Nucleic Acids and DNA Quiz

What is the function of DNA in living organisms?

• To provide instructions for protein synthesis

• To act as a structural component of ribosomes

• To regulate gene expression

• To catalyze chemical reactions

Which of the following is NOT a naturally occurring variety of nucleic acid?

• Deoxyribonucleic acid (DNA)

• Ribonucleic acid (RNA)

• Adenosine triphosphate (ATP)

• Uracil nucleotide (UN)

Where is DNA found in eukaryotic cells?

• In the nucleus

• In the mitochondria

• In the chloroplasts

• In the nucleoid

What is the role of messenger RNA (mRNA) in protein synthesis?

• To carry the genetic information from DNA to the ribosomes

• To act as a structural component of ribosomes

• To bring amino acids to the ribosomes

• To regulate gene expression

Which of the following nitrogenous bases is found in RNA but not in DNA?

• Adenine (A)

• Thymine (T)

• Guanine (G)

• Uracil (U)

What is the sugar molecule in DNA called?

• Deoxyribose

• Ribose

• Glucose

• Fructose

How many phosphate groups are attached to the 5' carbon of a nucleotide?

• None

• One

• Two

• Three

What holds the two strands of DNA together in a double helix?

• Hydrogen bonds

• Covalent bonds

• Ionic bonds

• Peptide bonds

Which of the following is NOT a type of RNA involved in protein synthesis?

• Messenger RNA (mRNA)

• Ribosomal RNA (rRNA)

• Transfer RNA (tRNA)

• Regulatory RNA (miRNA)

What is the function of ribosomal RNA (rRNA) in protein synthesis?

• To carry the genetic information from DNA to the ribosomes

• To act as a structural component of ribosomes

• To bring amino acids to the ribosomes

• To regulate gene expression