16) Cells that elongate their cell walls prior to septation and septate in parallel planes will form
Choose one:
A. tetrads of rods (bacilli).

B. chains of rods (bacilli).

C. tetrads of spheres (cocci).
D. chains of spheres (cocci).


18) The major organic component (by total weight) of a bacterial cell is ________________.

Choose one:
A. DNA
B. protein
C. water
D. RNA

15)Proteins that transport only one kind of molecule down (with) that molecule’s concentration gradient are involved in
Choose one:
A. passive transport.
B. active transport.
C. facilitated diffusion.
D. coupled transport.

5)Which of the following is the most convincing evidence for the bacterial origin of mitochondria?
Choose one:
A. Mitochondria contain a circular chromosome.
B. Mitochondria are surrounded by a single membrane.
C. Mitochondria contain their own ribosomes.
D. There is only one mitochondrion per eukaryotic cell.