Slide Exam 1 Flashcards
(216 cards)
what structure is this?
cell membrane
what structure is this?
cell membrane
cell membrane
electron-lucent layer b/w 2 electron-dense layers
what structure is this?
nuclear pores
nuclear pore
inner & outer membrane separated by perinuclear cisterna; channels surrounded by ring of nucleoporin proteins
what structure is this?
lampbrush chromosomes
lampbrush chromosomes
unraveled portions of chromosomes as active euchromatin
what structure is this?
ribosomes
ribosomes
found free in cytoplasm, attached to rER and attached to outer nuclear membrane; often group together as polyribosomes; two subunits w/ rRNA
what structure is this?
mitochondria
mitochondria
inner & outer membrane; cristae filled w/ matrix; dense granules; oblaong to oval in shape; present in all cells except RBCs & keratinocytes
what structure is this?
rough endoplasmic reticulum
endoplasmic reticulum
series of membranous sheets & tubules throughout cytoplasm; smooth or rough; coated vesicles bud off of ER
what structure is this?
golgi apparatus
golgi apparatus
complex of flattened, stacked membrane-bound cisternae; convex face=cis Golgi network=forming face (vesicles arrive); concave face=trans Golgi network=maturing face (vesicles leave)
what structure is this?
melanin intracytoplasmic pigment
melanin intracytoplasmic pigment
black, brown & granular; produced by melanocytes & transported to other cells
what structure is this?
lipofuscin intracytoplasmic pigment
lipofuscin intracytoplasmic pigment
gold, brown & granular; frequently seen in neurons; “old age” pigment
what phase is this?
prophase
prophase
visible, condensed chromosomes; nuclear membrane & nucleoli disappear; cytoskeleton microfilaments & microtubules disaggregate; centrioles migrate to poles of cell to form spindle apparatus
what phase is this?
metaphase
metaphase
chromosomes lined up on equator at metaphase plate
what phase is this?
anaphase