Exploring DNA and Protein Synthesis Concepts

What was discovered about the swine flu outbreak in 2009?

• It was identical to the avian flu.

• It had no relation to DNA.

• It was caused by a single virus.

• It was a mutant strain from birds, slime, and people.

By the 1930s, what did experiments convince scientists about heredity?

• It was controlled by a mixture of molecules.

• It was solely controlled by proteins.

• It was not related to DNA.

• It was controlled by a single molecule.

Who was the scientist whose data supported Watson and Crick's DNA model?

• Maurice Wilkins

• Rosalind Franklin

• Francis Crick

• James Watson

What are the four main organic molecules studied in biology?

• Carbohydrates, proteins, lipids, nucleic acids

• Carbohydrates, proteins, lipids, vitamins

• Carbohydrates, proteins, minerals, nucleic acids

• Carbohydrates, proteins, lipids, minerals

Which base pairs with adenine (A) in DNA?

• Uracil (U)

• Thymine (T)

• Guanine (G)

• Cytosine (C)

What is the role of helicase in DNA replication?

• It repairs DNA.

• It bonds nucleotides together.

• It unzips the double helix.

• It synthesizes RNA.

During transcription, what does RNA polymerase bind to?

• A ribosome

• A terminator sequence

• A replication bubble

• A promoter or start site

What is the start codon for translation?

• AUG

• UAA

• GAC

• CUA

What is a mutation?

• A change in the nucleotide sequence of DNA

• A normal variation in DNA

• A type of RNA

• A process of DNA replication

What happens when a nucleotide is deleted from a DNA sequence?

• The reading frame remains unchanged.

• The DNA sequence becomes longer.

• A new nucleotide is automatically inserted.

• The reading frame shifts, altering the protein.