Biology 1002B Lecture Notes - Lecture 13: Release Factor, Stop Codon

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beigereindeer807

13 Mar 2012

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Chloroplast genomes is expressed in the typically prokaryotic environment inside the organelle. There are genes that are transcribed and translated inside the mitochondria and chloroplast of elysia three different kinds of genomes inside the same cell trna base pairs with itself as well. Mrna can pair with itself, and thus, has a great deal of secondary structure that contains information. Secondary structure of mrna can influence its subsequent translation. Ribosomal rna base pairs with itself and is catalytic. Protein (e. g. dna polymerase) end product of gene expression. Polymerase transcribes the terminator, the information/sequence is in the dna but it doesn"t make sense to the cell until after transcription. Formation of secondary structure in mrna knocks the polymerase off the gene this is one way that prokaryotes stop transcription. Translation initiation is stabilized by mrna/rrna base pairing. Ribosomal rna is complementary to a region of the mrna helps get the ribosomes docked properly for translation.

Related Questions

Indicate whether eac is true for gene expression in prokaryotes,eukaryotes or both:

1. After transcription, a 3' poly- A tail and a 5' cap areaddeddto the RNA.

2. Translation of mRNA can begin before transcription iscomplete.

3. RNA polymerase binds to the promoter region to begintranscription

4. RNA polymerase can only add a robonucleotide to the 3' end ofthe growing RNA

5. The mRNA transcript is the exact complement of the gene fromwhich it was copied.

lemonyak277

Indicate whether eac is true for gene expression in prokaryotes,eukaryotes or both:

1. After transcription, a 3' poly- A tail and a 5' cap areaddeddto the RNA.

2. Translation of mRNA can begin before transcription iscomplete.

3. RNA polymerase binds to the promoter region to begintranscription

4. RNA polymerase can only add a robonucleotide to the 3' end ofthe growing RNA

5. The mRNA transcript is the exact complement of the gene fromwhich it was copied.

coralfox406

Fill in the blank:

promotor, induction, presence, will not, will, operon, repressor, repression, overabundance, operator, control region,

1. If the repressor is bound to the operator, then RNA polymerase______ transcribe the structural genes.

2. The ________ controls whether RNA polymerase can advance along the DNA strand or not.

3. The _______ operates differently depending on whether the operon is inducible or repressible.

4. An _________ controls the expression of functionally related genes and consists of a control region and structural genes.

5. ______ decreases expression of the structural genes. This typically occurs in response to an _____ of a substrate.

6. The _____ contains a promoter and an operator.

7. If the repressor is not bound to the operator, then RNA polymerase _____ transcribe the structural genes.

8. ______ increases expression of the structural genes. This typically occurs in response to the _______ of a substrate.

9. The ______ is the region of DNA where RNA polymerase initially binds.

Biology 1002B Lecture Notes - Lecture 13: Release Factor, Stop Codon

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