CHP 5 Flashcards
What is Energy?
Capacity to cause change
- perform work
- rearrange collection of matter
Conservarion of Energy?
Energy cannot be created/destroyed
Energy can be converted from one form to another
Entropy?
Energy conversion releases randomized energy in form of heat
Chemical Energy
Molecules store varying amounts of potential energy
Kinetic Energy
Energy of Motion
Potential Energy
Stored energy
location and structure
Metabolism
Chemical processes that occur w/i cells
How does enzyme increase the rate of reaction?
Reduce the amount of Activation Energy
What is Enzyme’s function dependent on?
Three-dimensional Shape
Osmosis
Diffusion of Water
If given a group of words, how would you recognize the enzyme?
–ase ending
Lactose>Lactase
Definition & Characteristics of diffusion?
Example
Movment of molecules spread evenly into available space
proceeds until equilibrium is reached
Ex: Passive Transport
Effects of Hypertonic, Isotonicm and Hypotonic Solution on plant and animal cells?
Hypotonic is when there is a lower concentration of solute & higher concentration of water.
Plant:Turgid
Animal:Lysing
Hypertonic is when there is a higher concentration of solute & lower concentration of water.
Plantn& Animal:Shriveled
Isotonic is when there is an equal concentration of solute & water.
Plant:Flaccid (wilts)
Animal: Normal
Active Transport
Cell expend energy to move molecules across membrane
Need energy and transport protein
From Low concentration to High concentration
Uses ATP
Facilitated Diffusion
Uses protein to transport from a high concentration to low con.
