Which term refers to long strands of DNA intertwined with protein molecules?

Which term refers to long strands of DNA intertwined with protein molecules?

• A. Chromosomes
• B. Nucleus
• C. Cytoplasm
• D. Ribosomes

Answer: (A)

Chromosomes are the structures that carry genetic material, made of long DNA strands bound to proteins. DNA wraps around histone proteins to form a complex called chromatin, which condenses into chromosomes, especially during cell division. This packaging lets the huge molecule of DNA fit inside the nucleus and ensures accurate replication and inheritance. The nucleus is the compartment that houses chromosomes; cytoplasm is the cell fluid outside the nucleus, and ribosomes are the molecular machines that synthesize proteins. So the term for these long DNA–protein strands is chromosomes.

Chromosomes are the structures that carry genetic material, made of long DNA strands bound to proteins. DNA wraps around histone proteins to form a complex called chromatin, which condenses into chromosomes, especially during cell division. This packaging lets the huge molecule of DNA fit inside the nucleus and ensures accurate replication and inheritance. The nucleus is the compartment that houses chromosomes; cytoplasm is the cell fluid outside the nucleus, and ribosomes are the molecular machines that synthesize proteins. So the term for these long DNA–protein strands is chromosomes.