7. Prokaryotic Cell Structures & Functions

Your culture from a pneumonia patient appears not to have grown. You do see colonies, however, when the plate is viewed at 100x.

a. Chlamydia

b. Coccidioides

c. Histoplasma

d. Mycobacterium

e. Mycoplasma

The type of reproduction in prokaryotes that results in a palisade arrangement of cells is called ___________ .

a. pleomorphic division

b. endospore formation

c. snapping division

d. binary fission

Use the following choices to answer questions 2–5:

a. Candida

b. Chlamydia

c. Gardnerella

d. Neisseria

e. Trichomonas

Microscopic examination of vaginal smear shows epithelial cells covered with bacteria.

Use the following choices to answer questions 2–5:

a. Candida

b. Chlamydia

c. Gardnerella

d. Neisseria

e. Trichomonas

Microscopic examination of vaginal smear shows gram-negative cocci in phagocytes.

Label the shapes of these prokaryotic cells.

a. ___________ <IMAGE>

b. ___________ <IMAGE>

c. ___________ <IMAGE>

d. ___________ <IMAGE>

e. ___________ <IMAGE> stiff

f. ___________ <IMAGE> flexible

g. ___________ <IMAGE>

Match the following cell morphologies with the correct description:

1) ______:Diplobacilli                     A. Long spiral with flexible cells.

2) ______:Streptococci                  B. Single rod-shaped cell.

3) ______:Vibrio                             C. 2 rod-shaped cells that remain attached.

4) ______:Diplococci                     D. Cluster of 4 spherical cells arranged on one plane.

5) ______:Spirochete                    E. 2 spherical cells that remain attached.

6) ______:Tetrad                            F. Comma-shaped, short & bent cells.

7) ______:Single Bacillus              G. 2 short rod-shaped (or oval) cells that remain attached.

8) ______:Coccobacilli                  H. Chain-like pattern of spherical cells.

9) ______:Staphylococci               I. Cluster of 8 spherical cells arranged like a cube.

10) ______:Spirillium                      J. Curved rod that forms a spiral.

11) ______:Sarcinae                        K. Chain-like pattern of rod-shaped cells.

12) ______:Streptobacilli                L. Cluster of many spherical cells in a randomized pattern.

For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.

__________ If you were to view staphylococci, you should expect to see clusters of cells.

State the shape and arrangement of the pictured bacterial samples. <IMAGE>