Organelles Flashcards
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2026
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, DAT Bootcamp - Cells and Organelles
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Terms in this set (240)
what are the 3 main things in a cell membrane? phospholipids; cholesterol; proteins
what are the 2 types of membrane proteins? integral; peripheral
_____ membranes are embedded in the core of the plasma integral
membrane
many integral proteins are _____ proteins, meaning they transmembrane
extend all the way through the membrane
transmembrane proteins are _____ amphipathic
integral/transmembrane proteins may function in cell _____, signaling; large, polar (hydrophilic)
but most tend to transport _____ molecules across the cell
membrane
_____ membrane proteins do not extend through the entire peripheral
bilayer
_____ membrane proteins may or may not be amphipathic peripheral
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, what are 3 common types of peripheral membrane receptors; adhesion proteins; recognition proteins
proteins?
_____ (peripheral) receive chemical signals from the receptor proteins
extracellular environment
_____ (peripheral) attach adjacent cells, and also act as adhesion proteins
anchors for the cytoskeleton
_____ (peripheral) give cells a way to identify each other recognition proteins
when they come in contact
recognition proteins are also known as _____ glycoproteins
what is a common example of a recognition peripheral major-histocompatibility complexes (MHC molecules)
protein?
cell membranes follow a _____ model fluid-mosaic
what are the 3 main factors that affect membrane fluidity? temperature; cholesterol; the degree of phospholipid tail unsaturation
cells would _____ if they were completely isolated from the die
outside
_____ particles can travel directly across the phospholipid small, uncharged, non-polar (hydrophobic)
bilayer via simple diffusion
simple diffusion is the flow of substances _____ their down; non-energy
concentration gradient in a _____ consuming process
_____ does not utilize proteins to help particles across the simple diffusion
membrane
osmosis is a type of _____ simple diffusion
_____ molecules cannot travel directly across the bilayer large, hydrophilic
_____ describes how large, hydrophilic molecules travel facilitated transport
across the bilayer by transmembrane proteins
what are the three main types of facilitated transport uniport; synport; antiport
(direction)?
2026