BSC 2010 Exam 2 questions with verified answers
1st law of thermodynamics Ans✓✓✓ Energy cannot be created or
destroyed
2nd law of thermodynamics Ans✓✓✓ Every energy transfer or
transformation increases the entropy of the universe.
3rd law of thermodynamics Ans✓✓✓ No system can reach absolute
zero
A cofactor... Ans✓✓✓ puts an enzyme in an active state
a potassium channel Ans✓✓✓ Which of the following structures would
decrease the electrochemical gradient across a membrane?
activation energy Ans✓✓✓ Energy needed to get a reaction started
activation energy Ans✓✓✓ What is the name of the thermodynamic
barrier that must be overcome before products are formed in a
spontaneous reaction?
active site Ans✓✓✓ The part of an enzyme or antibody where the
chemical reaction occurs.
,active transport Ans✓✓✓ going against concentration gradient (low to
high)
Need energy source (exergonic reaction)
Direct - ATP --> ADP (hydrolysis)
cotransport - facilitated diffusion
ADP Ans✓✓✓ (Adenosine Diphosphate) The compound that remains
when a phosphate group is removed from ATP, releasing energy
All cells have Ans✓✓✓ plasma membrane, chromosomes, ribosomes
allosteric inhibitor Ans✓✓✓ binds to allosteric site and reduces
enzyme activity
amphipathic Ans✓✓✓ In order for a protein to be an integral
membrane protein (transmembrane protein) it would have to be...
amphipathic molecule Ans✓✓✓ A molecule that has both a hydrophilic
region and a hydrophobic region.
, Anabolic Ans✓✓✓ A process in which large molecules are built from
small molecules
CONSUME energy
DECREASE entropy
DECREASE stability
Move AWAY from equilibrium
NON-SPONTANEOUS
aquaporins Ans✓✓✓ Which of the following molecules dramatically
increases the rate of diffusion of water across cell membranes?
ATP Ans✓✓✓ (adenosine triphosphate) main energy source that cells
use for most of their work
Bacteria and Archaea Ans✓✓✓ Which domains of life are classified as
prokaryotes?
1st law of thermodynamics Ans✓✓✓ Energy cannot be created or
destroyed
2nd law of thermodynamics Ans✓✓✓ Every energy transfer or
transformation increases the entropy of the universe.
3rd law of thermodynamics Ans✓✓✓ No system can reach absolute
zero
A cofactor... Ans✓✓✓ puts an enzyme in an active state
a potassium channel Ans✓✓✓ Which of the following structures would
decrease the electrochemical gradient across a membrane?
activation energy Ans✓✓✓ Energy needed to get a reaction started
activation energy Ans✓✓✓ What is the name of the thermodynamic
barrier that must be overcome before products are formed in a
spontaneous reaction?
active site Ans✓✓✓ The part of an enzyme or antibody where the
chemical reaction occurs.
,active transport Ans✓✓✓ going against concentration gradient (low to
high)
Need energy source (exergonic reaction)
Direct - ATP --> ADP (hydrolysis)
cotransport - facilitated diffusion
ADP Ans✓✓✓ (Adenosine Diphosphate) The compound that remains
when a phosphate group is removed from ATP, releasing energy
All cells have Ans✓✓✓ plasma membrane, chromosomes, ribosomes
allosteric inhibitor Ans✓✓✓ binds to allosteric site and reduces
enzyme activity
amphipathic Ans✓✓✓ In order for a protein to be an integral
membrane protein (transmembrane protein) it would have to be...
amphipathic molecule Ans✓✓✓ A molecule that has both a hydrophilic
region and a hydrophobic region.
, Anabolic Ans✓✓✓ A process in which large molecules are built from
small molecules
CONSUME energy
DECREASE entropy
DECREASE stability
Move AWAY from equilibrium
NON-SPONTANEOUS
aquaporins Ans✓✓✓ Which of the following molecules dramatically
increases the rate of diffusion of water across cell membranes?
ATP Ans✓✓✓ (adenosine triphosphate) main energy source that cells
use for most of their work
Bacteria and Archaea Ans✓✓✓ Which domains of life are classified as
prokaryotes?
