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  • Created by: caprice
  • Created on: 25-09-13 12:46
define diffusion
diffusion is the free movement of particles in a liquid or a gas down a concentration gradient. from high to lo concentration.
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define concentration gradient
The difference in concentration of a solute per unit distance through a solution.
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define hydrogen bond
the negative atom of a molecule will attract a positive atom in a weak electrostatic attraction
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define buffer
the process which allows molecules to keep a neutral PH
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define amphoteric
a molecule can be a acid and a base
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name of base T
Tymine
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name of base A
adenine
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name of base G
Guanine
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name of base C
Cystosine
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name of base U
Uracil
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define nucleotide
any of a group of molecules that, when linked together, form the building blocks of DNA or RNA: containing pentose sugar, a phosphate group and a nitrogenous base.
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define DNA
deoxyribonucleic acid
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define mRNA
messenger ribonucleic acid
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define gamete
a mature sexual reproductive cell
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define gene
a small section of DNA that carries the code for a particular characteristic
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heterzygous
having dissimilar pairs of genes for any hereditary characteristic.
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homozygous
having identical pairs of genes for any given pair of hereditary characteristics.
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alleles
any of several forms of a gene
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pentose sugar
a 5 carbon sugar
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nitrogenous base
a nitrogen-containing organic compound that has the chemical properties of a base, especially a pyrimidine or purine:
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phosphate group
they link the sugar on the nucleotide onto the phosphate of the next nucletide
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polypeptides
a chain of amino acids linked together by peptide bonds and having a molecular weight of up to about 10,000.
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intercellular
inside the cell
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extracellular
outside the cell
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translation
In molecular biology and genetics, translation is the process in which cellular ribosomes create proteins
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transcription
Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA by the enzyme, RNA polymerase
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phenotype
the appearance of an organism resulting from the interaction of the genotype and the environment.
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geneotype
the sum total of genes transmitted from parent to offspring
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Other cards in this set

Card 2

Front

The difference in concentration of a solute per unit distance through a solution.

Back

define concentration gradient

Card 3

Front

the negative atom of a molecule will attract a positive atom in a weak electrostatic attraction

Back

Preview of the back of card 3

Card 4

Front

the process which allows molecules to keep a neutral PH

Back

Preview of the back of card 4

Card 5

Front

a molecule can be a acid and a base

Back

Preview of the back of card 5
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