UTA Biol 1441 Exam 2 | Latest study set |
Questions and verified Answers
Metabolism - ANSW-Total sum of organism's chemical reactions.
Complicated and interconnected in living cells
Catabolic pathways/reactions
(example) - ANSW-Break down complex molecules to simpler ones
Release E
Ex. Cellular Respiration - sugar glucose broken down to CO2 and H2O
Anabolic Pathways/reactions
(example) - ANSW-Consume E to build complicated molecules from simpler ones.
Ex. Photosynthesis
Heat/Thermal Energy - ANSW-kinetic E of random movement of atoms/molecules
System - ANSW-collection of matter being studied under Laws of Thermodynamics
Surroundings - ANSW-Everything outside system
Isolated (closed) system - ANSW-Unable to exchange E or matter with surroundings
Ex. Liquid in thermos
Open system - ANSW-energy and matter can be transferred between system and surroundings
First Law of Thermodynamics - ANSW-Energy cannot be created or destroyed.
Energy of the universe is constant
Second Law of Thermodynamics - ANSW-Every E transformation or transfer increases entropy of the
universe
Entropy - ANSW-randomness/disorganization
Heat - most disordered E
Spontaneous reactions increase entropy
Energy of Living Systems - ANSW-Highly organized
Require continuous input of E to maintain organization.
Open systems in terms of E
Free Energy (G) - ANSW--Part of a system's E that can do work when temp and pressure constant
delta G system = delta H - T*delta S
-delta H = change in system's total E
-T = absolute Temp (Kelvin)
-delta S - change in system's entropy
Spontaneous Processes - ANSW--negative delta G = release E/entropy increases
-system has less E after process occurs
G Stability - ANSW-G is measure of instability of system
Questions and verified Answers
Metabolism - ANSW-Total sum of organism's chemical reactions.
Complicated and interconnected in living cells
Catabolic pathways/reactions
(example) - ANSW-Break down complex molecules to simpler ones
Release E
Ex. Cellular Respiration - sugar glucose broken down to CO2 and H2O
Anabolic Pathways/reactions
(example) - ANSW-Consume E to build complicated molecules from simpler ones.
Ex. Photosynthesis
Heat/Thermal Energy - ANSW-kinetic E of random movement of atoms/molecules
System - ANSW-collection of matter being studied under Laws of Thermodynamics
Surroundings - ANSW-Everything outside system
Isolated (closed) system - ANSW-Unable to exchange E or matter with surroundings
Ex. Liquid in thermos
Open system - ANSW-energy and matter can be transferred between system and surroundings
First Law of Thermodynamics - ANSW-Energy cannot be created or destroyed.
Energy of the universe is constant
Second Law of Thermodynamics - ANSW-Every E transformation or transfer increases entropy of the
universe
Entropy - ANSW-randomness/disorganization
Heat - most disordered E
Spontaneous reactions increase entropy
Energy of Living Systems - ANSW-Highly organized
Require continuous input of E to maintain organization.
Open systems in terms of E
Free Energy (G) - ANSW--Part of a system's E that can do work when temp and pressure constant
delta G system = delta H - T*delta S
-delta H = change in system's total E
-T = absolute Temp (Kelvin)
-delta S - change in system's entropy
Spontaneous Processes - ANSW--negative delta G = release E/entropy increases
-system has less E after process occurs
G Stability - ANSW-G is measure of instability of system
