Exploring DNA Structure and Replication

The video tutorial covers the structure and function of DNA, explaining its role in storing genetic information, its double helix structure, and the universality of its backbone. It details the composition of DNA, including the phosphate-sugar backbone and the four bases (A, T, C, G), and explains base pairing rules. The process of DNA replication is described, highlighting the roles of enzymes like helicase and polymerase. The tutorial also provides resources for further exploration of DNA models.

What does DNA stand for?

• Deoxyribose Nitric Acid

• Deoxyribonitric Acid

• Deoxyribose Nucleic Acid

• Deoxyribonucleic Acid

Which of the following is NOT a function of DNA?

• Producing energy for the cell

• Being easy to copy and duplicate

• Carrying information to the next generation

• Storing genetic information

What is the shape of the DNA molecule?

• Quadruple helix

• Triple helix

• Double helix

• Single helix

What are the two main components of the DNA backbone?

• Phosphate and glucose

• Ribose and deoxyribose

• Phosphate and deoxyribose

• Phosphate and ribose

Which of the following is NOT one of the four DNA bases?

• Cytosine

• Adenine

• Thymine

• Uracil

What are the three components of a nucleotide?

• Phosphate, ribose, and nitrogen base

• Phosphate, sugar, and nitrogen base

• Phosphate, glucose, and nitrogen base

• Phosphate, deoxyribose, and ribose

Which base pairs with adenine in DNA?

• Thymine

• Guanine

• Cytosine

• Uracil

What type of bond holds the DNA bases together?

• Ionic bond

• Metallic bond

• Hydrogen bond

• Covalent bond

Which enzyme is responsible for unzipping the DNA during replication?

• Primase

• Polymerase

• Helicase

• Ligase

What is the role of DNA polymerase in DNA replication?

• Removing RNA primers

• Connecting Okazaki fragments

• Adding nucleotides to the new strand

• Unzipping the DNA strands