Cell Structure and Function

What are the two subunits that make up prokaryotic ribosomes?

• 40S and 60S
• 50S and 30S
• Two identical 40S subunits
• A single 80S unit

What is the primary purpose of fimbriae in bacteria?

• DNA replication
• Energy production
• Attachment to surfaces
• Protein synthesis

What is the main structural component of the bacterial flagellum's filament?

• Carbohydrate
• Lipid
• Nucleic acid
• Protein

Which structure in cyanobacteria contains pigments for photosynthesis?

• Ribosomes
• Chromatophores
• Flagella
• Pili

What is one of the primary roles of the plasma membrane in prokaryotes?

• Facilitating respiration
• Storing genetic material
• Producing ATP exclusively
• Forming the nuclear envelope