Cell Structure and Function

What is the primary function of nuclear pores in the nuclear membrane?

• They synthesize ribosomal subunits
• They provide structural support to the nucleus
• They allow the transport of large molecules between the nucleus and cytoplasm
• They initiate DNA replication

Which of the following best describes the structural organization of basal bodies in cells?

• They have a 9+2 doublet microtubule arrangement
• They have a 9+0 triplet microtubule arrangement
• They lack any organized microtubule structure
• They consist of a single central microtubule

Which of the following cell organelles contains its own DNA and ribosomes?

• Lysosome
• Golgi apparatus
• Endoplasmic reticulum
• Mitochondria

In which part of the mitochondria does the oxidation of pyruvic acid occur?

• Outer membrane
• Intermembrane space
• Cristae
• Matrix

Which of the following is a structural feature of mitochondria observed under an electron microscope?

• Cilia on the surface
• A large central vacuole
• Cristae formed by folding of the inner membrane
• Cell wall made of cellulose