Topic 2 Cells: Substance Movement Flashcards

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1
Q
  1. Hypertonic, Hypotonic and Isotonic
  2. Bulk Flow
  3. Passive Transport
  4. Active Transport
  5. Endocytosis
  6. Exocytosis
A

Techniques needed for cells to move substances

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2
Q
  • Higher solute concentration
A

Hypertonic

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3
Q
  • Lower solute concentration
A

Hypotonic

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4
Q
  • Equal solute concentration
A

Isotonic

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5
Q
  • Movement of substances in response to force or pressure
A

Bulk Flow

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6
Q
  • Simple diffusion
  • Osmosis
  • Dialysis (diffusion of different solutes across membrane)
  • Plasmolysis (movement of water outside cell causing collapse)
  • Facilitated diffusion
  • Countercurrent exchange (diffusion by Bulk Flow in opposite directions)
A

Passive Transport

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7
Q
  • Movement of molecules against concentration gradients
A

Active Transport

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8
Q

Primary, Secondary, and Group translocation

A

Types of Active Transport

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9
Q
  • ATP used to move against
A

Primary Active Transport

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10
Q
  • energy indirectly used to move against
A

Secondary Active Transport

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11
Q
  • in prokaryotes when substance is chemically altered and prevents it from diffusing back out
A

Group Translocation Active Transport

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12
Q
  • contains three types of active transport
A

Endocytosis

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13
Q

Phagocytosis, Pinocytosis, and receptor-mediated

A

Types of Active Transport in endocytosis

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14
Q
  • solids enter cell; white blood cell engulfs it as plasma membrane wraps outward around substance
A

Phagocytosis

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15
Q
  • plasma membrane moves around liquid
A

Pinocytosis

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16
Q
  • form of pinocytosis in which ligands bind to receptors
A

Receptor-mediated endocytosis

17
Q
  • Encompasses transportation out of the cell
A

Exocytosis

18
Q
  • Gibbs Free Energy: delta G = delta H – T delta S
    o H = enthalpy
    o T = temp
    o S = entropy
  • If delta G is negative: reaction can occur spontaneously
  • If delta G is positive: reaction is nonspontaneous
  • Spontaneous change: Gibbs free energy goes down, stability up, work down
  • Spontaneous Reaction: free energy release and delta G < 0
  • Nonspontaneous Reaction: free energy is required and delta G > 0
  • Basal Metabolic Rate: increases as size increases
  • Increased temperature = increased metabolism
  • Increased age = decreased metabolism
A

Bio thermodynamics