Cell Biology and Ageing Quiz

What is the primary function of the extracellular membrane?

• To facilitate cell division

• To create an enclosed space separating internal and external environments

• To store genetic information

• To produce energy

What are sister chromatids?

• Non-identical chromosomes

• Different genes on the same chromosome

• Chromosomes that have not yet divided

• Identical copies of a chromosome

What is the role of histones in chromosomes?

• To replicate DNA

• To synthesize proteins

• To transport RNA

• To organize and condense DNA

What happens during the S phase of interphase?

• Cell growth occurs

• Cytokinesis occurs

• DNA replication takes place

• Mitosis begins

What is the main function of telomeres?

• To facilitate cell division

• To protect the ends of DNA molecules

• To code for proteins

• To store genetic information

What is a stem cell?

• A cell that can only divide once

• A cell that can differentiate into specialized cells

• A cell that cannot divide

• A cell that is fully differentiated

What is a benign tumor?

• A tumor that spreads to other parts of the body

• A tumor that does not invade surrounding tissues

• A tumor that is always cancerous

• A tumor that is easy to remove

What is the process called when cancer cells spread to other parts of the body?

• Cytokinesis

• Metastasis

• Mitosis

• Apoptosis

What are nucleotides?

• The building blocks of carbohydrates

• The building blocks of lipids

• The building blocks of proteins

• The building blocks of nucleic acids

What is the role of telomerase?

• To add bases to telomeres

• To repair damaged DNA

• To replicate DNA

• To synthesize RNA