Cell Structure and Function

Why do multicellular organisms exhibit division of labour?

• To reduce work load
• To increase reproduction
• To grow larger
• Cells specialize to perform different functions

What is a key characteristic of prokaryotic DNA?

• Linear and enclosed
• Enclosed in a nucleus
• Linear with histones
• It is circular

Which of the following is also a double membrane-bound organelle besides mitochondria?

• Vacuole
• Endoplasmic reticulum
• Chloroplast
• Lysosome

Name a double-membrane bound organelle.

• Ribosome
• Lysosome
• Mitochondrion
• Golgi apparatus

Can polar molecules cross the plasma membrane by simple diffusion?

• Yes
• Only in water
• Only at high temperature
• No