selectively permeable and goal is to maintain a stable environment within the cell. Formation of electro-chemical gradients across membrane provides energy
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Internal membrane
creates sub environments with diff chemical compositions; additional surface area for membrane bound activities; package things for transport within, btwn compartments, and even outside/inside cell
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Motor proteins
proteins that give an indirectional push to their cargo. Two kinds: kinesins & dyneins
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Microtubules
the "roads" on the cytoskeleton that are used by motor proteins to transport cargo. Larger than actin filaments
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Microfilaments
smaller tubes than microtubules and act like alleyways. Made of actin filaments
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Vesicle membrane sugars & proteins
allow motor protein to recognize its cargo; letting two membranes to recognize each other and fuse; regulating fusion
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Myosin
motor protein that support cell shape, motility and intracellular transport. Interacts with actin filaments by crosslinking them which prevents actin from sliding but can also move them around through ATP hydrolysis. Binds to other myosin
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Myosin V
has 2 heads, doesn't bind with other myosins so it carries other cargo (on microfilaments)
Studied by 1 person
