DNA and RNA Structure

What is the significance of complementary base pairing?

• It ensures accurate replication and transcription of genetic information.

• It allows for the formation of hydrogen bonds between nucleotides.

• It prevents mutations in the DNA sequence.

• It facilitates the translation of RNA into proteins.

What is a mutation?

• A change in the DNA sequence that can lead to changes in protein structure and function.

• A process that repairs damaged DNA sequences.

• A type of genetic engineering used to create new species.

• A method of cell division that produces identical cells.

What base pair does Adenine (A) bind with in RNA?

• Thymine (T)

• Guanine (G)

• Uracil (U)

• Cytosine (C)

Guanine bonds with which base?

• Adenine

• Thymine

• Cytosine

• Uracil

What are the four nitrogenous bases in DNA?

• Adenine, Thymine, Cytosine, Guanine

• Adenine, Uracil, Cytosine, Guanine

• Adenine, Thymine, Cytosine, Uracil

• Guanine, Thymine, Cytosine, Adenine

What are the three components of a nucleotide?

• Sugar, phosphate, nitrogen base.

• Amino acids, sugars, lipids.

• Glucose, ribose, deoxyribose.

• Phosphate, nitrogen base, fatty acid.

What is the structure of DNA?

• A single strand of amino acids.

• A double helix composed of two strands of nucleotides.

• A triple helix of ribonucleic acid.

• A linear chain of sugars and phosphates.

What is a codon?

• A sequence of three nucleotides in mRNA that codes for a specific amino acid.

• A type of protein that helps in DNA replication.

• A single nucleotide that can code for multiple amino acids.

• A sequence of amino acids that forms a protein.

What is transcription in the context of DNA and RNA?

• The process of copying a segment of DNA into mRNA.

• The process of translating mRNA into protein.

• The process of replicating DNA for cell division.

• The process of modifying RNA after transcription.

What is the difference between DNA and RNA?

• DNA is single-stranded and contains ribose sugar.

• DNA is double-stranded and contains deoxyribose sugar; RNA is single-stranded and contains ribose sugar.

• DNA contains uracil, while RNA contains thymine.

• DNA is found in the cytoplasm, while RNA is found in the nucleus.