Cell Structure and Function

Which human chromosome is an example of a metacentric chromosome?

• Chromosome 21
• Chromosome 18
• Chromosome 22
• Chromosome 1

Which of the following is true about telocentric chromosomes?

• They have a central centromere
• They have a sub-central centromere
• They have a near-terminal centromere
• They have a terminal centromere

What is the significance of non-histone proteins in chromatin?

• They provide energy for replication
• They degrade old DNA
• They replace histones completely
• They regulate gene activity and chromosome structure

Which of the following best describes the function of histones in chromatin?

• Promote DNA degradation
• Facilitate RNA translation
• Help in DNA packaging
• Inhibit DNA replication

What is the consequence of improper centromere function?

• Increased protein synthesis
• Enhanced DNA replication
• Improved cell signaling
• Chromosomal abnormalities