Cell Structure and Function

What gives shape and rigidity to plant cells?

• Plasma membrane
• Cytoplasm
• Nucleus
• Cell wall

Why is iodine solution used when observing onion cells?

• It kills the cells
• It increases magnification
• It prevents drying out
• It stains the nucleus and cell walls

Which part of the onion is used to prepare a temporary mount?

• Mesophyll
• Xylem
• Phloem
• Epidermis

Which of the following organisms is NOT unicellular?

• Amoeba
• Paramoecium
• Bacteria
• Spirogyra

Which scientist stated that all cells arise from pre-existing cells?

• Schwann
• Hooke
• Brown
• Rudolf Virchow