WGU Biochemistry Exam Questions
With Complete Solutions
/. DNA is a type of _____________ - Answer-nucleic acid
/.__________ are found in virtually all cells - Answer-Nucleic acids
/.What is the function of nucleic acids? - Answer-To encode heritable information
and pass it on from generation to generation
/.What three things make up nucleotides? - Answer-Phosphate, pentose sugar, and
pyrimidine or purine base
/.What are the four bases in DNA? - Answer-Adenine, guanine, cytosine, and
thymine
/.What are the four bases in RNA? - Answer-Adenine, guanine, cytosine, and uracil
/.How many strands does RNA have? DNA? - Answer-RNA is a single strand, DNA is
double
/.Which base pairs with Adenine? - Answer-Thymine
/.Which base pairs with Guanine? - Answer-Cytosine
/.Where is DNA located? - Answer-In the Nucleus
/.What encases the DNA? - Answer-Chromosomes
/.How many chromosomes do humans have? - Answer-46. 23 pairs
/.Gene - Answer-Small segment of DNA that contains all the pairs of
chromosomes
/.When was the double helix discovered? - Answer-1953
/.Who began the Human Genome project? - Answer-Francis S Collins
/.Hereditary information is stored in ______ - Answer-DNA
/.The individual building blocks of DNA are called - Answer-Nucleotides
, /.A DNA molecule consists of two nucleotide strands twisted into a - Answer-double
helix
/.The ___________ of the DNA stands pair in a consistent fashion. - Answer-Bases
/.What is the RNA transcription for the DNA strand 5- GCT ATG CAT CGT - 3 -
Answer-5 - ACG AUG CAU AGC - 3
/.Which template DNA sequence would the short transcript 5- AUC CGU ACG -3 be
derived from? - Answer-5- CGT ACG GAT -3
/.What is the complementary sequence for the following DNA sequence? 5- GCC ATC
TCG AAT -3 - Answer-5- ATT CGA GAT GGC -3
/.Assuming 100% reaction efficiency, how many DNA copies are created after the
completion of four complete PCR cycles? - Answer-16
/.What is the function of DNA polymerase in the process of PCR? - Answer-It
recognizes the primers and uses the available dNTPs to replicate the template
DNA sequence
/.What type of mutation occurs when cytosine is completely mutated to guanin in the
DNA sequence? - Answer-Nonsense
/.When using heat to denature a protein, which force is the first to be disrupted as
temperature increases? - Answer-Hydrophobic interactions
/.Which term describes the order of amino acids in a peptide chain? - Answer-Primary
structure
/.A commonly used technique for protein denaturation is adding an acid or a base to
dramatically change the pH.
Which force is most impacted by this change in pH? - Answer-hydrophobic
interactions
/.In which situation could a body function be disrupted by altering protein structure? -
Answer-A mutation in aconitase blocks an essential step in aerobic metabolism
/.How can an alteration in protein structure lead to a disease state? - Answer-A
mutation replaces an isoleucine with an aspartic acid in a transcription factor
protein, which blocks the normal folding of the protein and its function in the
expression of certain genes.
/.Which structural level shows the greatest difference when comparing denatured
proteins with the normal version of the protein? - Answer-Tertiary
With Complete Solutions
/. DNA is a type of _____________ - Answer-nucleic acid
/.__________ are found in virtually all cells - Answer-Nucleic acids
/.What is the function of nucleic acids? - Answer-To encode heritable information
and pass it on from generation to generation
/.What three things make up nucleotides? - Answer-Phosphate, pentose sugar, and
pyrimidine or purine base
/.What are the four bases in DNA? - Answer-Adenine, guanine, cytosine, and
thymine
/.What are the four bases in RNA? - Answer-Adenine, guanine, cytosine, and uracil
/.How many strands does RNA have? DNA? - Answer-RNA is a single strand, DNA is
double
/.Which base pairs with Adenine? - Answer-Thymine
/.Which base pairs with Guanine? - Answer-Cytosine
/.Where is DNA located? - Answer-In the Nucleus
/.What encases the DNA? - Answer-Chromosomes
/.How many chromosomes do humans have? - Answer-46. 23 pairs
/.Gene - Answer-Small segment of DNA that contains all the pairs of
chromosomes
/.When was the double helix discovered? - Answer-1953
/.Who began the Human Genome project? - Answer-Francis S Collins
/.Hereditary information is stored in ______ - Answer-DNA
/.The individual building blocks of DNA are called - Answer-Nucleotides
, /.A DNA molecule consists of two nucleotide strands twisted into a - Answer-double
helix
/.The ___________ of the DNA stands pair in a consistent fashion. - Answer-Bases
/.What is the RNA transcription for the DNA strand 5- GCT ATG CAT CGT - 3 -
Answer-5 - ACG AUG CAU AGC - 3
/.Which template DNA sequence would the short transcript 5- AUC CGU ACG -3 be
derived from? - Answer-5- CGT ACG GAT -3
/.What is the complementary sequence for the following DNA sequence? 5- GCC ATC
TCG AAT -3 - Answer-5- ATT CGA GAT GGC -3
/.Assuming 100% reaction efficiency, how many DNA copies are created after the
completion of four complete PCR cycles? - Answer-16
/.What is the function of DNA polymerase in the process of PCR? - Answer-It
recognizes the primers and uses the available dNTPs to replicate the template
DNA sequence
/.What type of mutation occurs when cytosine is completely mutated to guanin in the
DNA sequence? - Answer-Nonsense
/.When using heat to denature a protein, which force is the first to be disrupted as
temperature increases? - Answer-Hydrophobic interactions
/.Which term describes the order of amino acids in a peptide chain? - Answer-Primary
structure
/.A commonly used technique for protein denaturation is adding an acid or a base to
dramatically change the pH.
Which force is most impacted by this change in pH? - Answer-hydrophobic
interactions
/.In which situation could a body function be disrupted by altering protein structure? -
Answer-A mutation in aconitase blocks an essential step in aerobic metabolism
/.How can an alteration in protein structure lead to a disease state? - Answer-A
mutation replaces an isoleucine with an aspartic acid in a transcription factor
protein, which blocks the normal folding of the protein and its function in the
expression of certain genes.
/.Which structural level shows the greatest difference when comparing denatured
proteins with the normal version of the protein? - Answer-Tertiary
