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BioTechnology 125
Terms from
7
Biology
Undergraduate 1
09/01/2008

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Term
Function of a gene
Definition
...to produce a protein.

p.43
Term
Where does "translation" (protein synthesis) occur?
Definition
cytoplasm of cells

p.43
Term
What are the 3 types of RNA? What do they do?
Definition
Messenger RNA (mRNA) - exact copy of a gene. Carries genetic code, encoded on DNA, from nucleus to cytoplasm where info read by protein. ca. 1,000 nucleotides

Ribosomal RNA (rRNA)- components of ribosomes by which bind mRNA and "read" them. ca.1,500-4,700 nucleotides

Transfer RNA (tRNA) - molecules that transport amino acids to ribosome during protein synthesis. ca. 75-90 nucleoties
Term
Ribosomes
Definition
...organelles that are essential for protein synthesis during which they "read"the code and produce proteins.

p.43
Term
How are proteins formed?
Definition
the joining of amino acids

p.43
Term
Polypeptide
Definition
a chain of amino acids linked together by covalent bonds
Term
How many combos of amino acids can a protein have?
Definition
20
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