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5 Written Questions

5 Matching Questions

  1. Steps of Protein Synthesis
  2. ribosome
  3. Cytosine
  4. DNA mutation
  5. Steps of Transcription
  1. a an organelle in the cytoplasm of a living cell which attach to mRNA and move down it one codon at a time and stop until tRNA brings the required amino acid; when a ribosome reaches a stop codon it falls apart and releases the completed protein molecu
  2. b DNA strand unwinds and separates, one strand directs synthesis of mRNA, RNA polymerase binds to promoter sequence, nucleotides are added
  3. c initiation, elongation, termination Transcription unit of DNA--> Upstream from transcription unit is TATA box (promoter)--> May or may not have Enhancer region--> Transcription factors bind to the DNA using the promoter to position itself near initiation site--> TFs prepare DNA for binding of RNA polymerase-->RNA pol separates DNA strands so it can add ribonucleotide triphosphate monomers to the RNA transcript--> RNA Polymerase reads the template strand from its 3'→5' end and the RNA grows from 5'→3'-->RNA Polymerase dissociates and the RNA strand is released
  4. d The base that pairs with Guanine with DNA
  5. e When an error is made during DNA replication. It is the basis of all genetic variability. If there is a mistake in DNA replication then the RNA is affected, so amino acids and proteins are affected too.

5 Multiple Choice Questions

  1. (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes EX. it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in th
  2. The base that pairs Adenine in DNA
  3. initiation; elongation; termination A ribosome assembles on the start codon AUG-->tRNA with the anticodon UAC, and carrying the amino acid methionine, binds to the codon-->tRNA complimentary the the 2nd mRNA triplet binds to its codon-->amino acid that's carried by the 2nd tRNA binds to the methionine-->1st tRNA leaves the P site of the Ribosome and the 2nd tRNA moves there which leaves the A site of the ribosome open for the 3rd tRNA to bind to its codon--> 3rd amino acid is added to the chain
  4. Ribosomal RNA (rRNA) is the main component of the cell's protein synthesis factory the Ribosome. it is produced by RNA Polymerase I. Transfer RNA (tRNA) is responsible for converting the nucleotide sequence code into the amino acid sequence in proteins. it is produced by RNA Polymerase III. Messenger RNA (mRNA)- each one contains the sequence information needed to construct one type of protein molecule. the multiple mRNA molecules are produced by RNA Polymerase II (bring message from nucleus to cytoplasm)
  5. the formation of proteins by using information contained in DNA and carried by mRNA

5 True/False Questions

  1. Replication(genetics) the process whereby DNA makes a copy of itself before cell division

          

  2. AdenineThe base that pairs with Thymine in DNA

          

  3. genetic codeThe base that pairs with Thymine in DNA

          

  4. Translation(genetics) the process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm

          

  5. Transcription(genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA EX. the process whereby a base sequence of messenger RNA is synthesized on a template of complementary DNA

          

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