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Bio 1610 SLCC Exam 2 Questions With Complete Solutions
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Bio 1610 SLCC Exam 2 Questions With Complete Solutions Thermodynamics the study of energy transformations the term system in thermodynamics means matter under study the term surroundings in thermodynamics means everything outside the system the term closed in thermodynamics means isolated fro...

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  • October 13, 2024
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  • 2024/2025
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Bio 1610 SLCC Exam 2 Questions With
Complete Solutions

Thermodynamics the study of energy transformations




the term system in thermodynamics means matter under study




the term surroundings in thermodynamics means everything outside the system




the term closed in thermodynamics means isolated from its surroundings




the term open in thermodynamics means can be transferred between systems and

surroundings




organisms are open systems




First law of thermodynamics Energy can be transferred and transformed, but it cannot be

created or destroyed.

, Bio 1610 SLCC Exam 2 Questions With
Complete Solutions
energy cant be created or destroyed only transformed




Entropy A measure of disorder or randomness.




the more random a collection of matter the greater its entropy




Free energy energy that is available to do work




Exergonic reactions are RELEASE energy and yield products that contain less potential

energy than their reactants. EXIT. FIRE. EXIT.




Endergonic reactions are ABSORB free energy from its surroundings. Store energy.

ENTER.




ATP powers cellular work by coupling exergonic reactions to endergonic reactions




G=H-TS T is temp in Kelvin

, Bio 1610 SLCC Exam 2 Questions With
Complete Solutions

Mechanical work beating of cilia, contraction of muscle cells, movement of chromosomes

during cellular reproduction




Transport work the pumping of substances across membranes against the direction of

spontaneous movement




Chemical work the driving of endergonic reactions that would not occur spontaneously




breathing and cellular respiration are closely related




ATP adenosine triphosphate




What is ATP? a close packing of nucleotide consisting of the nitrogenenous base adenine,

the sugar ribose, and a CHAIN OF THREE PHOSPHATE GROUPS




Phosphate bonds in ATP are weak covalent bonds

, Bio 1610 SLCC Exam 2 Questions With
Complete Solutions
phosphorylated the recipient of the phosphate group, a transferring phosphate group to

another molecule




ATP is a renewable resource that is regenerated by addition of a phosphate group to

adenosine diphosphate (ADP)




In a working muscle cell the entire pool of ATP is recycled once each minute, over 10

million ATP consumed and regenerated per second per cell.




Enzymes speed up the cells chemical reactions by lowering energy barriers




Catalyst A chemical agent that changes the rate of a reaction without being consumed by

the reaction.




enzyme A catalytic protein.




reactants must absorb free energy of activation from their surroundings

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