Bio 93- Midterm 1 Exam Questions And
All Correct Answers.
atoms - Answer smallest unit of chemical elements
molecules - Answer two or more atoms combined
compound - Answer two or more elements combined in a fixed ration
C, O, H, N - Answer ... are 4 elements that make up 96% of all living matter
covalent bond - Answer what is the strongest bond?
covalent - Answer sharing of electrons by two atoms
ionic - Answer transfer of electrons between two atoms
hydrogen bond - Answer what is a weak bond?
hydrogen bond - Answer the H atom forms one covalent bond and a second weaker bond with an atom
in another molecules
nonpolar - Answer equal sharing of electrons
(two of the same element)
polar - Answer unequal sharing of electrons
has a charge
(water)
,negative - Answer what is the charge of O in water?
positive - Answer what is the charge of H in water?
cohesion - Answer interactions between water molecules
(H2O with H2O)
solvent - Answer interactions between water and other molecules
4 bonds - Answer what is the maximum amount of bonds that hydrogen can form?
15% - Answer in room temperature of water what % is the maximum amount of bonds going to be
made?
more acidic - Answer when H+ concentration increases...
more basic - Answer what H- concentration decreases...
hydrophilic - Answer affinity for water
(polar and ionic bonds)
hydrophobic - Answer repel water
(nonpolar covalent bonds)
buffers - Answer chemical processes are sensitive to pH changes and resist change in the pH solution
7.4 - Answer the pH of human blood is...
carbonic acid and bicarbonate - Answer what are the main buffers in blood?
, right - Answer response to a rise in pH in blood (becomes more basic)
left - Answer response to a drop in pH in blood (becomes more acidic)
carbon atoms - Answer building blocks for biological molecules
4 VE - Answer how many VE does carbon have?
covalent bonds - Answer how do functional groups join to the carbon skeleton?
hydroxyl - Answer -alcohols
-polar
-dissolves organic compounds (like sugars)
carbonyl - Answer -ketones (within skeleton)
-aldehydes (at the end of skeleton)
carboxyl - Answer -is acidic
-weak acid
-hydroxyl+carbonyl
amino - Answer -base
-animes
-can pick up H from surrounding solutions
amino and carboxyl - Answer what functional groups make up an amino acid?
sulfhydryl - Answer -thiols
All Correct Answers.
atoms - Answer smallest unit of chemical elements
molecules - Answer two or more atoms combined
compound - Answer two or more elements combined in a fixed ration
C, O, H, N - Answer ... are 4 elements that make up 96% of all living matter
covalent bond - Answer what is the strongest bond?
covalent - Answer sharing of electrons by two atoms
ionic - Answer transfer of electrons between two atoms
hydrogen bond - Answer what is a weak bond?
hydrogen bond - Answer the H atom forms one covalent bond and a second weaker bond with an atom
in another molecules
nonpolar - Answer equal sharing of electrons
(two of the same element)
polar - Answer unequal sharing of electrons
has a charge
(water)
,negative - Answer what is the charge of O in water?
positive - Answer what is the charge of H in water?
cohesion - Answer interactions between water molecules
(H2O with H2O)
solvent - Answer interactions between water and other molecules
4 bonds - Answer what is the maximum amount of bonds that hydrogen can form?
15% - Answer in room temperature of water what % is the maximum amount of bonds going to be
made?
more acidic - Answer when H+ concentration increases...
more basic - Answer what H- concentration decreases...
hydrophilic - Answer affinity for water
(polar and ionic bonds)
hydrophobic - Answer repel water
(nonpolar covalent bonds)
buffers - Answer chemical processes are sensitive to pH changes and resist change in the pH solution
7.4 - Answer the pH of human blood is...
carbonic acid and bicarbonate - Answer what are the main buffers in blood?
, right - Answer response to a rise in pH in blood (becomes more basic)
left - Answer response to a drop in pH in blood (becomes more acidic)
carbon atoms - Answer building blocks for biological molecules
4 VE - Answer how many VE does carbon have?
covalent bonds - Answer how do functional groups join to the carbon skeleton?
hydroxyl - Answer -alcohols
-polar
-dissolves organic compounds (like sugars)
carbonyl - Answer -ketones (within skeleton)
-aldehydes (at the end of skeleton)
carboxyl - Answer -is acidic
-weak acid
-hydroxyl+carbonyl
amino - Answer -base
-animes
-can pick up H from surrounding solutions
amino and carboxyl - Answer what functional groups make up an amino acid?
sulfhydryl - Answer -thiols
