Exploring DNA Structure and Replication

The video tutorial covers the discovery of DNA's structure by Watson and Crick, highlighting the contributions of Rosalind Franklin. It explains the basics of DNA and RNA, the structure of nucleotides, and the process of DNA replication. The tutorial also discusses Chargaff's rule and the semi-conservative nature of DNA replication.

Who are the two scientists credited with discovering the structure of DNA?

• Albert Einstein and Niels Bohr

• James Watson and Francis Crick

• Marie Curie and Rosalind Franklin

• Gregor Mendel and Charles Darwin

What are the two types of nucleic acids?

• DNA and RNA

• Proteins and Carbohydrates

• Lipids and Sugars

• Enzymes and Hormones

Which component is NOT part of a nucleotide?

• A phosphate group

• A five-carbon sugar

• A nitrogenous base

• A lipid molecule

Who was the scientist whose x-ray diffraction photos were crucial to discovering the DNA structure?

• James Watson

• Francis Crick

• Rosalind Franklin

• Maurice Wilkins

Why did Rosalind Franklin not receive the Nobel Prize?

• She had passed away before the prize was awarded

• She did not publish her findings

• She was not involved in the research

• She refused the prize

What shape is the DNA molecule?

• A double helix

• A straight line

• A circular loop

• A single helix

According to Chargaff's rule, which base pairs with adenine (A)?

• Uracil (U)

• Thymine (T)

• Guanine (G)

• Cytosine (C)

What enzyme is responsible for unzipping the DNA double helix during replication?

• Helicase

• DNA polymerase

• Ligase

• Primase

What term describes the DNA replication process where each new DNA molecule contains one original strand and one new strand?

• Conservative replication

• Dispersive replication

• Semi-conservative replication

• Non-conservative replication

What is the role of DNA polymerase in DNA replication?

• Unzipping the DNA strands

• Joining nucleotides to form a new strand

• Breaking hydrogen bonds

• Creating RNA primers