Cell Structure and Function

What term describes the primary constriction of a chromosome?

• Telomere
• Kinetochore
• Chromatid
• Centromere

What is the function of the kinetochore?

• Storage of DNA
• Site for attachment of spindle fibers
• Initiates DNA replication
• Regulates gene expression

Which organelle is most directly involved in the formation of the mitotic spindle in animal cells?

• Nucleus
• Mitochondria
• Golgi apparatus
• Centriole

What is the main function of the nucleolus in ribosome production?

• Translates mRNA
• Replicates DNA
• Modifies proteins
• Combines rRNA with proteins

Which part of the centriole plays a role in organizing microtubules?

• Central hub
• Nuclear pore
• Nucleolus
• Peripheral fibrils