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Exam 2025 Questions With Correct Answers
/ // // // // //
Both /
/amino /
/acids /
/and //nucleotides //form //complex //chains. //Select //all //the //answers //below //that //are //accurate.
A. //The //chains //formed //by //both //have //polar //phosphate //groups.
B. //Both //contain //peptide //bonds.
C. //Both //contain //nitrogen.
D. //The //chains //formed //by //both //can //be //lysed //by //trypsin.
E. //The //sequence //of //chains //both //form //from //preexisting //templates. //- //verified //answer(s)-
✔✔C. //Both //contain //nitrogen.
E. //The //sequence //of //chains //both //form //from //preexisting //templates.
When //a //population //is //in //Hardy-Weinberg //equilibrium, //which //of //the //following //is //true?
A. //All //of //its //recessive //lethal //genes //are //wiped //out, //leaving //only //healthy //dominant //genes.
B. //dN/dt //= //0, //N //= //population //size.
C. /
/Mutations /
/occur /
/at //five //times //the //normal //rate //to //balance //the //loss //of //genes //by //way //of //natural //selection.
D. //The //frequencies //of //the //alleles //in //the //population //change //over //time.
,E. /
/The /
/frequencies //of //genotypes //in //the //population //are //stable //over //time. //- //verified //answer(s)-
✔✔E. //The //frequencies //of //genotypes //in //the //population //are //stable //over //time.
Which //of //the //following //is //NOT //an //accurate //description //of //protein //synthesis //and //folding?
A. //All //protein //synthesis //is //initiated //in //the //cytoplasm.
B. //Many //copies //of //a //protein //can //be //synthesized //simultaneously //from //the //same //mRNA.
C. //The //3D //shape //of //a //protein //is //determined //largely //by //its //amino //acid //sequence.
D. /
/The /
/entire /
/chain //of //amino //acids //exits //the //ribosome //before //it //begins //folding //into //its //3D //shape.
E. //The //first //encoded //amino //acid //in //every //protein //is //methionine. //- //verified //answer(s)-
✔✔C. //The //3D //shape //of //a //protein //is //determined //largely //by //its //amino //acid //sequence.
Neurotransmitter /
/released /
/at //the //synapse //binds //to //two //classes //of //receptors. //Select //the //correct //response(s).
A. /
/Metabotropic /
/receptors /
/that /
/do /
/not /
/form /
/an /
/ion /
/pore /
/are /
,/linked /
/with /
/signal //transduction //mechanisms //and //can //alter //neuron //function //for //seconds //to //minutes.
B. /
/Receptor /
/tyrosine /
/kinases /
/that /
/activate //signal //transduction //mechanisms //and //change //gene //transcription //that //can //last //for
//hours //to //days.
C. /
/Ionotropic /
/receptors /
/that /
/do /
/not /
/form /
/an /
/ion /
/pore /
/are /
/linked /
/with /
/signal //transduction //mechanisms //and //can //alter //neuron //function //for //seconds //to //minutes.
D. /
/Ionotropic /
/receptors //that //are //directly //linked //to //an //ion //pore //and //are //opened //within //milliseconds //in
//response //to //neurotransmitter.
E. /
/Steroid /
/hormone /
/receptors /
/that /
/can /
/activate /
/changes //in //gene //transcription //that //can //last //for //hours //to //days. //- //verified //answer(s)-
, ✔✔A. /
/Metabotropic /
/receptors /
/that /
/do /
/not /
/form /
/an /
/ion /
/pore /
/are /
/linked /
/with /
/signal //transduction //mechanisms //and //can //alter //neuron //function //for //seconds //to //minutes.
D. /
/Ionotropic /
/receptors //that //are //directly //linked //to //an //ion //pore //and //are //opened //within //milliseconds //in
//response //to //neurotransmitter.
Many /
/proteins /
/are /
/transported /
/around /
/cells /
/in //vesicles. //Which //of //the //following //determines //the //specificity //or //directionality //of //vesicle
//transport?
A. //Clathrin //coat //proteins.
B. //v-SNARES //and //t-SNARES.
C. //Flippase.
D. //Myristoylation.
E. //Hydrophobic //domains. //- //verified //answer(s)-✔✔B. //v-SNARES //and //t-SNARES.
Open
/ /
Exam 2025 Questions With Correct Answers
/ // // // // //
Both /
/amino /
/acids /
/and //nucleotides //form //complex //chains. //Select //all //the //answers //below //that //are //accurate.
