Cell Structure and Function

Which type of chromosome has a centromere located exactly in the middle?

• Sub-metacentric
• Acrocentric
• Telocentric
• Metacentric

What is the main function of the centromere?

• Initiates transcription
• Replicates DNA
• Holds two sister chromatids together
• Controls apoptosis

What is the length of DNA in a single human cell?

• Approximately 1 meter
• Approximately 2 meters
• Approximately 10 meters
• Approximately 20 meters

What is the composition of chromatin?

• RNA only
• DNA + lipids
• Proteins only
• DNA + histones + non-histone proteins + RNA

How many chromosomes are present in a typical human cell during interphase?

• 23
• 92
• 46
• 2