Cells Flashcards
All cells have:
proteins
lipids
carbohydrates
plasma membrane
flagella
long filaments that rotate to propel cell
fimbriae
needle like projections that promote attachment to other cells or surfaces
Endosymbiosis theory
mitochondria and chloroplast were once free-living bacteria engulfed by ancestor of modern eukaryotes but were not destroyed instead mutually beneficial relationship evolved
Because both:
Mitochondria have their own mitochondrial DNA (mtDNA)
Grow and divide independently of cell division
Manufacture their own ribosomes
Unique plant structures
central vacuole
chloroplast
cell wall
Nucleus
large, highly organized membrane bound compartment
stores decodes and processes DNA
Nucleolus
where ribosomal RNA is synthesized and ribosome subunits are assembled
nuclear envelope
double membrane surrounding and protecting nucleus
fibrous proteins
ribosomes
manufacture proteins
Endoplasmic Reticulum (ER)
enclosed factory continuous with the nuclear envelope
Rough (RER)
studded with ribosomes
synthesizes, folds, processes proteins
Smooth (SER)
contains enzymes to catalyze reactions involving lipids
synthesize lipids
poison detoxification
calcium ion storage
Golgi apparatus
where proteins go after ER
processes, sorts, and ships RER proteins
Cis side receives
Trans side ships
protein modification and sorting
Lysosomes
recycling center
enzymes
macromolecule digestion
autophagy
Peroxisome
center of reduction oxidation reactions