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
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
