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AS LEVEL BIOLOGY FLASHCARDS > UNIT 4-CELL MEMBRANES & TRANSPORT🤎 > Flashcards

UNIT 4-CELL MEMBRANES & TRANSPORT🤎 Flashcards

1
Q

state the use of the cell membrane

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1
Q

show four different arrangements of phospholipid molecules on the surface of water

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2
Q

describe the fluid mosaic model of a membrane (4) (refer to the hydrophilic/ hydrophobic interactions and the arrangement of proteins)

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3
Q

draw and describe the arrangement of different components in the cell surface membrane

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4
Q

describe the roles of phospholipids in the cell surface membrane

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4
Q

describe the roles of cholesterol in the cell surface membrane

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5
Q

describe the roles of glycolipids, glycoproteins and proteins in the cell surface membrane in detail

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6
Q

what is cell signalling? explain the main stages in the process of cell signalling (3)

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7
Q

define simple diffusion, explain five factors influencing the rate of simple diffusion in detail, use calculations and diagrams if necessary to explain the effect of SA:V ratio

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8
Q

define facilitated diffusion, state two types of transport proteins

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9
Q

explain the process of transport by channel and carrier proteins in detail, include whether energy is required or not

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10
Q

state two factors affecting the rate of diffusion through channel and carrier proteins

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11
Q

define osmosis, explain two factors affecting osmosis, what are the units of water potential and what is the water potential of pure water?

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12
Q

explain the effects of immersing animal cells in solutions with lower, equal and a higher water potential

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12
Q

explain the effects of immersing plant cells in solutions with lower, equal and a higher water potential

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13
Q

define active transport, explain the process of active transport including whether the process requires energy, explain how pumps carry out active transport using diagrams if necessary

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14
Q

state the use of endocytosis and exocytosis, state whether they require energy or not

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15
Q

define endocytosis and describe different forms of endocytosis using a diagram if necessary

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16
Q

define exocytosis and describe the process of exocytosis in detail using diagrams if necessary

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AS LEVEL BIOLOGY FLASHCARDS (11 decks)

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