How Genes Function Quiz 6D. Four main points of how genes function Nucleotides (symbols in the...
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Transcript of How Genes Function Quiz 6D. Four main points of how genes function Nucleotides (symbols in the...
![Page 1: How Genes Function Quiz 6D. Four main points of how genes function Nucleotides (symbols in the language) are arranged into codons (letters) Codons (letters.](https://reader036.fdocuments.net/reader036/viewer/2022062322/5697bfd21a28abf838cabedd/html5/thumbnails/1.jpg)
How Genes Function
Quiz 6D
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Four main points of how genes function
• Nucleotides (symbols in the language) are arranged into codons (letters)• Codons (letters in the language are
arranged into genes (words)• Genes (words in the language) are the
instructions for making proteins• During reproduction a complete copy is
made of all genes and is given to each new organism
![Page 3: How Genes Function Quiz 6D. Four main points of how genes function Nucleotides (symbols in the language) are arranged into codons (letters) Codons (letters.](https://reader036.fdocuments.net/reader036/viewer/2022062322/5697bfd21a28abf838cabedd/html5/thumbnails/3.jpg)
An organism's ability to manufacture proteins enables it
to carry on its life processes.
Since what a cell can or cannot do depends upon enzymes, cells are controlled by enzymes, which are
proteins.
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protein
a substance made of long chains of amino acids
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enzymes
the organic catalysts that control chemical reactions in
living things
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DNA
Rosalind Franklin
Crick
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DNA is Coded Messages •DNA - Deoxyribonucleic acid•1953 James d. Watson and Francis H.C. Crick - model for the structure of DNA
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DNA looks like a twisted ladder
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DNA is made up of nucleotides
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Nucleotide:the basic
structured unit of
DNA and RNA
• Sugar• Phosphate• base
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nucleotide - the basic structured unit of
DNA and RNA
• Sugar (deoxyribose) & Phosphate form the sides of the ladder
• Bases form the rungs
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DNA nucleotide bases
• adenine
• thymine
• guanine
• cytosine
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how bases pair up
A – T
C - G
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genes are sections of DNA
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replication - the process of
forming 2 DNA molecules from 1 original DNA
molecule
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RNA- ribonucleic acid
• messenger RNA (m-RNA): the RNA molecule that transports a coded message from the nucleus to the cytoplasm
• transfer RNA (t-RNA): the RNA molecule that transfers amino acids to the messenger RNA
• Ribosomal RNA (r-RNA) makes up ribosomes (decoder)
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How does RNA differ from DNA?
• RNA has a single chain of nucleotides
• base thymine is replaced by Uracil
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How does RNA differ from DNA?
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RNA nucleotide bases
• adenine
• uracil
• guanine
• cytosine
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How is RNA made?
transcription- the process of forming
messenger RNA from DNA
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Transcription
![Page 27: How Genes Function Quiz 6D. Four main points of how genes function Nucleotides (symbols in the language) are arranged into codons (letters) Codons (letters.](https://reader036.fdocuments.net/reader036/viewer/2022062322/5697bfd21a28abf838cabedd/html5/thumbnails/27.jpg)
Protein Synthesis
• takes place in the ribosome• protein synthesis- the manufacturing
of protein inside a cell• messenger RNA (m-RNA): the RNA
molecule that transports a coded message from the nucleus to the cytoplasm.
• transfer RNA (t-RNA): the RNA molecule that transfers amino acids to the messenger RNA
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