Cell Biology Assessment for 9th Grade

What is the basic unit of structure and function in all living things?

• Nucleus
• Cell
• Organelle
• Chromosome

According to cell theory, where do all cells come from?

• Spontaneous generation
• Other cells
• Chemical reactions
• Organic matter

Which of the following is NOT found in all cells?

• Ribosomes
• Nucleus
• Cell membrane
• Cytoplasm

What is the primary function of ribosomes?

• Energy production
• Protein synthesis
• Cell division
• Waste removal

Which type of cell lacks membrane-bound organelles?

• Eukaryotic cells
• Plant cells
• Prokaryotic cells
• Animal cells

What are chromosomes primarily composed of?

• Lipids and carbohydrates
• DNA and proteins
• RNA and minerals
• Cellulose and water

Which structure is present in both prokaryotic and eukaryotic cells?

• Mitochondria
• Cell membrane
• Nucleus
• Endoplasmic reticulum

What defines an organelle?

• Presence of DNA
• Ability to reproduce
• Membrane-bound structure with specific function
• Presence of proteins

Which of these is characteristic of eukaryotic cells?

• Lack of nucleus
• Presence of organelles
• Simple cell structure
• No membrane-bound structures

What component carries genetic information in all cells?

• Ribosomes
• Cytoplasm
• Chromosomes
• Cell membrane