DNA stRuCtuRE

What is the role of thymine in DNA?

• Thymine pairs with cytosine to form base pairs.

• Thymine pairs with guanine to form base pairs.

• Thymine pairs with adenine to form base pairs.

• Thymine is not involved in base pairing.

What are the building blocks of DNA?

• Amino Acids

• Nucleotides

• Fatty Acids

• Monosaccharides

What is a mutation?

• A change in the DNA sequence that can lead to changes in traits.

• A type of virus that infects cells.

• A process of cell division that results in two identical cells.

• A genetic disorder that is inherited from parents.

What is the difference between DNA and RNA?

• DNA is single-stranded and contains uracil; RNA is double-stranded and contains thymine.

• DNA is double-stranded and contains thymine; RNA is single-stranded and contains uracil.

• DNA and RNA are both double-stranded and contain thymine.

• DNA is single-stranded and contains thymine; RNA is double-stranded and contains uracil.

Name this structure: double helix, nucleotide, twisted ladder, hydrogen bond.

• double helix

• twisted ladder

• hydrogen bond

• nucleotide

What makes up the SIDES of a DNA ladder?

• sugars & phosphates

• adenine & thymine

• cytosine & guanine

• nucleotides & ribose

What is the shape of DNA?

• Single helix

• Double helix

• Circular

• Linear

What is the function of DNA?

• To store and transmit genetic information.

• To provide energy for cellular processes.

• To act as a structural component of cells.

• To facilitate communication between cells.

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 determines the specific traits in an organism?

• The sequence of nucleotide bases in the DNA molecule.

• The organism's environment and habitat.

• The amount of sunlight the organism receives.

• The type of food the organism consumes.