Cell Structure and Function

What is the significance of cristae in mitochondria?

• Stores genetic material
• Divides the cell
• Reduces water content
• Increases surface area

Which of the following best describes the matrix of mitochondria?

• Watery and translucent
• Rigid and fibrous
• Thin and gel-like
• Dense and homogeneous

Which of the following is true about mitochondrial ribosomes?

• They are 80S
• They are absent
• They are smaller than cytoplasmic ribosomes
• They are 70S

What is the function of the intermembrane space in mitochondria?

• Stores DNA
• Synthesizes proteins
• Transports lipids
• Facilitates proton gradient

Which structure separates the two aqueous compartments in mitochondria?

• Outer membrane
• Cristae
• Matrix
• Inner membrane