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Neuron Nudge 2/5. Identify each sequence below as belonging to DNA, RNA, or a protein. TATTACGAGGCGAT CCCGAAUCGAUUG PTGACMFVLIDKRR Which of the sequences above contains letters that are abbreviations for: Amino acids? Ribonucleotides ? Deoxyribonucleotides ?. Classwork 2 /5. Predict.

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Neuron nudge 2 5
Neuron Nudge 2/5

  • Identify each sequence below as belonging to DNA, RNA, or a protein.

    • TATTACGAGGCGAT

    • CCCGAAUCGAUUG

    • PTGACMFVLIDKRR

  • Which of the sequences above contains letters that are abbreviations for:

    • Amino acids?

    • Ribonucleotides?

    • Deoxyribonucleotides?



Predict
Predict

  • Ribosomes are the site of protein synthesis, but they’re located outside of the nucleus.

    • What are the pros and cons of DNA traveling out of the nucleus to the ribosome?

    • What are the pros and cons of using a messenger molecule instead?


Observe
Observe

  • Video #4



Transcription overview
Transcription: Overview

  • Big idea: DNA  mRNA


Transcription and the gene
Transcription and the Gene

  • Only one gene at a time


Transcription steps
Transcription: Steps

  • Three steps

    • Initiation

    • Elongation

    • Termination


Transcription steps1
Transcription: Steps

  • Initiation

    • RNA polymerase binds to promoter region and unzips DNA


Transcription steps2
Transcription: Steps

  • Elongation

    • RNA polymerase reads the 3’-5’ DNA strand and creates a single-stranded mRNA in the 5’-3’ direction


Transcription steps3
Transcription: Steps

  • Termination

    • RNA polymerase reaches terminator region, at which time it releases the completed mRNAand the DNA (which reforms the double helix)



Enforce
Enforce

  • Practice Quiz: Transcription


Evaluate next steps
Evaluate (Next Steps)

  • Confident students:

    • How will you make sure you remember this content?

  • Confused or uncertain students:

    • What questions do you have?

    • How will you make sure you master this material before our next test or quiz?


Homework
Homework

  • Check DNA Replication answers (posted on classworkblog)

  • Create a transcription summary sheet OR flashcards OR study guide OR…


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