A. //The //chains //formed //by //both //have //polar //phosphate //groups.
B. //Both //contain //peptide //bonds.
C. //Both //contain //nitrogen.
D. //The //chains //formed //by //both //can //be //lysed //by //trypsin.
E. //The //sequence //of //chains //both //form //from //preexisting //templates. //- //verified //answer(s)-
✔✔C. //Both //contain //nitrogen.
E. //The //sequence //of //chains //both //form //from //preexisting //templates.
When //a //population //is //in //Hardy-Weinberg //equilibrium, //which //of //the //following //is //true?
A. //All //of //its //recessive //lethal //genes //are //wiped //out, //leaving //only //healthy //dominant //genes.
B. //dN/dt //= //0, //N //= //population //size.
C. /
/Mutations /
/occur /
/at //five //times //the //normal //rate //to //balance //the //loss //of //genes //by //way //of //natural //selection.
D. //The //frequencies //of //the //alleles //in //the //population //change //over //time.
,E. /
/The /
/frequencies //of //genotypes //in //the //population //are //stable //over //time. //- //verified //answer(s)-
✔✔E. //The //frequencies //of //genotypes //in //the //population //are //stable //over //time.
Which //of //the //following //is //NOT //an //accurate //description //of //protein //synthesis //and //folding?
A. //All //protein //synthesis //is //initiated //in //the //cytoplasm.
B. //Many //copies //of //a //protein //can //be //synthesized //simultaneously //from //the //same //mRNA.
C. //The //3D //shape //of //a //protein //is //determined //largely //by //its //amino //acid //sequence.
D. /
/The /
/entire /
/chain //of //amino //acids //exits //the //ribosome //before //it //begins //folding //into //its //3D //shape.
E. //The //first //encoded //amino //acid //in //every //protein //is //methionine. //- //verified //answer(s)-
✔✔C. //The //3D //shape //of //a //protein //is //determined //largely //by //its //amino //acid //sequence.
Neurotransmitter /
/released /
/at //the //synapse //binds //to //two //classes //of //receptors. //Select //the //correct //response(s).
A. /
/Metabotropic /
/receptors /
/that /
/do /
/not /
/form /
/an /
/ion /
/pore /
/are /
,/linked /
/with /
/signal //transduction //mechanisms //and //can //alter //neuron //function //for //seconds //to //minutes.
B. /
/Receptor /
/tyrosine /
/kinases /
/that /
/activate //signal //transduction //mechanisms //and //change //gene //transcription //that //can //last //for
//hours //to //days.
C. /
/Ionotropic /
/receptors /
/that /
/do /
/not /
/form /
/an /
/ion /
/pore /
/are /
/linked /
/with /
/signal //transduction //mechanisms //and //can //alter //neuron //function //for //seconds //to //minutes.
D. /
/Ionotropic /
/receptors //that //are //directly //linked //to //an //ion //pore //and //are //opened //within //milliseconds //in
//response //to //neurotransmitter.
E. /
/Steroid /
/hormone /
/receptors /
/that /
/can /
/activate /
/changes //in //gene //transcription //that //can //last //for //hours //to //days. //- //verified //answer(s)-
, ✔✔A. /
/Metabotropic /
/receptors /
/that /
/do /
/not /
/form /
/an /
/ion /
/pore /
/are /
/linked /
/with /
/signal //transduction //mechanisms //and //can //alter //neuron //function //for //seconds //to //minutes.
D. /
/Ionotropic /
/receptors //that //are //directly //linked //to //an //ion //pore //and //are //opened //within //milliseconds //in
//response //to //neurotransmitter.
Many /
/proteins /
/are /
/transported /
/around /
/cells /
/in //vesicles. //Which //of //the //following //determines //the //specificity //or //directionality //of //vesicle
//transport?
A. //Clathrin //coat //proteins.
B. //v-SNARES //and //t-SNARES.
C. //Flippase.
D. //Myristoylation.
E. //Hydrophobic //domains. //- //verified //answer(s)-✔✔B. //v-SNARES //and //t-SNARES.
