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Biology > Transport/energy > Flashcards

Transport/energy Flashcards

1
Q

Maintains homeostasis
Allows nutrients in
Removing waste

A

Cell membrane

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2
Q

Phospholipids

A

Are arranged in bilayer

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3
Q

Integral protein

A

Go whole way through bilayer

Transmembrane protein

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4
Q

Peripheral protein

A

Loosely attached to membrane

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5
Q

Cholesterol

A

Helps stabilize membrane at warmer temps and keep membrane fluid

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6
Q

Passive transport

A

Movement of molecules down the concentration gradient with no energy

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7
Q

Simple diffusion

A

Movement from high to low concentration
No atp
No protein

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8
Q

Tonicity

A

Ability of surrounding solution to cause a cell to gain or lose water

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9
Q

Isotonic

A

Solute concentration of a cell and its environment are equal

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10
Q

Hypotonic

A

Solute concentration lower in the cell
Water moves in cell
Swells

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11
Q

Hypertonic

A

Solute concentration greater in the cell
Water moves or if cell
Shrinks

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12
Q

Facilitated diffusion

A

High to love concentration
No atp
Transport protein required

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13
Q

Aquaporins

A

Integral. Protein channels that diffuses water very rapidly

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14
Q

Active transport

A

Moves against concentration gradient

Needs energy

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15
Q

Ion pumps

A

Low to high concentration
ATP required
Transport proteins required

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16
Q

Bulk transport

A

Transporting molecules in or out within a vesicle that fuses within the cell membrane

17
Q

Exocytosis

A

Exports bulky molecules such as proteins and polysaccharides

18
Q

Endocytosis

A

Important substances useful to the liveliness of the cell

19
Q

Phagocytosis

A

Engulfment of particle by wrapping cell membrane around it forming a vacuole
Solids

20
Q

Pinocytosis

A

Fluids are taken into small vesicles

Liquids

21
Q

Receptor mediated

A

Uses receptors to interact with a specific protein to initiate a vesicle formation

22
Q

Chemical reactions used for

A

Cell maintenance
Manufacturing cell parts
Cell replication

23
Q

Energy

A

To cause change or to perform work

24
Q

Kinetic energy

A

Energy of motion

25
Q

Potential energy

A

Stored energy

26
Q

Exergonic reactions

A

Release energy

27
Q

Endergonic reactions

A

Require input of energy

28
Q

Metabolism

A

Total of an organisms chemical reactions

29
Q

Enzyme

A

Organic catalyst to speed up a chemical reaction

30
Q

Substrate

A

Reactants in an enzymatic reaction that are broken or put together

31
Q

Active site

A

Location on an enzyme where the substrate is modified in the new product forms

32
Q

Factors affecting enzyme speed

A 
Substrate concentration 
Temperature
pH
Cofactors 
Inhibition
33
Q

Non competitive inhibition

A

Inhibitor binds to the enzyme at a location other than the active site

34
Q

Competitive inhibition

A

Inhibitor and the substrate compete for the same active site

Biology (8 decks)

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