Cromatina

DNA is coiled around structural proteins called histones, allowing long molecules to form compact structures within cells. This coiling is crucial for processes such as cell mitosis, DNA replication, and gene expression.

What are the structural proteins around which DNA is coiled?

• Carbohydrates

• Enzymes

• Histones

• Lipids

Why is DNA coiling around Histones important?

• It prevents DNA replication.

• It allows DNA to form compact structures.

• It helps in DNA degradation.

• It causes DNA to become unstable.

Which of the following processes is NOT facilitated by Histones?

• Protein digestion

• Gene expression

• DNA replication

• Cell mitosis

What role do Histones play in gene expression?

• They inhibit gene expression.

• They facilitate gene expression.

• They have no role in gene expression.

• They destroy gene expression.

Which process is directly associated with Histones?

• Lipid metabolism

• Photosynthesis

• Cell mitosis

• Protein synthesis