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icpp > Questions > Flashcards

Questions Flashcards

1
Q

Intercellular signalling (2)

A

By secreted molecules

By plasma membrane-bound molecules

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2
Q

Signalling by secreted molecules

A

Paracrine
Endocrine
Synaptic

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3
Q

Definition:

Receptor
Ligand
Km

A

Ans

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4
Q

Role of receptors in cellular physiology

A

8

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5
Q

Receptor classifications

A

2

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6
Q

Receptor vs acceptor

A

2

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7
Q

Signal transduction

A

4

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8
Q

Lipids are amphipathic

Explain

A

Contain both hydrophilic and hydrophobic moiety

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9
Q

What causes kink in fatty acid chain

A

Cis double bond

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10
Q

General composition of membranes

A

Ans

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11
Q

Phospholipid motion

A

4

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12
Q

Effect of cis double bond in membrane

A

Reduces phospholipid packing

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13
Q

Structure of cholesterol

A

3
Polar head
Rigid polar sterol region
Non polar fatty acid tail

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14
Q

Paradoxical effects of cholesterol in bilateral

Effects of cholesterol with temperature

A

Ans

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15
Q

Evidence for proteins in membrane

A

(3)Functional

Biochemical(2)

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16
Q

Permitted motions for proteins

A

3

17
Q

Restrictions of membrane protein mobility

Explain

A

Aggregation
Tethering
Interaction with other cells

18
Q

Peripheral vs integral membrane proteins

A

3

19
Q

Describe cytoskeleton in erythrocytes

A

Lattice structure of long spectrin molecules grafted to transmembrane proteins through attachment proteins

20
Q

Membrane protein biosynthesis

A

Ans

21
Q

Why is facilitated diffusion quicker than simple

A

Ams

22
Q

Flux(Js)

A

Ans

23
Q

Diffusion calc

A

K is ADs/trianglex

24
Q

Definition of osmole

A

Measure of solution’s ability to create osmotic pressure, thus affecting movement of water

25
Q

Calculating osmolarity

A

pic ( not actually p)

icpp (1 decks)

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