RNA carries DNA’s instructions.

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RNA carries DNA’s instructions.
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RNA carries DNA’s instructions.
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RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
___ carries _____ ____________.
Remember DNA = genetic information
RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
RNA is a nucleic acid made of linked nucleotides.
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RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
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RNA is a nucleic acid made of linked nucleotides.
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RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
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RNA carries DNA’s instructions.
RNA carries DNA’s instructions.
Presentation transcript:

KEY CONCEPT Transcription converts a gene into a single-stranded RNA molecule.

RNA carries DNA’s instructions. The central dogma states that information flows in one direction from DNA to RNA to proteins.

The central dogma includes three processes. Replication Transcription Translation replication transcription translation RNA is a link between DNA and proteins.

RNA differs from DNA in three major ways. RNA has a ribose sugar. RNA has uracil instead of thymine. RNA is a single-stranded structure.

Transcription makes three types of RNA. Transcription copies DNA to make a strand of RNA.

Transcription is catalyzed by RNA polymerase. RNA polymerase and other proteins form a transcription complex. The transcription complex recognizes the start of a gene and unwinds a segment of it. start site nucleotides transcription complex

RNA polymerase moves along the DNA Nucleotides pair with one strand of the DNA. RNA polymerase bonds the nucleotides together. The DNA helix winds again as the gene is transcribed. DNA RNA polymerase moves along the DNA

The RNA strand detaches from the DNA once the gene is transcribed.

Transcription makes three types of RNA. Messenger RNA (mRNA) carries the message that will be translated to form a protein. Ribosomal RNA (rRNA) forms part of ribosomes where proteins are made. Transfer RNA (tRNA) brings amino acids from the cytoplasm to a ribosome.

The transcription process is similar to replication. Transcription and replication both involve complex enzymes and complementary base pairing. The two processes have different end results. Replication copies all the DNA; transcription copies a gene. Replication makes one copy; transcription can make many copies. growing RNA strands DNA one gene