Cell Structure and Function

Which of the following organisms lacks a cell wall?

• E. coli
• Bacillus
• Mycoplasma
• Streptococcus

What is the function of mesosomes in prokaryotic cells?

• Store genetic material
• Synthesize proteins
• Increase surface area of the plasma membrane
• Regulate osmosis

What is the outermost layer of the bacterial cell envelope called?

• Cell wall
• Plasma membrane
• Nucleoid
• Glycocalyx

Which type of staining classifies bacteria into Gram-positive and Gram-negative?

• Ziehl-Neelsen staining
• Pap staining
• Wright staining
• Gram staining

What is the primary difference between prokaryotic and eukaryotic cells?

• Cell size
• Reproduction method
• Presence of ribosomes
• Presence of a nucleus