Cell Structure and Function

What is the largest known cell?

• Human ovum
• Amoeba
• Bacteria
• Ostrich egg

Which of the following is a characteristic feature of prokaryotic cells?

• Presence of mitochondria
• Large central vacuole
• They lack a well-defined nucleus
• Well-formed nuclear membrane

What are the two basic types of cells recognized by cytologists?

• Plant and animal cells
• Prokaryotes and eukaryotes
• Autotrophs and heterotrophs
• Unicellular and multicellular

Which of the following is NOT a part of the cell theory?

• All organisms are composed of cells
• Cell is the structural and functional unit of life
• Cells arise from pre-existing cells
• Cells contain membrane-bound organelles

What is the main component of protoplasm in a cell?

• Cell wall and vacuole
• Plasma membrane and DNA
• Cytoplasm and nucleus
• Ribosomes and lysosomes