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bio 120 midterm > lecture 8 > Flashcards

lecture 8 Flashcards

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Biology 101 flashcards
1
Q

what is a membrane protein

A

proteins associated with membrane

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2
Q

what are the functions of the membrane protein

A

transport
enzymatic activity
signal transduction
attachment and recognition

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3
Q

what are enzymatic activity

A

number of enzymes are membrane proteins

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4
Q

what are signal transduction

A

receptor proteins bind to outside chemical and triggers change inside leading to transduction

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5
Q

what are attachments and recognition

A

proteins act as attachment points for range of cytoskeleton

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6
Q

what is transport

A

protein provide channel allowing movement of specific molecules

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7
Q

what are integral membrane protein

A

protein embedded phospholipid bilayer

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8
Q

what are transmembrane proteins

A

proteins that transverse entire lipid bilayer at once

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9
Q

what is passive transport

A

movement of molecules across membrane without ATP

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10
Q

what is simple diffusion

A

movement of molecule directly across membrane without transporter

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11
Q

what is facilitated diffusion

A

diffusion of molecules across membrane through transporter

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12
Q

what are channel proteins

A

hydrophilic pathways in membrane through molecules pass through

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13
Q

aquaporin

A

transport of water cell

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14
Q

what is a gated channel

A

channel protein found in eukaryotes

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15
Q

what are carrier proteins

A

control muscle contractions

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16
Q

what is uniport transport

A

transport solutes across lipid bilayer

17
Q

what is hypotonic

A

solution surrounding cell contains dissolved substance at lower then cell concentration

18
Q

what is hypertonic

A

solution surrounding cell contain higher concentration in cell than out

19
Q

what is active transport

A

transport of molecules across membrane that requires ATP

20
Q

3 function of active transport

A

-maintain contrast concentration
-removal of waste
-uptake of nutrients

21
Q

what is membrane potential

A

ion charge

22
Q

what is primary active transport

A

proteins that transport molecules directly powered by ATP

23
Q

what is secondary active transport

A

transport indirectly driven by ATP

bio 120 midterm (10 decks)

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