Chapter 5 Flashcards
Direct beam electrons across surface of specimen coated with metal
scanning electron microscope
Dense mesh of fibrous proteins that supports inner surface of membrane
nuclear lamina
organelle develops from centriole
basal body
Mesh of cytoskeletal elemtsn under a plasma membrane
cell cortex
short, movable structure that projects from plasma membrane of some eukaryotic cells
Cilia
are cilia in pros
no
Peroxisomes
enzymes, breaks down aa, fa, and toxic substances
What does fluids mosaic model
cell membrane
FM in what dimension
two
Material that stregthens cell walls of vascular plants
lignin
Intermediate filament
supports CM and tissues
Microfilament
fiber of actin subunits
reinforces cell membrane
Muscle contractions
Complex mixture of cell secretions
ECM
Structure connects cell to another cell or to ECM
cell junction
In the slim
Biofilm
Motor protein that interacts with microtubules to cause flagella and cilia in elks to move
dynein
fibrous protein makes up type of intermediate filaments which form nuclear lamina
lamin
Cell junction composed of adhesion proteins that connect to cytoskeletal elements. Fastens cell to each other/to basement membrane
Adhering junction
Network of interconnected protein filaments that supports, organize, and move eukaryote cells and their parts
Cytoskleeton
Do pros have cytoskeleton
no
Protein filament that projects from surface of some pros
pilis
Motor protein that interacts with microfilaments to cause muscle cell contraction
myosin
Basement membrane
ECM secreted by animal cells, not cell membrane, sheet of fibrous materials that organizes tissues
Who was basement membrane?
animal cells
Arrays of adhesion proteins join epithelial cells and collectively stop leakage
tight junctions
Semifuluid interior of chloroplasts that contains enzymes and chloroplast’s own DNA
stroma
Does cell wall have pores?
Yes
What is cell wall in?
fungi, some protists, plant cells
what has two lipid bilayers?
envelope
Must be pores in membrane for…
nuclei
is cell wall permeable
yes
fluid-filled organelle; isolates/disposes of waste, debris, toxic materials
vacuole
Golgi, er , etc.
endomembrane system
EM system place
between nucleus and plasma membrane
sER makes
lipids/breaks down carbs and fa
rER
synthesize proteins
What grows from centriole
microtubules
Whatintermediate filaments in hair
keratin
Globular protein; makes up microfilaments
actin
Microtuble
involved in movement
is microtubule hollow
yes
one-thousandth of a millimeter
micrometer
All cells have
cell membrane, cytoplasm, control center, organelles
do pros have phos bilayer besides cell membrane?
No
Size pros
1 to 2 mm
eukaryote size
10 to 20 mm
compound light microscope pro/con
Pro: see living things
Con: limited power
Polarized
3D edge effect
Transmission power
200,000
slice?
Transmission