Cell Structure and Function

What is the function of spindle microtubules during metaphase?

• Separate sister chromatids
• Break down the nuclear envelope
• Reform the nucleus
• Align chromosomes at the equator

Which of the following statements about kinetochores is correct?

• They are made of carbohydrates
• They are made of lipids
• They are made of RNA
• They are made of protein

Which of the following is not a type of chromosome based on centromere position?

• Metacentric
• Sub-metacentric
• Acrocentric
• Pseudo-metacentric

What is the function of telomeres?

• Initiate DNA replication
• Attach spindle fibers
• Control gene expression
• Protect the ends of chromosomes

What is the result if a cell fails to properly segregate its chromosomes?

• Polyploidy
• Mutations
• Apoptosis
• Aneuploidy