Ch. 1 Foundations (Exam 1) Flashcards
Defining Life, Chemical Ideas, Cell Theory, Valence
How do we define life biochemically?
Life is biochemically defined as systems w/ heredity information, and these systems metabolize using enzymes
What is the basic idea of collision theory?
The reaction rate is proportional to the number of collisions (^rate = ^# of collisions)
What is the forward rate law formula?
Forward rate constant multiplied by the concentrations of the reactants
What is the reverse rate law?
Reverse rate constant multiplied by the concentrations of the products
What is the proportional constant between rate and concentration called?
Rate constant (k)
What is the equilibrium constant (Keq) formula?
Forward rate law divided by the reverse rate law, which equals the concentrations of the products over the concentrations of the reactants
What is the Steady State?
The biological reality of equilibrium
What 3 things does the Steady State require?
1) Substrate (reactant)
2) Intermediate
3) Product
What are 2 examples of single-celled organisms?
Bacteria and yeast
Are mammals prokaryotic or eukaryotic?
Eukaryotic
What are 2 traits of a eukaryotic organism?
1) Internal, membrane-bound organelles
2) Nucleus
What is special about the membrane surrounding mammalian organelles?
The membrane is semi-permeable
What do prokaryotic organisms have in place of a nucleus?
Nucleoid
Aside from lacking a nucleus, what feature are prokaryotes lacking?
Prokaryotes lack membrane-bound organelles
What are the 3 layers of protection of a prokaryote from outermost to innermost?
1) Capsule
2) Cell wall
3) Plasma membrane
