Cell review Flashcards
Prokaryote cells include
bacteria and archaea
what do prokaryotes lack that eukaryotes have
a membrane bound nucleus
the prokaryotic cell wall is primarily composed of
peptidoglycan
biological membranes are
thin, flexible, and stable sheet-like structures that have selective permeability
the phospholipid bilayer has these proteins
integral and peripheral
centrally located and contains the circular chromosome
nucleoid
large granules that contain organic or inorganic compounds
inclusion bodies
three things about plasmids
replicate independently of chromosomes
carry genes that benefit the bacterium
are used in molecular cloning
for attachment and conjugation
pili
are used for locomotion in prokaryotes
flagella
eukaryotic cells have
membrane bound organelles that increase surface area for chemical reactions
isolates the cell and is selectively permeable
plasma membrane
outside the plasma membrane are the
glycocalyx and extracellular matrix
a series of membranous tubules, vesicles, and flattened sacks that function for protein synthesis, folding, and glycsylation
rough endoplasmic reticulum
RNA/protein complexes involved in protein biosynthesis with two functional subunits
ribosomes
formed of large flattened sac-like membranous vesicles that processes, packages, and distributes cell products
golgi apparatus
contains the DNA and is the site of transcription
nucleus
surrounds the nucleoplam
nuclear envelope
nuclear envelope contains these through which most of the molecules that enter and leave the nucleus
nuclear pores
vesicles that contain digestive enzymes (acid hydrolases) and degrades debris involved in autophagy
lysosomes
four characteristics of mitochondria
are site of aerobic metabolism
principle source of cellular ATP
have inner and outer membrane surrounding matrix
contain their own DNA ad ribosomes
small organelle containing oxidative enzymes for detoxifies peroxides
peroxisomes
organelles found only in plants, algae, and some protists
plastids
two types of plastids
leucoplasts and chromoplasts
specialized chromoplasts in photosynthesis
chloroplasts
an intricate supportive network of fibers, filaments, and associated proteins
cytoskeleton
three main components of cytoskeleton
microtubules
microfilaments
intermediate filaments
microtubules contain
tubulin and proteins -kinesin and dynein
microfilaments contain
actin and proteins- myosin, troponin, tropomodulin, actinin
examples of intermediate filaments
keratin and cytokeratin