Uconn ECE Exam: Biology 1107/1108|95
Verified Questions With Answers LATEST
2025/26.
Structure of an amino acid - AnswerAmino group, carboxyl group, R group
The permeability of the phospholipid bilayer is determined by? - AnswerThe number of
saturated fatty acids, integral proteins in the membrane, and temperature
Primary protein structure - AnswerSequence chain of amino acids
Secondary protein structure - AnswerSequence of amino acids are linked by hydrogen
bonds
Tertiary protein structure - AnswerCertain attractions are present between alpha
helices and pleated sheets
Quaternary protein structure - AnswerMultiple amino acid chains
Where is energy in ATP stored? - AnswerThe bond between the second and third
phosphate
Allosteric activation - AnswerActive site becomes available to the substrates when a
regulatory molecule binds to a different site on the enzyme.
Allosteric deactivation - AnswerThe active site becomes unavailable to the substrates
when a regulatory molecule binds to a different site on the enzyme.
What is active transport? - AnswerTransport that uses energy via phosphorylation(ex.
Na/K pump)
OIL RIG - AnswerOxidation is losing, reduction is gaining
What makes a molecule polar? - AnswerUneven charge
What makes a molecule hydrophobic and hydrophillic? - AnswerOxygen to hydrogen
bonds makes a molecule hydrophillic (likes water)
DNA Replication - Answer
A and G are: - AnswerPurines
, T and C and U are: - AnswerPyrimidines
What is the role of NADH and FADH2 in cellular respiration? - AnswerThey are
electron carriers, which travel down the electron transport chain during ETC
What is meant by, "the genetic code is redundant but unambiguous?" - AnswerA
single amino acid may be coded for by more than one codon.
Lac operon - Answer
Hypertonic - AnswerGreater concentration of solute (cell shrinks)
Isotonic - AnswerCell stays the same
Hypotonic - AnswerLower concentration of solute (cell swells)
Histone Acetylation - AnswerWhen histone proteins spread out and uncoil.
Encourages the transcription of DNA
How is the surface area to volume ratio increased? - AnswerBy folding, branching,
flattening, etc.
What structures are found in both prokaryotes and eukaryotes? - AnswerCell
membrane, ribosomes, DNA, cytoplasm
Meiosis - AnswerMeiosis has 2 divisions, is for reproduction, parent cell 2n diploid, 4
daughter cells, done in reproductive cells, produces haploid gametes
Meiosis I - Answer
What is the role of second messengers in cell communication? - AnswerThey are
small and produced quickly in large amounts. Second messengers are intracellular
signaling molecules released by the cell to trigger physiological changes.
Neurotransmitters use ___ as their mechanism for action - AnswerChemically gated
ion channels
Hormones - AnswerChemical messages that use signal transduction pathways to
amplify cellular processes so that small amounts of ligand can create a large response.
They also allow cells to react differently to the same chemical.
Verified Questions With Answers LATEST
2025/26.
Structure of an amino acid - AnswerAmino group, carboxyl group, R group
The permeability of the phospholipid bilayer is determined by? - AnswerThe number of
saturated fatty acids, integral proteins in the membrane, and temperature
Primary protein structure - AnswerSequence chain of amino acids
Secondary protein structure - AnswerSequence of amino acids are linked by hydrogen
bonds
Tertiary protein structure - AnswerCertain attractions are present between alpha
helices and pleated sheets
Quaternary protein structure - AnswerMultiple amino acid chains
Where is energy in ATP stored? - AnswerThe bond between the second and third
phosphate
Allosteric activation - AnswerActive site becomes available to the substrates when a
regulatory molecule binds to a different site on the enzyme.
Allosteric deactivation - AnswerThe active site becomes unavailable to the substrates
when a regulatory molecule binds to a different site on the enzyme.
What is active transport? - AnswerTransport that uses energy via phosphorylation(ex.
Na/K pump)
OIL RIG - AnswerOxidation is losing, reduction is gaining
What makes a molecule polar? - AnswerUneven charge
What makes a molecule hydrophobic and hydrophillic? - AnswerOxygen to hydrogen
bonds makes a molecule hydrophillic (likes water)
DNA Replication - Answer
A and G are: - AnswerPurines
, T and C and U are: - AnswerPyrimidines
What is the role of NADH and FADH2 in cellular respiration? - AnswerThey are
electron carriers, which travel down the electron transport chain during ETC
What is meant by, "the genetic code is redundant but unambiguous?" - AnswerA
single amino acid may be coded for by more than one codon.
Lac operon - Answer
Hypertonic - AnswerGreater concentration of solute (cell shrinks)
Isotonic - AnswerCell stays the same
Hypotonic - AnswerLower concentration of solute (cell swells)
Histone Acetylation - AnswerWhen histone proteins spread out and uncoil.
Encourages the transcription of DNA
How is the surface area to volume ratio increased? - AnswerBy folding, branching,
flattening, etc.
What structures are found in both prokaryotes and eukaryotes? - AnswerCell
membrane, ribosomes, DNA, cytoplasm
Meiosis - AnswerMeiosis has 2 divisions, is for reproduction, parent cell 2n diploid, 4
daughter cells, done in reproductive cells, produces haploid gametes
Meiosis I - Answer
What is the role of second messengers in cell communication? - AnswerThey are
small and produced quickly in large amounts. Second messengers are intracellular
signaling molecules released by the cell to trigger physiological changes.
Neurotransmitters use ___ as their mechanism for action - AnswerChemically gated
ion channels
Hormones - AnswerChemical messages that use signal transduction pathways to
amplify cellular processes so that small amounts of ligand can create a large response.
They also allow cells to react differently to the same chemical.
