Carbon atoms are the most versatile building blocks of the molecules used by living organisms because _____. 8
each carbon atom acts as an intersection point from which a molecule can branch off in up to four directions
Which of the following examples describes a unique functional property of the carboxyl group? 23
The covalent bond between oxygen and hydrogen is so polar that hydrogen ions tend to dissociate reversibly.
The ionized or dissociated carboxyl group may be written as _____. 26
A thiol is another name for the ___________.
In a hydrolysis reaction, _____, and in this process water is _____.
a polymer is broken up into its constituent monomers; consumed
The type of bond that forms to join monomers (such as sugars and amino acids) into polymers (such as starch and proteins) is a(n) _____ bond
Amylase is an enzyme that breaks down starch. Why can't the same enzyme break down cellulose?
The monosaccharide monomers in cellulose are bonded together differently than in starch.
The lipids that form the main structural component of cell membranes are _____.
The peptide bond is _____.
covalent bond joining amino acids together to form a polypeptide.