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plasma membrane (cell membrane)
maintains the wholeness of the cell and controls everything that goes in and out of the cell
Selective Permeable
(type of plasma membrane) membrane that only allows select substances to enter the cell while keeping others out
Permeable
(type of plasma membrane) allow free passage of all substances into the cell
a. bilayer of phospholipids with proteins on its surface or embedded in the membrane
b. transport proteins - serve as channels for substances to enter the cell
c. “Fluid masaic model” fluid because the membrane is flexible and mosaic because of its patterns
structure of the plasma membrane
Nucleus
considered the control center of the cell
chromatin
located inside the nucleus - strands of the genetic material, DNA, transforms into chromosomes
Nucleolus
located inside the nucleus. this synthesis ribosomes
Nuclear Envelope
controls everything that goes in and out of the nucleus
Centrole Centersomes
equally divide genetic information during mitosis
ribosomes
assembles enzymes and proteins
cytoplasm
clear, gelatinous fluid inside the cell
endoplasmic reticulum
forms a transport system between the nucleus and the cytoplasm. two types of ER - rough and smooth
Golgi apparatus
(golgi body, golgi complex) packages protein molecules for secretion
vacuoles
“vesticles” are formed by the process of endocytosis. store materials that have recently entered the cell
lysosomes
are vacuoles that contain digestive enzymes - digest excess or worn out organelles
mitochondria
transform food molecules into a usable energy (ATP) powerhouse of the cell
cytoskeleton
gives the cell support and provides a framework to aide in inner movements
Microtubules
thin, hollow cylinders made of protein fibers
microfilaments
think, solid protein fibers
cilia
hairlike projections that move in a wavelike motion
fagella
whiplike structure that aids in movement