A snapshot of the summary - Biology: A Global Approach, Global Edition
5 biological macromolecules and lipids
large biological molecules are usually assembled by polymerization of a few kinds of small subunits. Wich of the following is an exception to this statement?
D an enzyme
E a contractile proteinsteroid
a molecule with the formula C18H36O2 is probably a?
B fatty acid
D nucleic acid
E hydrocarbonfatty acid
wich level of protein structure do the alpha helix and the B pleated sheet represent?
E primary, secondary, tertiary, and quaternarysecondary
the molecular formula for glucose is C6H12O6. What would be the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions?
there are 20 different amino acids. what makes one amino acid different from another?
A different side chains (R groups) attached to a carboxyl carbon
B different side chains (R groups) attached to the amino groups
C different side chains (R groups) attached to an alpha carbon
D different structural and optical isomers
E different asymmetric carbonsdifferents side chains (R groups) attached to an alpha carbon
a double-stranded DNA molecule contains a total of 120 purines and 120 pyrimidines. this DNA molecule could be composed of?
120 adenine and 120 uracil molecules
120 thymine and 120 adenine molecules
120 cytosine and 120 thymine molecules
120 adenine and 120 cytosine molecules
120 guanine and 120 thymine molecules120 thymine and 120 adenine molecules
wich of the following statements about the 5' end of a polynucleotide strand of DNA is Correct?
the 5' end has a hydroxyl group attached to the number 5 carbon of ribose.
the 5'end has a phosphate group attached to the number 5 carbon of ribose.
the 5'end has a phosphate attached to the number 5 carbon of nitrogenous base.
the 5' end has a carboxyl group attached to the number 5 carbon of ribose.
the 5' end is the fifth position on one of the nitrogenous bases.the 5'end has a phosphate group attached to the number 5 carbon of ribose.
wich of these classes of biological molecules consist of both small molecules and macromolecular polymers?
D nucleic acids
E lipids, carbohydrates, proteins, and nucleic acids all consist of only macromolecular polymers.carbohydrates
which of the following is true of both starch and cellulose?
A they are both polymers of glucose
B they are cis-trans isomers of each other.
C they can both be digested by humans
D they are both used for energy storage in plants.
E they are both structural components of the plant cell wallthey are both polymers of glucose
6 energy and life
what is a metabolic pathway?begins with a specific molecule, which is then altered in a series of defined steps, resulting in a certain producht.
-each step is catalyzed by a specific enzyme
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