WGU BIOCHEMISTRY LATEST
QUESTIONS AND ANSWERS (100 %
CORRECT ANSWERS) ||2025-2026
GRADED A+
DNA is a type of _____________ -CORRECTANSWER nucleic acid
__________ are found in virtually all cells -CORRECTANSWER Nucleic acids
What is the function of nucleic acids? -CORRECTANSWER To encode heritable
information and pass it on from generation to generation
What three things make up nucleotides? -CORRECTANSWER Phosphate, pentose
sugar, and pyrimidine or purine base
What are the four bases in DNA? -CORRECTANSWER Adenine, guanine, cytosine,
and thymine
What are the four bases in RNA? -CORRECTANSWER Adenine, guanine, cytosine,
and uracil
How many strands does RNA have? DNA? -CORRECTANSWER RNA is a single
strand, DNA is double
Which base pairs with Adenine? -CORRECTANSWER Thymine
Which base pairs with Guanine? -CORRECTANSWER Cytosine
Where is DNA located? -CORRECTANSWER In the Nucleus
What encases the DNA? -CORRECTANSWER Chromosomes
How many chromosomes do humans have? -CORRECTANSWER 46. 23 pairs
Gene -CORRECTANSWER Small segment of DNA that contains all the pairs of
chromosomes
When was the double helix discovered? -CORRECTANSWER 1953
Who began the Human Genome project? -CORRECTANSWER Francis S Collins
, Hereditary information is stored in ______ -CORRECTANSWER DNA
The individual building blocks of DNA are called -CORRECTANSWER Nucleotides
A DNA molecule consists of two nucleotide strands twisted into a -CORRECTANSWER
double helix
The ___________ of the DNA stands pair in a consistent fashion. -CORRECTANSWER
Bases
What is the RNA transcription for the DNA strand 5- GCT ATG CAT CGT - 3 -
CORRECTANSWER 5 - ACG AUG CAU AGC - 3
Which template DNA sequence would the short transcript 5- AUC CGU ACG -3 be
derived from? -CORRECTANSWER 5- CGT ACG GAT -3
What is the complementary sequence for the following DNA sequence? 5- GCC ATC
TCG AAT -3 -CORRECTANSWER 5- ATT CGA GAT GGC -3
Assuming 100% reaction efficiency, how many DNA copies are created after the
completion of four complete PCR cycles? -CORRECTANSWER 16
What is the function of DNA polymerase in the process of PCR? -CORRECTANSWER
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? -CORRECTANSWER Nonsense
When using heat to denature a protein, which force is the first to be disrupted as
temperature increases? -CORRECTANSWER Hydrophobic interactions
Which term describes the order of amino acids in a peptide chain? -
CORRECTANSWER 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? -CORRECTANSWER hydrophobic
interactions
In which situation could a body function be disrupted by altering protein structure? -
CORRECTANSWER A mutation in aconitase blocks an essential step in aerobic
metabolism
QUESTIONS AND ANSWERS (100 %
CORRECT ANSWERS) ||2025-2026
GRADED A+
DNA is a type of _____________ -CORRECTANSWER nucleic acid
__________ are found in virtually all cells -CORRECTANSWER Nucleic acids
What is the function of nucleic acids? -CORRECTANSWER To encode heritable
information and pass it on from generation to generation
What three things make up nucleotides? -CORRECTANSWER Phosphate, pentose
sugar, and pyrimidine or purine base
What are the four bases in DNA? -CORRECTANSWER Adenine, guanine, cytosine,
and thymine
What are the four bases in RNA? -CORRECTANSWER Adenine, guanine, cytosine,
and uracil
How many strands does RNA have? DNA? -CORRECTANSWER RNA is a single
strand, DNA is double
Which base pairs with Adenine? -CORRECTANSWER Thymine
Which base pairs with Guanine? -CORRECTANSWER Cytosine
Where is DNA located? -CORRECTANSWER In the Nucleus
What encases the DNA? -CORRECTANSWER Chromosomes
How many chromosomes do humans have? -CORRECTANSWER 46. 23 pairs
Gene -CORRECTANSWER Small segment of DNA that contains all the pairs of
chromosomes
When was the double helix discovered? -CORRECTANSWER 1953
Who began the Human Genome project? -CORRECTANSWER Francis S Collins
, Hereditary information is stored in ______ -CORRECTANSWER DNA
The individual building blocks of DNA are called -CORRECTANSWER Nucleotides
A DNA molecule consists of two nucleotide strands twisted into a -CORRECTANSWER
double helix
The ___________ of the DNA stands pair in a consistent fashion. -CORRECTANSWER
Bases
What is the RNA transcription for the DNA strand 5- GCT ATG CAT CGT - 3 -
CORRECTANSWER 5 - ACG AUG CAU AGC - 3
Which template DNA sequence would the short transcript 5- AUC CGU ACG -3 be
derived from? -CORRECTANSWER 5- CGT ACG GAT -3
What is the complementary sequence for the following DNA sequence? 5- GCC ATC
TCG AAT -3 -CORRECTANSWER 5- ATT CGA GAT GGC -3
Assuming 100% reaction efficiency, how many DNA copies are created after the
completion of four complete PCR cycles? -CORRECTANSWER 16
What is the function of DNA polymerase in the process of PCR? -CORRECTANSWER
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? -CORRECTANSWER Nonsense
When using heat to denature a protein, which force is the first to be disrupted as
temperature increases? -CORRECTANSWER Hydrophobic interactions
Which term describes the order of amino acids in a peptide chain? -
CORRECTANSWER 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? -CORRECTANSWER hydrophobic
interactions
In which situation could a body function be disrupted by altering protein structure? -
CORRECTANSWER A mutation in aconitase blocks an essential step in aerobic
metabolism
