1) What is the shape of DNA? a) Double helix b) Single strand c) Triple helix d) Circular 2) What type of bond holds DNA strands together? a) Ionic bond b) Hydrogen bond c) Covalent bond d) Metallic bond 3) Which base pairs with Adenine in DNA? a) Thymine b) Cytosine c) Guanine d) Uracil 4) Which RNA type carries amino acids? a) mRNA b) tRNA c) rRNA d) snRNA 5) What is the function of mRNA? a) Carries genetic code b) Forms ribosomes c) Transports amino acids d) Catalyzes reactions 6) What is the role of rRNA? a) Forms ribosomes b) Carries genetic code c) Transports amino acids d) Replicates DNA 7) Which base is unique to RNA? a) Thymine b) Uracil c) Adenine d) Guanine 8) What is the sugar in RNA? a) Ribose b) Deoxyribose c) Glucose d) Fructose 9) Which process synthesizes RNA from DNA? a) Translation b) Transcription c) Replication d) Mutation 10) What is the start codon for protein synthesis? a) AUG b) UAA c) UGA d) UAG 11) Which enzyme synthesizes RNA? a) DNA polymerase b) RNA polymerase c) Ligase d) Helicase 12) What is the role of tRNA? a) Transports amino acids b) Forms ribosomes c) Carries genetic code d) Replicates DNA 13) Which RNA is part of the ribosome? a) mRNA b) rRNA c) tRNA d) snRNA 14) What is the complementary base of Cytosine in DNA? a) Adenine b) Guanine c) Thymine d) Uracil 15) Which process converts mRNA to protein? a) Transcription b) Translation c) Replication d) Mutation 16) What is the backbone of DNA made of? a) Sugar and phosphate b) Protein and lipid c) Carbohydrate and lipid d) Amino acids 17) What is the function of DNA polymerase? a) Synthesizes DNA b) Synthesizes RNA c) Forms ribosomes d) Transports amino acids 18) Which base pairs with Guanine in DNA? a) Cytosine b) Adenine c) Thymine d) Uracil 19) What is the role of hydrogen bonds in DNA? a) Stabilize structure b) Replicate DNA c) Catalyze reactions d) Transport molecules

DNA and RNA Structure and Function Quiz

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