MCB 410 Quiz 1 UPDATED ACTUAL Questions and CORRECT
Answers
Prokaryotic cells do not possess -a nucleus
-RNA
-replication machinery
-ribosomes
-membrane bilayers
-a nucleus
Which statement is NOT true about the event's -Scientists concluded that new cells can form spontaneously from the remnants
conclusions from studies during the mid-1800s of ruptured cells
surrounding the discovery of cells?
-Scientists concluded that new cels arise from he growth
and division of previously existing cells.
-Cells came to be known as the smallest universal
building block of living organisms.
-Scientists concluded that new cells can form
spontaneously from the remnants of ruptured cells
-Light microscopy was essential in demonstrating the
commonalities between plant and animal tissues.
Which pair of values best fills in the blanks in this -10, 1000
statement: On average, eukaryotic cells are times
longer and have ___ times more volume than prokaryotic
cells.
-10, 1000
-100, 300
-10, 200
-2, 10
In the western blotting technique: -gel-separated proteins that have been transferred to a membrane are probed
-proteins are separated by gel electrophoresis and with a specific antibody
stained with a dye
-gel-separated proteins that have been transferred to a
membrane are probed with a specific antibody
-proteins are separated by gel electrophoresis; primary
antibodies recognize the largest protein and secondary
antibodies recognize the smallest protein.
-secondary antibodies catalyze the transfer of a
fluorescent molecule to the target protein.
, Which of the following statements regarding microscopic -traditional light microscopes can be used to view individual protein molecules
observation of cells is FALSE? within cells
-electron microscopes have greater resolution than light
microscopes
-traditional light microscopes can be used to view
individual protein molecules within cells
-the limit of resolution of traditional light microscopes is
approximately 200nm
-ribosomes can be viewed using an electron microscope
The variation in the physical characteristics between -sequence, three-dimensional shape
different proteins are influences by the different overall
amino acid compositions, but an even more important
characteristic is the unique amino acid which
determines the ___ of the protein.
-number, cellular location
-peptide bond, resistance to denaturation
-sequence, three-dimensional shape
-number, molecular weight
Biologists cannot possibly study all living species. -all of the above
Instead, they try to understand cell behavior by studying
a select subset of species called "model organisms."
Which of the following characteristics are useful in an
organism chosen for use as a model in laboratory
studies?
-amenability to genetic manipulation
-ability to grow under controlled conditions
-rapid rate of reproduction
-all of the above
Which of the following statements is TRUE? -Phosphorylation of serine residues can alter protein function.
-Gel electrophoresis separates proteins based on the
number of alpha-helices and beta-sheets they contain.
-Phosphorylation of serine residues can alter protein
function.
-The amino acids in the interior of a protein do not
interact with the ligand and therefore play no role in
selective binding of the protein to the ligand.
-Antibodies are Y-shaped and are composed of a single
polypeptide chain.
Referring to Figure 1-8 and the accompanying text in -can be used to visualize large ribonucleoprotein complexes, such as ribosomes.
Essential Cell Biology 5th ed, electron microscopy:
-is used to observe living cells.
-has lower resolution than light microscopy.
-can be used to visualize large ribonucleoprotein
complexes, such as ribosomes.
-is not capable of distinguishing between mitochondria
and other organelles, such as lysosomes.
Answers
Prokaryotic cells do not possess -a nucleus
-RNA
-replication machinery
-ribosomes
-membrane bilayers
-a nucleus
Which statement is NOT true about the event's -Scientists concluded that new cells can form spontaneously from the remnants
conclusions from studies during the mid-1800s of ruptured cells
surrounding the discovery of cells?
-Scientists concluded that new cels arise from he growth
and division of previously existing cells.
-Cells came to be known as the smallest universal
building block of living organisms.
-Scientists concluded that new cells can form
spontaneously from the remnants of ruptured cells
-Light microscopy was essential in demonstrating the
commonalities between plant and animal tissues.
Which pair of values best fills in the blanks in this -10, 1000
statement: On average, eukaryotic cells are times
longer and have ___ times more volume than prokaryotic
cells.
-10, 1000
-100, 300
-10, 200
-2, 10
In the western blotting technique: -gel-separated proteins that have been transferred to a membrane are probed
-proteins are separated by gel electrophoresis and with a specific antibody
stained with a dye
-gel-separated proteins that have been transferred to a
membrane are probed with a specific antibody
-proteins are separated by gel electrophoresis; primary
antibodies recognize the largest protein and secondary
antibodies recognize the smallest protein.
-secondary antibodies catalyze the transfer of a
fluorescent molecule to the target protein.
, Which of the following statements regarding microscopic -traditional light microscopes can be used to view individual protein molecules
observation of cells is FALSE? within cells
-electron microscopes have greater resolution than light
microscopes
-traditional light microscopes can be used to view
individual protein molecules within cells
-the limit of resolution of traditional light microscopes is
approximately 200nm
-ribosomes can be viewed using an electron microscope
The variation in the physical characteristics between -sequence, three-dimensional shape
different proteins are influences by the different overall
amino acid compositions, but an even more important
characteristic is the unique amino acid which
determines the ___ of the protein.
-number, cellular location
-peptide bond, resistance to denaturation
-sequence, three-dimensional shape
-number, molecular weight
Biologists cannot possibly study all living species. -all of the above
Instead, they try to understand cell behavior by studying
a select subset of species called "model organisms."
Which of the following characteristics are useful in an
organism chosen for use as a model in laboratory
studies?
-amenability to genetic manipulation
-ability to grow under controlled conditions
-rapid rate of reproduction
-all of the above
Which of the following statements is TRUE? -Phosphorylation of serine residues can alter protein function.
-Gel electrophoresis separates proteins based on the
number of alpha-helices and beta-sheets they contain.
-Phosphorylation of serine residues can alter protein
function.
-The amino acids in the interior of a protein do not
interact with the ligand and therefore play no role in
selective binding of the protein to the ligand.
-Antibodies are Y-shaped and are composed of a single
polypeptide chain.
Referring to Figure 1-8 and the accompanying text in -can be used to visualize large ribonucleoprotein complexes, such as ribosomes.
Essential Cell Biology 5th ed, electron microscopy:
-is used to observe living cells.
-has lower resolution than light microscopy.
-can be used to visualize large ribonucleoprotein
complexes, such as ribosomes.
-is not capable of distinguishing between mitochondria
and other organelles, such as lysosomes.
