Concept explainers
a.
To distinguish:
Between
Introduction:
Nonpolar molecules are hydrophobic because they usually lack the ability (intermolecular forces) to interact with water molecules. They usually lack the ability to form hydrogen bonds, ionic bonds, or have any sort of dipole interaction with water. Since they cannot interact with water molecules on a molecular level, they tend to stay by other nonpolar molecules (molecules which they can interact with, hence oil and water do not mix very well or at all).
b.
To distinguish:
Between ionic interactions and polar interactions.
Introduction:
Nonpolar molecules are hydrophobic because they usually lack the ability (intermolecular forces) to interact with water molecules. They usually lack the ability to form hydrogen bonds, ionic bonds, or have any sort of dipole interaction with water. Since they cannot interact with water molecules on a molecular level, they tend to stay by other nonpolar molecules (molecules which they can interact with, hence oil and water do not mix very well or at all).
c.
To distinguish:
Between polar and nonpolar amino acids.
Introduction:
Nonpolar molecules are hydrophobic because they usually lack the ability (intermolecular forces) to interact with water molecules. They usually lack the ability to form hydrogen bonds, ionic bonds, or have any sort of dipole interaction with water. Since they cannot interact with water molecules on a molecular level, they tend to stay by other nonpolar molecules (molecules which they can interact with, hence oil and water do not mix very well or at all).
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General, Organic, and Biological Chemistry (3rd Edition)
- (a) How many tripeptides can be made from glycine, alanine, and leucine, using each amino acid only once per tripeptide? (b) Write the structural formulas of these tripeptides and name them in the shorthand abbreviation used for showing amino acid sequences.arrow_forward. How many possible primary structures exist for a small polypeptide containing four individual amino acids?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_forward
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