Cell Structure and Function

Which of the following organelles is found in plant cells but not in animal cells?

• Mitochondria
• Ribosomes
• Lysosomes
• Chloroplasts

Which organisms consist of only a single cell?

• Higher fungi
• Plants
• Animals
• Bacteria, protozoans, and some algae

What is the approximate number of cells in the human body?

• One billion
• Ten billion
• One hundred billion
• One trillion

Which of the following best describes the cell according to cell theory?

• Cells are only present in animals
• The cell is the basic structural and functional unit of all living organisms
• Cells do not perform life processes
• Cells are not found in plants

What is the function of vitamins in the body?

• Primary energy source
• Structural components
• Cofactors for enzymes
• Genetic material