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Question
name: sara kumar block: mark: out of 25 dna and protein synthesis quest answer: questions: possible choices: 1) which of the following is a possible use of recombinant dna? a) producing steroid hormones b) cloning insulin using bacteria c) cloning tissue cells for transplant d) encouraging nerve cells to regenerate 2) which of the following is a definition of transcription? a) the production of rrna from trna b) the production of mrna from dna c) the production of protein by ribosomes d) the production of new dna before cell division 3) where is structure x produced? a) in the nucleus b) in the nucleolus c) in the ribosomes d) in the endoplasmic reticulum 4) which of the following carries amino acids to the ribosomes? a) dna b) trna c) rrna d) mrna 5) what is the anticodon which corresponds to the dna base sequence gac? a) ctg b) cug c) gac d) guc 6) the dna strand cga tgc gac att undergoes a mutation in which the section coding for the amino acid threonine is lost. which if the following would be the correct codons after this mutation? a) acg cug uaa b) gcu acg cug c) gcu cug uaa d) gcu acg uaa 7) which of the following is the definition of recombinant dna? a) plasmids b) bacterial dna c) dna which has been cloned d) dna from more than one source 8) which of the following differentiates dna from rna? a) dna is linear and rna is a double helix b) dna has deoxyribose and rna has ribose c) dna is single stranded and rna is double stranded d) dna is produced during transcription and rna is produced during replication 9) the following is a sequence of mrna bases: gcu ucu ccu which sequence of amino acids results after translation? a) arginine, serine, stop b) alanine, arginine, stop c) alanine, serine, proline d) arginine, arginine, glycine 10) which of the following is the anticodon of a molecule of trna carrying isoleucine? a) ata b) auu c) taa d) uau
- Recombinant DNA is used to produce insulin via bacteria (e.g., E. coli).
- Transcription is mRNA synthesis from DNA.
- Ribosomes (structure X) are produced in the nucleolus.
- tRNA transports amino acids to ribosomes.
- DNA GAC → mRNA CUG → anticodon GAC (complementary to mRNA).
- DNA CGA TGC GAC ATT → mRNA GCU ACG CUG UAA; losing ACG (threonine) gives GCU CUG UAA.
- Recombinant DNA combines DNA from multiple sources.
- DNA has deoxyribose; RNA has ribose.
- mRNA GCU (alanine), UCU (serine), CCU (proline).
- Isoleucine codon AUA → anticodon UAU.
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- b) producing insulin using bacteria
- b) the production of mRNA from DNA
- b) in the nucleolus
- b) tRNA
- c) GAC
- c) GCU CUG UAA
- d) DNA from more than one source
- b) DNA has deoxyribose and RNA has ribose
- c) alanine, serine, proline
- d) UAU