The cell theory applies to

• Bacteria
• Plants and animals
• Multicellular organisms
• All answers are correct

Which of the following contain a nucleus?

• Prokaryotes
• Bacteria
• Eukaryotes
• Organelles

Which of the following organisms are prokaryotes?

• Plants
• Animals
• Bacteria
• All answers are correct

Which of the following statements explains why the nucleus is important to cells?

• Only prokaryotes have a nuclei
• Only eukaryotes have nuclei
• The nucleus protects the genetic material
• The nucleus wastes energy

Which of the following structures serves as the cell’s boundary from its environment?

• Mitochondrion
• Cell membrane
• Chloroplasts
• Channel proteins

Diffusion is the movement of molecules from

• An area of low concentration to an area of high concentration
• An area of high concentration to an area of low concentration
• An area of equilibrium to an area of high concentration
• All answers are correct

When the concentration of molecules on both sides of a membrane is the same, the molecules will

• Move across the membrane to the outside of the cell
• Stop moving across the membrane
• Move across the membrane in both directions (no net movement)
• Move across the membrane to the inside of the cell

Which means of particle transport requires energy?

• Diffusion
• Osmosis
• Facilitated diffusion
• Active transport

The cells of multicellular organisms are

• Smaller than those of unicellular organisms
• Simpler than those of unicellular organisms
• Specialized to perform different tasks
• Not dependent on one another

The organelle that contains the DNA of a eukaryote is the

• Nucleolus
• Chromatin
• Nucleus
• All answers are correct