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Cell Bio 1
vocab words from chapter one
30
Biology
Undergraduate 2
08/24/2010

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Term
procaryote (prokaryote)
Definition
group of living cells that don't have a nucleus.
two examples of archaea and eubacteria domains
Term
eucaryote (eukaryote)
Definition
living organism with one or more cell.
these cells have a definite nucleus and cytoplasm
Term
Archaea
Definition
procaryote, found in extreme environments like hot springs
Term
Eubacteria
Definition
common bacteria with ridged cell walls
Term
cell
Definition
the basic units that from living things.
have a membrane with an aqueous solution inside.
must originate from existing cells
Term
cell membrane
Definition
separates the interior of a cell from the exterior
Term
cell wall
Definition
is outside the cell membrane in some cells, provides support and protection for the cell
Term
DNA
Definition
double stranded polynucleotide that contains genetic instructions
Term
organelle
Definition
a structure in a eukaryotic cell which carries out a specific job for the cell
Term
mitochondria
Definition
carries out oxidative phosphorylation and produces the majority of ATP in eukaryotic cells, has a membrane
Term
nucleus
Definition
main organelle of the cell, contains DNA organized into chromosomes, directs the cell
Term
Endoplasmic reticulum
Definition
organelle where lipids and proteins are synthesized
Term
RNA
Definition
single stranded polynucleotide, transcribed from DNA
Term
ribosome
Definition
made of ribosomal RNA's and proteins, works with messenger RNA, and catalyzes the making of protein
Term
chloroplast
Definition
organelle in algae and plants that has cholorphyll and is where photosynthesis takes place
Term
cytoplasm
Definition
contents of a cell is inside the cell's membrane but, in a eukaryotic cell, outside the nucleus
Term
characteristics of all living organisms
Definition
one or more cells, metabolism, respond to stimuli in the external environment, growth, ability to reproduce, adaptation to the environment occurs by evolution, the environment influences a living thing
Term
protein
Definition
macromolecule made up of amino acids linked by peptide bonds in a specific sequence, amino acids fold into a shape special to that protein, the shape determines the function of the protein
Term
Golgi Apparatus
Definition
organelle in eukaryotic cells with membrane, where proteins and lipids are modified and sorted for transport
Term
endosymbiont theory
Definition
the theory that mitochondria and plastids originated from separate prokaryotic organisms that were taken by the cell to live inside it
Term
endocytosis (compared to exocytosis)
Definition
uptake of material into the cell in a vesicle, compared to output of material from the cell
Term
genome
Definition
the total make up of genetic information carried by a cell
Term
gene
Definition
part of DNA that controls a hereditary characteristic
Term
nucleotide
Definition
made of a nitrogenous base, a five-carbon sugar phosphate group(s). also, they are molecules that make up DNA and RNA
Term
guanine (G)
Definition
a base found in RNA and DNA bonds with cytosine
Term
cytosine (C)
Definition
base found in DNA are RNA, pairs with guanine
Term
enzyme
Definition
is a protein lowers activation energy to catalyze or increase the rate of a reaction
Term
genus
Definition
the second lowest taxonomic rank, above species and below family
Term
species
Definition
the lowest taxonomic rank, can breed and produce fertile offspring, have very similar DNA
Term
transmembrane protein
Definition
protein that is exposed on the inside and outside of the cell
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