Chapter 5 Flashcards

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1
Q

A cell has a _____ and is ____ permeable

A

Phospholipid bilayer; selectively

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2
Q

____ model illustrates structure and function of plasma membrane

A

Fluid mosaic

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3
Q

A cell’s membrane is

A

Selectively permeable

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4
Q

A membrane allows

A

small, non-polar molecules

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5
Q

Molecules passing through the bilayer with no energy required

A

Passive transport

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6
Q

Non-polar and small polar molecules pass through by

A

Simple Diffusion

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7
Q

Molecules flow across a ____ from a high density do a small density

A

Concentration gradient

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8
Q

Diffusion of water across the membrane

A

Osmosis

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9
Q

Less solute

A

Hypotonic

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10
Q

More solute

A

Hypertonic

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11
Q

Balanced

A

Isotonic

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12
Q

Animal cells like to be___

A

Isotonic

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13
Q

Plant cells like to be ___

A

Hypotonic

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14
Q

Larger ions are able to pass through membrane with help from ___

A

Transport proteins

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15
Q

Passive transport with the help of transport proteins

A

Facilitated Diffusion

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16
Q

Active transport

A

Requires energy; against concentration gradiant

17
Q

Phagocytosis

A

Solid energy source

18
Q

Pinocytosis

A

Liquid energy source

19
Q

Exocytosis

A

Exports bulky materials from cell

20
Q

Endocytosis

A

Cells take in large molecules or fluids; has receptors

21
Q

Energy

A

Capacity to do work

22
Q

Energy that is doing the work

A

Kinetic energy

23
Q

Stored Energy

A

Potential energy

24
Q

ATP

A

Cells Energy, lots of potential energy

25
Q

When ATP is being used it releases a ____ and has a lot of ___ energy

A

Phosphate; Kinetic

26
Q

Thermodynamics

A

Study of energy transformations that occur in a collection of matter

27
Q

First Law of thermodynamics

A

Energy can not be created or destroyed only changed from one state to another

28
Q

Second Law of thermodynamics

A

Energy conversions lead to entropy

29
Q

Reactants

A

Object going into a reaction

30
Q

Product

A

Object coming out of a reaction

31
Q

Endergonic Reactions

A

Require net input of energy

32
Q

Exergonic Reaction

A

Reaction releases energy

33
Q

Reactants have more ___ energy than products

A

Potential

34
Q

Ea is the energy ____ required to start a reaction

A

input

35
Q

A ___ lowers the Ea

A

catalyst

36
Q

____ are biological catalysts

A

Enzymes

37
Q

Enzyme Inhibitors

A

Block certain binding sites on enzymes

38
Q

Non Competitive inhibitors

A

Change shape of enzyme