Question

question 7
the rigid barrier that surrounds bacteria is the:
a cell membrane
b cell wall
c flagellum
d plasma membrane
e cytoplasm

question 8
what name is used to describe bacterial cells that are spiral - shaped?
a spirilla
b bacilli
c cocci
d cubes

question 9
bacteria or archeans can live in:

Explanation:

• Question 7:
• The cell membrane (plasma membrane) is a semi - permeable layer, not rigid.
• The cell wall is a rigid structure that provides shape and protection to bacteria.
• The flagellum is for movement.
• The cytoplasm is the internal fluid - like substance.
• Question 8:
• Spirilla are spiral - shaped bacteria.
• Bacilli are rod - shaped.
• Cocci are spherical.
• Cubes is not a standard bacterial shape term.

Answer:

• Question 7: B. Cell wall
• Question 8: A. Spirilla