Cell Structure and Function

Which cellular structure is NOT bound by a membrane?

• Mitochondria
• Chloroplast
• Golgi apparatus
• Nucleolus

What is the primary function of chromatin?

• Generating ATP
• Producing ribosomes
• Storing nutrients
• Packaging DNA

Which structure gives rise to the spindle apparatus in animal cells?

• Nucleus
• Mitochondria
• Ribosome
• Centriole

Which of the following best describes the nuclear pore complex?

• Passive diffusion channel
• Energy generation unit
• Site of DNA replication
• Selective gateway for molecules

Which of the following statements about the nuclear envelope is true?

• It contains only one membrane
• It lacks pores
• It is absent in plant cells
• It has two lipid bilayers