1) What is the difference between DNA and RNA in terms of bases? a) RNA contains uracil in place of thymine b) RNA contains uracil in place of adenine c) RNA contains uracil in place of guanine 2) RNA has how many strands? a) one b) two c) three 3) Identify. a) rRNA b) tRNA c) mRNA 4) Identify. a) DNA b) mRNA c) tRNA d) rRNA 5) Where does transcription occur? a) Cytoplasm b) Mitochondria c) Nucleus d) ER 6) How would the DNA sequence GCTATA be transcribed to mRNA? a) GCUAUA b) CGATAT c) CGAUAU d) GCUTUT 7) In eukaryotes, functional messenger RNA molecules are made from a) exons spliced together after introns are removed b) introns spliced together after eons are removed c) exons spliced together with introns d) long pieces of RNA shortened by the Dicer enzyme 8) In messenger RNA, each codon specifies a particular a) nucleotide b) enzyme c) amino acid d) promoter 9) Carries the amino acid used to make a protein a) mRNA b) rRNA c) tRNA 10) Factory for making a protein a) mRNA b) rRNA c) tRNA 11) What is the product of transcription? a) DNA b) mRNA c) tRNA d) proteins 12) Which type of RNA takes the instructions from the nucleus to the cytoplasm? a) mRNA b) tRNA c) rRNA d) RNA polymerase 13) What type of RNA is shown in this image? a) rRNA b) mRNA c) tRNA 14) This image shows a picture of a ribosome - what type of RNA is this? a) rRNA b) mRNA c) tRNA 15) Three consecutive nucleotides on a mRNA molecule a) Translation b) Transcription c) anticodon d) codon 16) Three consecutive nucleotides on a tRNA molecule a) Translation b) Transcription c) anticodon d) codon 17) which process is shown? a) diffusion b) repiration c) recombination d) translation 18) What molecules do both DNA and RNA contain? a) uracil b) nucleotides c) thymine d) deoxyribose 19) The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino acids are coded for by this message? a) 4 b) 8 c) 12 d) 20 20) DNA sequence is ACAGTGC. How would this be coded on mRNA? a) TGTCACG b) UGUCACG c) GUGACAU d) CACUGUA 21) Genetic info flows in one direction. Which best represents this flow? a) DNA-protein-RNA b) Protein-RNA-DNA c) RNA-protein-DNA d) DNA-RNA-protein 22) Which process? a) mutation b) transcription c) respiration d) translation 23) An RNA and DNA polymers are composed of subunits known as a) polysaccharides b) ribose molecules c) nucleotides d) uracil molecules 24) Proteins are polymers made of monomers called a) nucleotides b) lipids c) amino acids d) nitrogen bases 25) Which of the following is created directly from DNA? a) tRNA only b) mRNA only c) tRNA and mRNA d) proteins 26) What happens during translation? a) mRNA is made from DNA b) the ribosome uses information from mRNA to assemble proteins c) tRNA is made from mRNA d) copies of DNA molecules are made 27) A codon consists of how many nucleotides a) 4 b) 5 c) 3 28) Transcription occurs where? a) ribosomes b) the cytoplasm c) the nucleus d) the rough ER 29) Codons each code for a) a protein b) an enzyme c) an amino acid d) a nucleotide 30) Transcribe the following: 3'-TACCCGTAT-5' a) 5'-AUGGGCAUA-3' b) 3'-AUGGGCAUA-5' c) 5'-AUGCCGAUA-3' d) 5'-ATGCCGATA-3' 31) The anticodon is located on a) DNA b) mRNA c) tRNA d) rRNA 32) Amino acids are bonded together by a a) hydrogen bond b) peptide bond c) ionic bond d) they are not bonded 33) Protein synthesis takes place in two parts: a) Transcription then translation b) Replication then transcription c) Translation then transcription d) Replication then translation 34) RNA is different from DNA in ___ a) RNA is single stranded b) RNA has uracil c) RNA has the sugar ribos d) All of these 35) Transcribe the sequence of DNA ATTCAGAGG a) ATTCAGAGG b) TAAGACTCC c) UAAGUCUCC d) UACGAUCGG 36) mRNA stands for a) my RNA b) messenger RNA c) mitosis RNA d) mutated RNA

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