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Biology 120 Notes (Part 9) Phospholipids, Plasma Membrane, Diffusion, and Osmosis
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Biochemistry
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1
Phagocytosis
________ describes how the plasma membrane engulfs a smaller cell or food particle.
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2
Carbohydrate chains
________ are attached to proteins or phospholipids, and they function as cellular "fingerprints ..
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3
Diffusion
________ is the net movement of molecules down a concentration gradient.
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4
Plasmolysis
________ occurs in plant cells.
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5
Phospholipids
________ consist of one glycerol molecule linked to two fatty acids and a modified phosphate group.
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6
passive transport
Facilitated diffusion is a(n) ________ involving transmembrane proteins.
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7
Longer tails
________ make the membrane less permeable (increased hydrophobic reactions .)
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8
Osmosis
________ is the diffusion of water across a selectively permeable membrane.
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9
Bulk transport
________ is the movement of large particles across the plasma membrane using vesicles.
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10
Electrical gradients
________ are a combo of two gradients.
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11
cholesterol
Adding ________ to membranes increases the density of the hydrophobic section and it reduces membrane permeability.
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12
Receptor Medicated Endocytosis
________ describes a specific form of pinocytosis using receptor proteins and a coated pit.
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13
Active transport
________ moves substances against their gradient and requires an input of energy (ATP .)
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14
Pinocytosis
________ describes how vesicles form around a liquid or very small particles.
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15
Membrane fluidity
________ decreases as the temperature drops.
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16
Isotonic solutions
________ describe how the amount of solute and water are equal on both sides of the membrane.
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17
Diffusion
________ is a type of passive transport.
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18
Phospholipids
________ also tend to form a phospholipids bilayer.
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19
Membrane fluidity
________ decreases as temperature drops.
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20
There are three mechanisms of membrane transport
diffusion, facilitated diffusion through transports of carriers, and active transport (this mechanism requires energy for transport.)
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21
There are two types of membrane proteins
integral and peripheral
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22
There are two varieties
exocytosis and endocytosis
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23
The three mechanisms of membrane transport are:
diffusion, facilitated diffusion through transports of carriers, and active transport (this mechanism requires energy for transport.)
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24
The two types of membrane proteins are:
integral and peripheral.
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25
The factors that influence the behavior of the membrane are:
the number of double bonds in phospholipid tails, length of the tails, the number of cholesterol molecules in the membranes, and the temperatures.
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