Draw a bacterial prokaryotic cell and identify the following structures: capsule, wall
cell, cell membrane, cytoplasm, ribosomes, nucleoid, frimbrae, flagellum, plasmid and
sexual pili. (5 points)
2. Say the function of the structures mentioned in the previous question. (5 points)
3. Bacteria can be classified according to the composition of the cell wall in gram positive
or gram negative. Select the correct answer for each characteristic. For example:
Peptidoglycan layer, thick or thin. You choose whether it is thick or thin.
Gram Positive Gram Negative Characteristic
to. Thick or thin peptidoglycan layer thick or thin
b. Teichoic acid present or absent present or absent
c. Outer membrane present or absent present or absent
d. Content of
lipopolysaccharides
does not have or high
concentrations
does not have or high
concentrations
and. lipid and content
lipoprotein
low or high low or high
F. Flagellar structure 2 rings or 4 rings on the
basal body
2 rings or 4 rings on the
basal body
g. Toxin that produces Exotoxins or Endotoxins
or both
Exotoxins or endotoxins
or both
h. Breakdown resistance
physical
low or high low or high
i. wall break
cell with lysozyme
low or high low or high
J. susceptibility to penicillin and
sulfonamide
low or high low or high
k. Inhibition by basic dyes low or high low or high
l. Detergent Susceptibility
anionic
low or high low or high
m. Resistance to sodium azide low or high low or high
n. Drying resistance low or high low or high
4. Explain what would happen to a bacterium if it is placed in: (3 points)
to. hypotonic solution
b. isotonic solution
c. isotonic solution
5. Name three differences between a eukaryotic cell and a prokaryotic cell. (3 point
