BIOC 301 Exam 1 Questions and
Answers 2024
Biochemistry - answer-✔The application of chemistry to the study of biological
processes at the cellular and molecular level
Central dogma - answer-✔Self-replicating DNA undergoes unidirectional transfer
to messenger RNAs in transcription which act as templates for protein synthesis in
translation
DNA - answer-✔Genetic information storage of all life (exception of some
viruses). Deoxyribonucleic acid. Instructions to direct synthesis of RNA and DNA
Atmosphere of early earth - answer-✔H2, CH4, NH3, HCN, H2O, some CO and
CO2
Miller-Urey experiment result - answer-✔Showed under conditions of early earth
building blocks like amino acids can arise
Evolution - answer-✔The ability to make a copy and retain information. Any
improvement to your system's ability to be reproduced is selected for and improved
upon with each cycle
Polymerization reactions - answer-✔Reactions to create polymers of the basic
building blocks
,RNA world hypothesis - answer-✔A hypothetical stage in the evolutionary history
of life of Earth in which self-replicating RNA molecules proliferated before the
evolution of DNA and proteins
Why do we use DNA? - answer-✔Presence of the 2'OH group on RNA
significantly reduces its stability
Coulombs law - answer-✔E = (kQaQb)/εr
Van der Waals forces - answer-✔Noncovalent interactions occurring between
neutral groups that are brought close together
Bond angle of water - answer-✔104.5°
Hydrogen bond - answer-✔Electrostatic attraction between oxygen of one water
molecule and the hydrogen of another
Hydrogen bond donor - answer-✔The atom to which the hydrogen atom
participating in the hydrogen bond is covalently bonded (NOF)
Hydrogen bond acceptor - answer-✔The atom of a hydrogen bond which does not
supply the hydrogen atom
Rate of breaking and forming hydrogen bonds in water - answer-✔1-20
picoseconds
Average hydrogen bonds per water molecule - answer-✔3.4
, Hydrophobic effect - answer-✔The ability of water to push together nonpolar
molecules. Due to increase in entropy.
Covalent bond - answer-✔Bond between atoms that share electrons
Hydrophilic molecules - answer-✔Molecules that interact with polar solvents such
as water
Hydrophobic - answer-✔Molecules with little or no H-bonding capacity, nonpolar
Amphipathic - answer-✔Molecules that are both polar and non polar
Micelles - answer-✔Clusters of amphipathic lipids
Acid - answer-✔Any compound that can donate protons
Kw of water at 25°C - answer-✔10^-14 M⁻¹
pH = - answer-✔- log [H⁺]
Henderson-Hasselbalch Equation - answer-✔pH = pKa + log[A⁻]/[HA]
pKa - answer-✔The pH at which an acid is half dissociated
Answers 2024
Biochemistry - answer-✔The application of chemistry to the study of biological
processes at the cellular and molecular level
Central dogma - answer-✔Self-replicating DNA undergoes unidirectional transfer
to messenger RNAs in transcription which act as templates for protein synthesis in
translation
DNA - answer-✔Genetic information storage of all life (exception of some
viruses). Deoxyribonucleic acid. Instructions to direct synthesis of RNA and DNA
Atmosphere of early earth - answer-✔H2, CH4, NH3, HCN, H2O, some CO and
CO2
Miller-Urey experiment result - answer-✔Showed under conditions of early earth
building blocks like amino acids can arise
Evolution - answer-✔The ability to make a copy and retain information. Any
improvement to your system's ability to be reproduced is selected for and improved
upon with each cycle
Polymerization reactions - answer-✔Reactions to create polymers of the basic
building blocks
,RNA world hypothesis - answer-✔A hypothetical stage in the evolutionary history
of life of Earth in which self-replicating RNA molecules proliferated before the
evolution of DNA and proteins
Why do we use DNA? - answer-✔Presence of the 2'OH group on RNA
significantly reduces its stability
Coulombs law - answer-✔E = (kQaQb)/εr
Van der Waals forces - answer-✔Noncovalent interactions occurring between
neutral groups that are brought close together
Bond angle of water - answer-✔104.5°
Hydrogen bond - answer-✔Electrostatic attraction between oxygen of one water
molecule and the hydrogen of another
Hydrogen bond donor - answer-✔The atom to which the hydrogen atom
participating in the hydrogen bond is covalently bonded (NOF)
Hydrogen bond acceptor - answer-✔The atom of a hydrogen bond which does not
supply the hydrogen atom
Rate of breaking and forming hydrogen bonds in water - answer-✔1-20
picoseconds
Average hydrogen bonds per water molecule - answer-✔3.4
, Hydrophobic effect - answer-✔The ability of water to push together nonpolar
molecules. Due to increase in entropy.
Covalent bond - answer-✔Bond between atoms that share electrons
Hydrophilic molecules - answer-✔Molecules that interact with polar solvents such
as water
Hydrophobic - answer-✔Molecules with little or no H-bonding capacity, nonpolar
Amphipathic - answer-✔Molecules that are both polar and non polar
Micelles - answer-✔Clusters of amphipathic lipids
Acid - answer-✔Any compound that can donate protons
Kw of water at 25°C - answer-✔10^-14 M⁻¹
pH = - answer-✔- log [H⁺]
Henderson-Hasselbalch Equation - answer-✔pH = pKa + log[A⁻]/[HA]
pKa - answer-✔The pH at which an acid is half dissociated
