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BioTech2

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Updated 2007-03-20 19:43

Summary

Bio Tech Exam 2

Genetic Terms

TermDefinition
cell cycle orderly sequence of events in which cellular components are duplicated and divided in two
sister chromatidsreplicated chromosomes
daughter chromosomessplit sister chromatids
DNA SynthesisTemplate, Primer, dNTPs, enzyme
Human Somatic Cells46 Chromosomes (Diploid)
Germ Cells23 Chromosomes (Haploid)
Homozygousa pair of alleles which are identical
Heterozygousa single pair of alleles which are unlike each other.
Gene Locusthe location for a specific gene on a specific type of chromosome.
Pair of AllelesDifferent Genetic Codes (same/diff eye color)
Centromerewhere the chromosomes connect
Pair of genessame thing as three pairs of alleles
DominantThe one that prevails (Allele code that wins)
RecessiveGene Allele not expressed if hetero state
Genotypeinformation (in DNA)
Phenotypeappearance (what you see)
Gametegerm cell
Punnett Squaresrespresent crosses
N-Glycosidicbond between the sugar and the base
Phosphodiesterbond between the Phosphate and the Sugar
Hydrogenbond type between the two bases.
memorize

Stages of Mitosis

StageEvent
Prophasechromosomes condense and mitotic spindle assembles
Prometaphasenuclear envelope breaks down and spindle contacts chromosomes
Metaphasechromosomes line up in the center (equator)
Anaphasechromosomes split apart
Telophasenuclear envelope reassembles around separated chromosomes creating two nuclei
memorize

Bases

BaseType
AdeninePurines (Big)
GuaninePurines (Big)
ThyminePyrimidines (Small)
CytosinePyrimidines (Small)
UracilPyrimidines (Small only RNA)
memorize

DNA Synthesis Terms

TermDefinition
Building Blocks of DNANucleotides (dATP, dTTP, dCTP, dGTP)
DNA Helicaseseperates DNA
Nucleaseremoves nucleutids
Polymerasefills the gaps
LigaseSeals the Gap
memorize

RNA Types

TypeFunction
mRNAscodes for proteins
rRNAspart of the ribosome, site of protein synthesis
tRNAscarries amino acids to the ribosome
memorize

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