BIO 201 UNCW Chapter 5 Brooker Questions With
Complete Solutions
____ ____ is an example of noncompetitive inhibition, which is
involved in biochemical regulation of metabolic pathways.
Correct Answers Feedback inhibition
____ ____ transport involves a pump that uses energy to
transport solutes against a gradient. Correct Answers primary
active
____ is the addition of electrnos to an atom or molecule, and
___ is the removal of electrons from an atom or molecule.
Correct Answers reductin
oxidation
______ may span the membrane and may be bound on the
surface to other proteins or to lipids. Correct Answers proteins
_______ membranes separate a cell from its surroundings, and
________ membranes provide interfaces to carry out vital
cellular activities. Correct Answers Plasma
organellar
_______ proteins and _______ proteins are classified as integral
membrane proteins Correct Answers Transmembrane
lipid-anchored
________ determines function Correct Answers structure
,________ move some phospholipids to the other leaflet. Correct
Answers Flippases
______________ regulate the traffic of substances into and out
of the cell and its organelles. Correct Answers biomembranes
A cell of nudibranch contains less sodium than the surrounding
environment. What type of transport is required to import
sodium ions into the cell?
Facilitated diffusion
simple diffusion
passive transport
active transport Correct Answers facilitated diffusion
passive transport
A cell placed in a hypertonic envronment will likely crenate, as
water moves from the _____ of the cell to the _____ . Correct
Answers inside, outside
A fundamental property of living cells is their ability to maintain
a relatively constant internal environment. This is known as:
Correct Answers homeostasis
A saturated fatty acyl tail:
has no kink in it, allowing the fatty acyl tails to be close to each
other
has a kink in it, creating a space between fatty acyl tails Correct
Answers no kink
, A solution in which the solute concentration on both sides of the
membrane is equal is classified as:
hypertonic
isotonic
hypotonic Correct Answers isotonic
A specialized form of TEM, ____________ , can be used to
analyze the interiors of phospholipid bilayers. Correct Answers
freeze fracture electron microscopy (FFEM)
A transmembrane segment is stable in a membrane because the
_______ can interact favorably with the ________ fatty acyl
tails of the lipid molecules. Correct Answers nonpolar amino
acids
hydrophobic
A(n) ____ is a multi-protein complex involved in RNA
degradation Correct Answers exosome
Active transport Correct Answers ions are moved against their
gradients via a transport protein and an energy source
Active transport is the movement of a solute across the
membrane ___ its gradient Correct Answers against
Addition of ___ to a protein caused it to be directed to the
proteasome for degradation.
ubiquitin
ATP
Complete Solutions
____ ____ is an example of noncompetitive inhibition, which is
involved in biochemical regulation of metabolic pathways.
Correct Answers Feedback inhibition
____ ____ transport involves a pump that uses energy to
transport solutes against a gradient. Correct Answers primary
active
____ is the addition of electrnos to an atom or molecule, and
___ is the removal of electrons from an atom or molecule.
Correct Answers reductin
oxidation
______ may span the membrane and may be bound on the
surface to other proteins or to lipids. Correct Answers proteins
_______ membranes separate a cell from its surroundings, and
________ membranes provide interfaces to carry out vital
cellular activities. Correct Answers Plasma
organellar
_______ proteins and _______ proteins are classified as integral
membrane proteins Correct Answers Transmembrane
lipid-anchored
________ determines function Correct Answers structure
,________ move some phospholipids to the other leaflet. Correct
Answers Flippases
______________ regulate the traffic of substances into and out
of the cell and its organelles. Correct Answers biomembranes
A cell of nudibranch contains less sodium than the surrounding
environment. What type of transport is required to import
sodium ions into the cell?
Facilitated diffusion
simple diffusion
passive transport
active transport Correct Answers facilitated diffusion
passive transport
A cell placed in a hypertonic envronment will likely crenate, as
water moves from the _____ of the cell to the _____ . Correct
Answers inside, outside
A fundamental property of living cells is their ability to maintain
a relatively constant internal environment. This is known as:
Correct Answers homeostasis
A saturated fatty acyl tail:
has no kink in it, allowing the fatty acyl tails to be close to each
other
has a kink in it, creating a space between fatty acyl tails Correct
Answers no kink
, A solution in which the solute concentration on both sides of the
membrane is equal is classified as:
hypertonic
isotonic
hypotonic Correct Answers isotonic
A specialized form of TEM, ____________ , can be used to
analyze the interiors of phospholipid bilayers. Correct Answers
freeze fracture electron microscopy (FFEM)
A transmembrane segment is stable in a membrane because the
_______ can interact favorably with the ________ fatty acyl
tails of the lipid molecules. Correct Answers nonpolar amino
acids
hydrophobic
A(n) ____ is a multi-protein complex involved in RNA
degradation Correct Answers exosome
Active transport Correct Answers ions are moved against their
gradients via a transport protein and an energy source
Active transport is the movement of a solute across the
membrane ___ its gradient Correct Answers against
Addition of ___ to a protein caused it to be directed to the
proteasome for degradation.
ubiquitin
ATP
