side chains are the most polar due to their ionized form at physiological pH?
Why are hydrogen bonds possible in certain amino acid side chains?
Why are hydrogen bonds possible in certain amino acid side chains?
What is the reason why biochemists prefer to use one-letter abbreviations for amino acids?
What is the reason why biochemists prefer to use one-letter abbreviations for amino acids?
How are amino acids typically grouped according to their side chains?
How are amino acids typically grouped according to their side chains?
What is the location of the amine functional group in alpha amino acids?
What is the location of the amine functional group in alpha amino acids?
What is the characteristic of naturally occurring amino acids?
What is the characteristic of naturally occurring amino acids?
Why can we digest D-sugars but not L-sugars?
Why can we digest D-sugars but not L-sugars?
What is the result of the intramolecular acid-base reaction in amino acids?
What is the result of the intramolecular acid-base reaction in amino acids?
What is the definition of a zwitterion?
What is the definition of a zwitterion?
What is the function of the acidic functional group in amino acids?
What is the function of the acidic functional group in amino acids?
What is the characteristic of amino acids (except glycine)?
What is the characteristic of amino acids (except glycine)?
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