Drag & Drop Protein Synthesis

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Transcription

Label the process as you did in the online activity.

Questions

  1. Which base in RNA is replaced by Uracil?
  2. How many mRNA codons are illustrated above?
  3. What is the name of the enzyme that creates the mRNA copy from DNA?
  4. What is the name of the sugar in the mRNA nucleotides?
  5. What is the mRNA transcript for the DNA sequence, TTACGC?

Your Turn

In 3 to 5 sentences, describe transcription in protein synthesis. Where does it occur? What function does it serve in protein synthesis? Why is it necessary? Use your notes if you need to.

Translation

Label the process as you did in the online activity.

Questions

  1. What organelle assists tRNA in translating the mRNA in the cytoplasm?
  2. The role of tRNA is to carry a(n):
  3. If the mRNA codon is CGA, the tRNA anticodon that binds with it is:
  4. Is a tRNA anticodon more similar to DNA or RNA in nucleotide sequence?

Your Turn

In 3 to 5 sentences compare and contrast translationand transcription in protein synthesis.

Protein Synthesis 1

Label the process as you did in the online activity.

Questions

  1. How many amino acids are coded for by the DNA?
  2. What protein does this DNA code for?
  3. Instead of ACT, the first DNA triplet was ACG, which amino acid would be coded for?
  4. What amino acid is carried by a tRNA with the anticodon, GUA?

Your Turn

Describe how the nitrogenous bases of the nucleic acid can code for several different types of amino acids.

Protein Synthesis 2

Label the process as you did in the online activity.

Questions

  1. Other than UUU, what is another mRNA codon that codes for Phenylalanine (PHE)?
  2. What is the tRNA anticodon that binds to the codon you typed above?
  3. The role of the ribosome is to help mRNA and tRNA interact. It is made of two subunits and is roughly half ______and half protein.
  4. Sickle cell anemia is a disease of red blood cells in which a genetic mutation in DNA leds to a mutation in hemoglobin. A single base change alters the DNA sequence CTC to CAC, which codes for the wrong amino acid. What amino acid is coded for by the normal DNA sequence, CTC?
  5. For the question above, what amino acid is coded for by the mutated DNA sequence, CTC?

Quiz

  1. Transcription is the first step of Protein Synthesis and it occurs in the:
  2. Translation is the second step of Protein Synthesis and it occurs in the:
  3. If a DNA sequence consists of 12 nucleotides, how many mRNA codons will there be?
  4. The enzyme that creates mRNA from a DNA sequence is called:
  5. Each codon of mRNA (hence each triplet in DNA) codes for one:
  6. The specific amino acid carried by a tRNA is determined by its:
  7. True / False: When amino acids are brought in by tRNA they are joined together by hydrolysis reactions to form the growing protein.
  8. True / False: Whenever a cell needs to, it can unqip DNA and make a transcript of a sequence so that a protein can be made. DNA then sips up.
  9. True / False: The same amino acid can be carried by different tRNAs.
  10. Although not discussed in this activity, Translation actually takes place in 3 steps.

Your Turn

Summarize the topics discussed in this activity in 3 to 5 sentences.