Cell Structure and Function

Which of the following is a characteristic of eukaryotic ribosomes?

• Composed of 50S and 30S subunits
• Found in the nucleus
• Composed of 60S and 40S subunits
• Free in the cytoplasm only

Which of the following structures is NOT found in both prokaryotic and eukaryotic cells?

• Ribosomes
• Plasma membrane
• Mitochondria
• Cytoplasm

What is the function of cyanophycean granules in prokaryotes?

• Producing energy
• Storing food reserves
• Facilitating movement
• Synthesizing proteins

Which of the following is NOT a type of locomotory structure in prokaryotes?

• Flagella
• Cilia
• Pseudopodia
• None of the above

What is the role of the plasma membrane in secretion in prokaryotes?

• Storing nutrients
• Replicating DNA
• Transporting materials out of the cell
• Synthesizing ribosomes