Zusammenfassung der Ressource
CELLS
- Prokaryotic
- lack membrane
enclosed nucleus
- bacteria
- can be divided into
- cell envelope
- includes
- plasma membrane
- can form
- mesosomes
- internal pouches
- increase
surface area for
the attachment
of enzymes
- phospholipid
bilayer with
embedded
proteins
- cell wall
- when present
- maintains the shape
- glycocalyx
- is a
- layer of
polysaccharides that
lies outside the cell wall
- when it is well
organized it is called a
- capsule
- when it is not well organized
- slime layer
- easily removed
- hard to remove
- cytoplasm
- semifluid solution
composed of water and
inorganic and organic
molecules encased by
a plasma membrane
- DNA
- is found in
- single coiled
chromosome
- located in
- nucleoid
- extrachromosomal
pieces of DNA
- are called
- plasmids
- which are used in
- biotechnology
- as a
- molecular vehicle
- also called a
- vector
- to
transport
DNA from
different
organisms
- are
synthesized
on
- ribosomes
- proteins
encoded
by the
bacterial
DNA
- they contain
- RNA and 2 subunits
- cyanobacteria
- are
- bacteria capable
of photosynthesis
- there cytoplasm contains
- intense internal membranes
- called
- thylakoids
- this is where
- chlorophyll and other
pigments absorb solar energy
for the production of
carbohydrates
- are called the
- blue-green bacteria
- appendages
- flagella,
fimbriae, and
conjugation
pili
- are made of
- protein
- flagella
- are
- motile bacteria
that can propel
themselves in
water by
appendages
- another appendage
- fimbriae
- are
- small
bristlelike
fibers that
sprout from
cell surface
- involved in locomotion
- conjugation pili
- are
- rigid tubular structures
used by bacteria to pass
DNA from cell to cell
- most abundant
- have an
- average size of
1.1um wide and
2-6 um long
- most common
shapes are
- bacillus
- are
- rod shaped
- coccus
- are
- spherical
- spirilla
- are
- spirals
- are made up of
- ribosome
- site of
protein
synthesis
- inclusion body
- stored nutrients
- mesosome
- plasma membrane that
folds into the cytoplasm and
increases surface area
- fimbriae
- hairlike bristles that allow
adhesion to the surface
- conjugation pilus
- elongated hollow appendage used for
DNA transfer to the other bacterial cells
- nucleoid
- location of the bacterial chromosome
- plasma membrane
- sheath around cytoplasm that
regulates entrance and exit
- cell wall
- covering that supports
shapes and protects cell
- glycocalyx
- gel like coating outside cell wall, if
compact- capsule, if diffuse- slime layer
- flagellum
- rotating filament that pushes the cell forward
- smallest
living unit
of matter
- eukaryotic
- origin
- endosymbiotic theory
- which explains
- why mitochondria and
chloroplast are bounded
together by a double
membrane and contain
their own genetic material
separate from the nucleus
- has nucleus
- that is
- essential to the
life of the cell
- contains
- genetic information
- nucleus contains
- chromatin
- in a matrix called
- nucleoplasm
- undergoes coiling
into rodlike structures
- called
- chromosomes
- carriers of genetic
information
- life is only possible because of
the constant input of energy
- by
- mitochondria and chloroplasts
- they
- specialize in converting
energy to a form that
can be used by the cell
- in cellular respiration
- mitochondria break down
carbohydrate-derived
products to produce ATP
- chloroplast
- is a
- plastid
- are plant organelles that
are surrounded by a
double membrane and
have varied functions
- chromoplasts
- are responsible
for the color of
autumn leaves,
fruits, carrots
- leucoplasts
- colorless plastids
that synthesize
and store
starches and oils
- compartments of cells are called
- organelles
- carry out specialized
functions that together allow
the cell to be more efficient
- materials are transported by
- vesicles
- move through the
- cytoskeleton
- the protein fibers
serve as a tracks for
transport vesicles
- protein sequence of events is
dogma of molecular biology
- vesicles travling
- may return to ER or plasma
membrane where they
discharge their contents to
the outside of the cell
- during
- secretion
- is termed
- exocytosis because the
substance exits cytoplasm
- lysosomes (stomach)
- are
- membrane bonded
vesicles produced by
the Golgi apparatus
- have a
- low PH level and store
powerful hydrolytic digestive
enzymes in an inactive state
- white blood cells have a greater
proportion of lysosomes than
other cells because of their
specialized function is digestion
of foreign bodies
- can cause
- nerve cells to die off
- tay-sachs disease
- similar to is a
- peroxisomes
- are
- metabolic assistants
- can cause
- neurological damage
- adrenoleukodystrophy
- larger than vesicles are
- vacuoles
- membranous sacs
- rids cell of access water
- stores substances
- essential to plant fuction
- control vacuole
- maintains
hydrostatic/turgor
pressure in plants
- which
- provides structural support
- organelles that make up eukaryotic cells
- plasma membrane
- outer surface that regulates entrance and exit of molecules
- cytoskeleton
- maintains cell shape and assists in movement of cell parts
- microtubules
- protein cylinders that move organelles
- intermediate filaments
- protein fibers that provide stability of shape
- actin filamen
- protein fibers that play a role in cell division and shape
- centrioles
- short cylinders of microtubules
- centrosome
- microtubule organizing center that contains a pair of centrioles
- lysosome
- vesicle that digests macromolecules and cell parts
- vesicle
- small membrane bounded sacs that stores and transports substances
- cytoplasm
- semifluid matrix outside nucleus that contains organells
- nucleus
- command center of cell
- chromatin
- diffuse threads containing DNA and protein
- nucleolus
- region that produces and subunits of ribosomes
- endoplasmic reticulum
- protein and lipid metabolism
- rough ER
- studded with ribosomes, synthesizes lipid molecules, forms glycoproteins
- smooth ER
- lacks ribosomes, synthesizes lipid molecules, helps produce more lipids
- peroxisome
- vesicle that is involved in fatty acid metabolism
- ribosomes
- particles that carry our protein synthesis
- polyribosome
- strings of ribosomes simultaneously synthesizing same protiens
- mitochondrion
- carries out cellular respiration producing ATP
- Golgi apparatus
- processes, packages, and secretes modified proteins
- in plants
- nuclear pore
- permits passage of proteins into the nucleus and ribosomal
subunits out of nucleus (gate keeper)
- centrosome
- microtubule organizing center(lacks centrioles
- central vacuole
- large fluid filled sac that stores metabolites and helps maintain turgor pressure
- middle lamella
- cements together the primary cell walls of adjacent plant cells
- chloroplast
- carries out photosynthesis producing sugars
- granum
- stack of chlorophyll containing thylakoids in a chloroplast
- microtubules
- protein cylinders that aid movement of organelles
- plasma membrane
- surrounds cytoplasm and regulates entrance and exit
- cell wall
- outer surface that shapes supports and protects cell
- 20nm by30 nm
- helps detoxify drugs
- 5um
- produced by the Golgi apparatus
- archeans
- possess both qualities