DNA_5_2

What is a gene in the context of DNA?

• A) A long, continuous DNA strand

• B) A section of DNA that codes for proteins

• C) The entire DNA molecule

• D) A molecule composed of four bases

Approximately how long is a typical gene in terms of base pairs?

• A) 50-100 base pairs

• B) 500-1000 base pairs

• C) 1000-2000 base pairs

• D) 2000-5000 base pairs

What is the function of a gene's sequence of bases?

• A) To determine the DNA molecule's shape

• B) To store genetic information

• C) To control protein synthesis

• D) To regulate cell division

How many different bases make up the DNA alphabet?

• A) 2

• B) 3

• C) 4

• D) 5

What is the role of DNA in controlling characteristics?

• A) DNA directly controls characteristics by its structure.

• B) DNA controls characteristics by regulating protein synthesis.

• C) DNA controls characteristics through chemical reactions.

• D) DNA influences characteristics through physical traits.

Which molecule is defined as a sequence of bases on a DNA molecule coding for a sequence of amino acids in a polypeptide chain?

• A) Nucleotide

• B) RNA

• C) Gene

• D) Enzyme

What primarily controls the activities of a cell and, consequently, the characteristics of an organism?

• A) Proteins

• B) DNA sequence

• C) Lipids

• D) Carbohydrates

Which type of molecule is responsible for controlling most of the cell's functions, including catalyzing chemical reactions?

• A) Nucleotides

• B) Carbohydrates

• C) Proteins

• D) Lipids

What is the primary function of enzymes in a cell?

• A) Storing genetic information

• B) Regulating DNA replication

• C) Controlling protein synthesis

• D) Catalyzing biochemical reactions

Which of the following is not one of the four bases found in DNA?

• A) Adenine (A)

• B) Thymine (T)

• C) Guanine (G)

• D) Uracil (U)