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Freshman Bio Test 5 Pt. 2
N/A
18
Biology
Undergraduate 1
11/20/2008

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Cards

Term
What are the functions of genes?
Definition
DNA in Genes specify information, but not structure or function
Term
Who came up with the one gene one enzyme hypothesis?
Definition
Beadle and Tatum
Term
Who came up with the one gene one polypeptide hypothesis?
Definition
Pauling and Itano
Term
What is the central Dogma
Definition
DNA -> RNA -> Protein
Term
What are the types of RNA and their functions?
Definition
mRNA - takes genetic message from DNA in nucleus to ribosomes in cytoplasm
rRNA - Makes up Ribosomes that read mRNA
tRNA - transfers aminoacids to the ribosomes
Term
What is the structure of RNA
Definition
it has a ribose sugar and RNA nucleotides: Adenine, Guanine, Cytosine, and Uracil
Term
What is the definition of Gene expression?
Definition
Production of Protein from DNA
Term
Genetic Code
Definition
The 3 nucleotide segments that translate into proteins
Term
What is Transcription?
Definition
The process of mRNA being created from a seperated strand of DNA.
Term
What is the role of RNA polymerase?
Definition
It connects the loose mRNA nucleotides together.
Term
Exon
Definition
Code for protein
Term
Intron
Definition
These do not code for proteins, however, they are used to made the genetic code more complex.
Term
What are the cap and tail of a completed RNA?
Definition
Cap - Guinine
Tail - poly-adenine
Term
What is a virus?
Definition
An obligate intracellular paracite. It is smaller that bacteria and noncellular
Term
What is a virus made up of?
Definition
The Capsid (shell) and the Nucleic acid core (DNA or RNA)
Term
Who first discovered viruses?
Definition
Louis Pasture
Term
Can a virus reproduce without a cellular host?
Definition
No
Term
What are some common diseases caused by viruses?
Definition
The common cold, Polio, and chicken Pox
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