1. Phospholipids are major constituents of ________.
a. receptor molecules on cell surfaces
b. membrane lipid bilayers
c. cholesterol
d. the nucleolus
status: not answered ()
correct: b
your answer:
2
Membrane proteins serve which of the following functions?
a. hormonal degradation
b. regulation of membrane fluidity
c. detoxification
d. energy transduction
status: not answered ()
correct: d
your answer:
3
Which molecule regulates membrane fluidity, thereby regulating membrane permeability
and affecting the function of proteins embedded in the membrane?
a. water
b. polar head group on the phospholipid
c. cholesterol
d. glycocalyx
,4
Which of the following is an attribute of membranes?
a. asymmetrical (inner face and outer face different)
b. symmetrical (inner face and outer face the same)
c. consist primarily of structural proteins
d. rigid structures that hold proteins firmly in one spot
5
The carbohydrate moieties of the plasma membrane glycoproteins and glycolipids are:
a. the sugar residues that form the glycocalyx.
b. structural components located between the bilayers of the membranes.
c. oriented inwardly, toward the cytoplasmic matrix.
d. oriented equally inwardly and outwardly to maintain symmetry.
status: not answered ()
correct: a
your answer:
6
Proteins associated with the membrane through ionic interactions and located on or near
the membrane surface are called ________.
a. peripheral proteins
b. rough endoplasmic reticulum
c. integral proteins
d. Golgi apparatus
, 7
In the cell structure the ________ provides support and controls the movement of cell
organelles.
a. endoplasmic reticulum
b. matrix space
c. microtrabecular lattice
d. mitochondrion
8
The microtrabecular lattice facilitates velocity of a synthetic pathway by binding enzymes
of the pathway so that the product of one enzyme is released in close proximity to the
next enzyme for which it is a substrate, including, for example, enzymes of ________.
a. the Krebs cycle
b. beta-oxidation
c. fatty acid synthesis
d. ketone production
9
The mitochondrion is the organelle responsible for:
a. sequestering calcium needed for the contractile apparatus.
b. ridding the cell of toxins.
c. transcribing DNA into mRNA.
d. producing most of the cell's metabolic energy (ATP).
a. receptor molecules on cell surfaces
b. membrane lipid bilayers
c. cholesterol
d. the nucleolus
status: not answered ()
correct: b
your answer:
2
Membrane proteins serve which of the following functions?
a. hormonal degradation
b. regulation of membrane fluidity
c. detoxification
d. energy transduction
status: not answered ()
correct: d
your answer:
3
Which molecule regulates membrane fluidity, thereby regulating membrane permeability
and affecting the function of proteins embedded in the membrane?
a. water
b. polar head group on the phospholipid
c. cholesterol
d. glycocalyx
,4
Which of the following is an attribute of membranes?
a. asymmetrical (inner face and outer face different)
b. symmetrical (inner face and outer face the same)
c. consist primarily of structural proteins
d. rigid structures that hold proteins firmly in one spot
5
The carbohydrate moieties of the plasma membrane glycoproteins and glycolipids are:
a. the sugar residues that form the glycocalyx.
b. structural components located between the bilayers of the membranes.
c. oriented inwardly, toward the cytoplasmic matrix.
d. oriented equally inwardly and outwardly to maintain symmetry.
status: not answered ()
correct: a
your answer:
6
Proteins associated with the membrane through ionic interactions and located on or near
the membrane surface are called ________.
a. peripheral proteins
b. rough endoplasmic reticulum
c. integral proteins
d. Golgi apparatus
, 7
In the cell structure the ________ provides support and controls the movement of cell
organelles.
a. endoplasmic reticulum
b. matrix space
c. microtrabecular lattice
d. mitochondrion
8
The microtrabecular lattice facilitates velocity of a synthetic pathway by binding enzymes
of the pathway so that the product of one enzyme is released in close proximity to the
next enzyme for which it is a substrate, including, for example, enzymes of ________.
a. the Krebs cycle
b. beta-oxidation
c. fatty acid synthesis
d. ketone production
9
The mitochondrion is the organelle responsible for:
a. sequestering calcium needed for the contractile apparatus.
b. ridding the cell of toxins.
c. transcribing DNA into mRNA.
d. producing most of the cell's metabolic energy (ATP).
