1) What is the structure of DNA? a) mRNA b) A U G C A A C G U c) Double Helix d) Ribosome e) single strand 2) A single strand of DNA acts as a template for a) Nitrogenous Bases b) mRNA c) Double Helix d) Ribosome 3) In messenger RNA, each codon specifies a particular a) A U G C A A C G U b) Amino Acid c) tRNA d) TAGCA 4) The genetic code in DNA depends upon the order or sequence of a) TAGCA b) RNA and proteins c) anticodon d) Nitrogenous Bases 5) if a strand of DNA has the nitrogenous base of ATCGT what will be the complementary strand of DNA is? a) mRNA b) TAGCA c) Thymine d) Double Helix e) UTGCU 6) What type of RNA is responsible for bringing amino acids to the ribosome for protein synthesis? a) in the nucleus b) tRNA c) Nitrogenous Bases d) Amino Acid e) mRNA 7) The messenger RNA will carry the DNA’s instructions out of the nucleus to the a) Ribosome b) in the nucleus c) TAGCA d) Thymine 8) This is the DNA strand T A C G T T G C A what would the mRNA be? a) Thymine b) in the nucleus c) TAGCA d) A U G C A A C G U e) U A C G U U C G G 9) The three bases on the tRNA molecule that are complementary to one of the mRNA codons are calledthe a) Amino Acid b) RNA and proteins c) Ribosome d) anticodon e) codon 10) which nucleotide is always paired with Adenine IN a DNA MOLECULE? a) TAGCA b) A U G C A A C G U c) anticodon d) Thymine e) Guanine 11) Ribosomes are made out of? a) TAGCA b) Thymine c) RNA and proteins d) Amino Acid 12) Where in the cell does transcription take place? a) in the nucleus b) anticodon c) tRNA d) A U G C A A C G U e) in the mRNA 13) which nucleotide is always paired with Guanine IN a DNA MOLECULE? a) Cytosine b) Uracil c) Adenine d) Thymine 14) The process of making a complementary RNA message from a DNA code (DNA RNA) is called? a) translation b) Transcription c) replication 15) DNA stands for Deoxyribonucleic acid. a) True b) False 16) A mutation that changes C to G is a transition mutation a) True b) False 17) Frameshifting mutation changes the amino acid sequence from the site of the mutation a) True b) false 18) There is only 1 type of mutation. a) True b) False 19) A gene is a length of a DNA. a) True b) False 20) Identical twins have the same genes. a) True b) False

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