7. Which base pairing in DNA is correct? A. Adenine pairs with Guanine B. Thymine pairs with Cytosine C. Adenine pairs with Thymine D. Cytosine pairs with Thymine 8. What type of bonds connect complementary base pairs in DNA? A. Covalent bonds B. Ionic bonds C. Hydrogen bonds D. Peptide bonds 9. The process of making a copy of DNA is called: A. DNA Translation B. DNA Replication C. DNA Transcription D. DNA Mutation 10. Which enzyme is responsible for "unzipping"DNA during replication? A. DNA Polymerase B. RNA Polymerase C. Ligase D. Helicase 11. The enzyme that adds new nucleotides during DNA replication is: A. DNA Polymerase B. Helicase C. Primase D. Ligase 12. What is the primary function of RNA in cells? A. Energy storage B. Structural support C. Carrying genetic instructions for protein synthesis D. Breaking down proteins 13. Which of these is NOT a type of RNA? A. mRNA B. IRNA C. dRNA D. rRNA

7. The correct answer is C. Adenine pairs with Thymine. In DNA, adenine (A) forms a base pair with thymine (T), and cytosine (C) forms a base pair with guanine (G).<br /><br />8. The correct answer is C. Hydrogen bonds. Complementary base pairs in DNA are connected by hydrogen bonds. Adenine pairs with thymine through two hydrogen bonds, while cytosine pairs with guanine through three hydrogen bonds.<br /><br />9. The correct answer is B. DNA Replication. DNA replication is the process of making a copy of DNA. It involves the unwinding of the DNA double helix and the synthesis of new complementary strands.<br /><br />10. The correct answer is D. Helicase. Helicase is the enzyme responsible for "unzipping" DNA during replication. It unwinds the DNA double helix by breaking the hydrogen bonds between the base pairs.<br /><br />11. The correct answer is A. DNA Polymerase. DNA Polymerase is the enzyme that adds new nucleotides during DNA replication. It synthesizes the new complementary strand by adding nucleotides in the 5' to 3' direction.<br /><br />12. The correct answer is C. Carrying genetic instructions for protein synthesis. The primary function of RNA in cells is to carry genetic instructions for protein synthesis. Messenger RNA (mRNA) carries the genetic code from DNA to the ribosomes, where proteins are synthesized.<br /><br />13. The correct answer is C. dRNA. The types of RNA include mRNA (messenger RNA), tRNA (transfer RNA), and rRNA (ribosomal RNA). dRNA is not a recognized type of RNA.