3. The bacterium Streptococcus mutans contains intracellular glycogen storage gr
ID: 12291 • Letter: 3
Question
3. The bacterium Streptococcus mutans contains intracellular glycogen storage granules.
These storage granules
a. are inclusions.
b. would be found in the nucleoid of the cell.
c. allow S. mutans to float or sink to the desired level when in an aqueous
environment.
d. would be present in highest number in the cell when the concentration of external
nutrients is low (and has been continually low).
e. all of the above
4. Which one of the following would predominate within a glycogen storage granule?
a. glycosidic bonds
b. 3’-5’-phosphodiester bonds
c. peptide bonds
d. triacylglycerols
5-Polypeptide chain #1: Amino-DGTFPLEDLTLIPTSDPFPLIE-Carboxyl
Polypeptide chain #2: Amino-KRTFPLRSLKTLIPTSPFPLIR-Carboxyl
Which statements are TRUE? [Please note that this is a multiple answer question; select all that apply.]
a. Polypeptide chain #1 carries an overall negative charge in the cell (at neutralpH).
b. Polypeptide chain #1 is basic.
c. Polypeptide chain #2 carries an overall negative charge in the cell (at neutralpH).
d. Polypeptide chain #2 is basic.
Explanation / Answer
uploaded image1Nucleotides
a. appear as follows:
b. are linked by 3’-5’ phosphodiester bonds to form nucleic acids.
c. are the subunits composing glycogen and cellulose.
d. comprise (make up) oligosaccharides
2. The nucleoid of a bacterial cell is a gel-like mass that contains the genetic material of the
cell, packaged, in part, by proteins. Which one of the following is the least likely found in
the nucleoid?
a. Nucleic acids
b. 3’-5’ phosphodiester bonds
c. amino acids
d. triacylglycerols
3. The bacterium Streptococcus mutans contains intracellular glycogen storage granules.
These storage granules
a. are inclusions.
b. would be found in the nucleoid of the cell.
c. allow S. mutans to float or sink to the desired level when in an aqueous
environment.
d. would be present in highest number in the cell when the concentration of external
nutrients is low (and has been continually low).
e. all of the above
4. Which one of the following would predominate within a glycogen storage granule?
a. glycosidic bonds
b. 3’-5’-phosphodiester bonds
c. peptide bonds
d. triacylglycerols
5-Polypeptide chain #1: Amino-DGTFPLEDLTLIPTSDPFPLIE-Carboxyl
Polypeptide chain #2: Amino-KRTFPLRSLKTLIPTSPFPLIR-Carboxyl
Which statements are TRUE? [Please note that this is a multiple answer question; select all that apply.]
a. Polypeptide chain #1 carries an overall negative charge in the cell (at neutralpH).
b. Polypeptide chain #1 is basic.
c. Polypeptide chain #2 carries an overall negative charge in the cell (at neutralpH).
d. Polypeptide chain #2 is basic.
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