Term
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Definition
| the reactions of anabolism and catabolism together. |
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Term
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Definition
| larger molecules are constructed from smaller ones, a process requiring the input of energy |
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Term
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Definition
| larger molecules are broken down, releasing energy |
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Term
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Definition
- proteins
- make reactions possible by lowering the amount of energy needed to start the reaction (activation energy)
-speed up metabolic reactions
– act as catalyst |
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Term
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Definition
| Segments of genetic code with the information for making a single protein |
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Term
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Definition
| When a cell divides, each new cell needs a copy of the DNA |
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Term
Steps in Protein Synthesis
(2) |
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Definition
1: Transcription
2: Translation |
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Term
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Definition
-Takes place: In the nucleus of a cell
-The genetic code of DNA is copied into the language of RNA. This copy is called Messenger RNA (mRNA).
-The mRNA is single-stranded & contains DNA’s instructions for building a protein. |
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Term
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Definition
-Takes place: Ribosome in the cytoplasm
- Triplets of bases (codons) on the mRNA strand are translated as the ribosome moves down the strand. -As the mRNA is translated, transfer RNA (tNRA) brings in the correct amino acids & an enzyme links them to form a new protein. |
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