Cell Structure and Function

What structures increase the surface area of the inner mitochondrial membrane?

• Thylakoids
• Grana
• Vacuoles
• Cristae

What is the fluid-filled matrix of the mitochondrion called?

• Stroma
• Cytosol
• Lumen
• Matrix

Which membranes divide the mitochondrion into compartments?

• Cell membrane and nuclear membrane
• Thylakoid and stroma membranes
• Plasma membrane and vesicle membrane
• Outer and inner membranes

Which of the following is not a function of the mitochondrial matrix?

• Krebs cycle
• Storage of DNA
• Protein synthesis
• Electron transport chain

Which of the following statements about mitochondria is incorrect?

• They produce ATP
• They have their own DNA
• They are found in all cells
• They divide by fission