Concept explainers
Interpretation:
The stereoisomer of
Concept introduction:
A
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Organic Chemistry: Principles and Mechanisms (Second Edition)
- To which family of mirror-image isomers do nearly all naturally occurring amino acids belong?arrow_forwardWhich of the following are true concerning the chemical bond that forms between the carboxyl (RCOOH) group of one amino acid and the amino (RCNH2) group of another? a.The bond is called a peptide bond. b.It is formed by inserting a water molecule between them. c.It is formed by a dehydration reaction. d.A polypeptide has more of these bonds than a protein.arrow_forward21-101 Glycerophospholipids tend to have both a positive charge and a negative charge in their hydrophilic portions. Does this fact help or hinder lipid packing in membranes? Explain.arrow_forward
- Pick the FALSE statement: Since amino acids have functional groups that are strong acids, their structures depend on the pH of their environment. Cys has a sulfhydryl that can stabilize protein shape by forming noncovalent bonds. The R group in Ala is a methyl group. Aspartic acid and glutamic acid do not have amide groups. more than 1 of the above is falsearrow_forwardUse the following pentapeptide (5 amino acids linked together) structure and draw it again with the following amino acid sequence: glutamine, glycine, serine, alanine threonine. (Hint: You will have to look up the atoms that make up the R groups of the amino acids to replace the generic "R" in the structural formula provided). HH OHH OHH OHH OH HO | | || | | || | |||| | || | | || H-N-C-C-N-C-C-N-C-C-N-C-C-N-C-C-OH R R R R I Rarrow_forwardYou are trying to identify an unknown amine from a list of potential candidates. You have the following information about this amine: • A yellow liquid with an ammonia-like odour Highly soluble in water • Very poorly soluble in hexane • Basic and reacts in a 3 to 1 molar ratio with hydrochloric acid (HCI) Which is the most likely amine? O Aminoethane NH2 1-Aminohexane NH2 O 1,2-Diaminoethane H2N NH2arrow_forward
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