Cell Structure and Function

Why is the cell called the functional unit of life?

• It is very large
• It is colorful
• It has no function
• It performs all life processes

Which of the following best explains why viruses are not considered living?

• They are too small
• They cause diseases
• They are not visible
• They lack cells

Which scientist extended cell theory to animals?

• Antonie Von Leeuwenhoek
• Robert Brown
• Matthias Schleiden
• Theodore Schwann

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

• All living things are made of cells
• Cells are the basic unit of life
• All cells come from existing cells
• Cells can arise from non-living matter

Which of the following is a key difference between prokaryotic and eukaryotic cells?

• Size only
• Shape only
• Color differences
• Presence or absence of a nucleus