Bio 1330 Final Review 1 (Simpson) Questions With
Complete Solutions
___ atoms give organic molecules their overall shape; ___ atoms
determine the overall chemical behavior of organic molecules.
Correct Answers Carbon; H, N, and O
A carbon atom is most likely to form what kind of bond(s) with
other atoms? Correct Answers Covalent
A cell with a predominance of free ribosomes is most likely ___.
Correct Answers Primarily producing proteins in the cytosol.
A cell with an extensive area of smooth endoplasmic reticulum
is specialized to ___. Correct Answers Synthesize large
quantities of lipids
A chemical reaction that has a positive ∆G is best describes as
___. Correct Answers Endergonic
A glycosidic linkage is analogous to which of the following in
proteins? Correct Answers A peptide bond
A membrane protein that spans the phospholipid bilayer one or
more times is ___. Correct Answers A transmembrane protein
A noncompetitive inhibitor decreased the rate of an enzyme
reaction by ___. Correct Answers Changing the shape of the
enzyme's active site.
A peptide bond ___. Correct Answers ...
,A phospholipid is a ___. Correct Answers ...
A prokaryotic cell is distinct from a eukaryotic cell because a
prokaryotic cell lacks ___. Correct Answers A nucleus
A solution of starch at room temperature does not readily
decompose to form a solution of simple sugars because___.
Correct Answers The activation energy barrier for this reaction
cannot easily be surmounted at room temperature.
All of the following are part of a prokaryotic cell except ___.
A. Ribosomes
B. Endoplasmic Reticulum
C. Cell Wall
D. Plasma Membrane
E. DNA Correct Answers B. Endoplasmic Reticulum
An enzyme has a total of four active sites. When you denature
the molecule and study its composition, you find that each active
site occurs on a different polypeptide. Which of the following
hypotheses does this observation support? Correct Answers The
protein has quaternary structure.
An enzymes inhibitor is roughly the same shape as the substrate
and binds at the active site is termed a ___ inhibitor. Correct
Answers Competitive
, At which level of protein structure are interactions between the
side chains (R-groups) most important? Correct Answers
Tertiary
Atoms of a specific element always have a constant number of
Correct Answers Protons
Bonds between atoms that are equally electronegative are
Correct Answers Non-polar covalent bonds
Both carbohydrate sand fats are used as fuel in cells, but fats
store twice as much energy per gram as carbohydrates. Which
statement best explains why? Correct Answers Fats have more
C-C and C-H bonds with high potential energy, and fewer C-O
bonds with low potential energy.
Both DNA and RNA Correct Answers ...
Can an enzyme make a non spontaneous reaction occur
spontaneously? Why or why not? Correct Answers No, because
enzymes do not affect the overall ∆G of a reaction.
Carbon dioxide (CO2) is released during which of the following
stages of cellular respiration? Correct Answers Oxidation of
pyruvate to acetyl CoA and the citric acid cycle
Catabolic pathways ___. Correct Answers ...
Catabolism is to anabolism as ___ is to ___. Correct Answers
Exergonic; endergonic
Complete Solutions
___ atoms give organic molecules their overall shape; ___ atoms
determine the overall chemical behavior of organic molecules.
Correct Answers Carbon; H, N, and O
A carbon atom is most likely to form what kind of bond(s) with
other atoms? Correct Answers Covalent
A cell with a predominance of free ribosomes is most likely ___.
Correct Answers Primarily producing proteins in the cytosol.
A cell with an extensive area of smooth endoplasmic reticulum
is specialized to ___. Correct Answers Synthesize large
quantities of lipids
A chemical reaction that has a positive ∆G is best describes as
___. Correct Answers Endergonic
A glycosidic linkage is analogous to which of the following in
proteins? Correct Answers A peptide bond
A membrane protein that spans the phospholipid bilayer one or
more times is ___. Correct Answers A transmembrane protein
A noncompetitive inhibitor decreased the rate of an enzyme
reaction by ___. Correct Answers Changing the shape of the
enzyme's active site.
A peptide bond ___. Correct Answers ...
,A phospholipid is a ___. Correct Answers ...
A prokaryotic cell is distinct from a eukaryotic cell because a
prokaryotic cell lacks ___. Correct Answers A nucleus
A solution of starch at room temperature does not readily
decompose to form a solution of simple sugars because___.
Correct Answers The activation energy barrier for this reaction
cannot easily be surmounted at room temperature.
All of the following are part of a prokaryotic cell except ___.
A. Ribosomes
B. Endoplasmic Reticulum
C. Cell Wall
D. Plasma Membrane
E. DNA Correct Answers B. Endoplasmic Reticulum
An enzyme has a total of four active sites. When you denature
the molecule and study its composition, you find that each active
site occurs on a different polypeptide. Which of the following
hypotheses does this observation support? Correct Answers The
protein has quaternary structure.
An enzymes inhibitor is roughly the same shape as the substrate
and binds at the active site is termed a ___ inhibitor. Correct
Answers Competitive
, At which level of protein structure are interactions between the
side chains (R-groups) most important? Correct Answers
Tertiary
Atoms of a specific element always have a constant number of
Correct Answers Protons
Bonds between atoms that are equally electronegative are
Correct Answers Non-polar covalent bonds
Both carbohydrate sand fats are used as fuel in cells, but fats
store twice as much energy per gram as carbohydrates. Which
statement best explains why? Correct Answers Fats have more
C-C and C-H bonds with high potential energy, and fewer C-O
bonds with low potential energy.
Both DNA and RNA Correct Answers ...
Can an enzyme make a non spontaneous reaction occur
spontaneously? Why or why not? Correct Answers No, because
enzymes do not affect the overall ∆G of a reaction.
Carbon dioxide (CO2) is released during which of the following
stages of cellular respiration? Correct Answers Oxidation of
pyruvate to acetyl CoA and the citric acid cycle
Catabolic pathways ___. Correct Answers ...
Catabolism is to anabolism as ___ is to ___. Correct Answers
Exergonic; endergonic
