Biochemistry WGU Exam Questions
With 100% Answers Solved Correctly
semi conservative - Answer ✔✔- DNA replication is ___________, meaning that each
new duplex has one original (parent) strand and one new strand.
template - Answer ✔✔- Because the two parent strands are separated during replication
and the base pairing is predictable, each parent strand can serve as a
____________for the new strand synthesis.
helicase - Answer ✔✔- unwinds the double stranded DNA to allow for replication, but
this is not a problem for the DNA polymerase.
Nucleotide excision repair - Answer ✔✔- _______________is used to repair deletions,
insertions, and helix-distorting lesions, such as thymine dimers.
complementary strand - Answer ✔✔- a strand of DNA that is the exact match of another
complementary sequence - Answer ✔✔- Nucleic acid base sequences that can form a
double-stranded structure by matching base pairs.
mRNA DNA sequence - Answer ✔✔- The use of U instead of A, starts from right to left.
32 - Answer ✔✔- How many DNA copies after 4 complete PCR cycles?
DNA polymerase - Answer ✔✔- This recognizes the primers and uses the available
dNTPS to replicate the template DNA sequence.
nonsense mutation - Answer ✔✔-
missense mutation - Answer ✔✔-
frameshift mutation - Answer ✔✔-
silent mutation - Answer ✔✔-
x linked recessive - Answer ✔✔-
autosomal dominant - Answer ✔✔-
autosomal recessive - Answer ✔✔-
, x linked dominant - Answer ✔✔-
SIRT1, SIRT2 - Answer ✔✔- associated with chronic exposure to cocaine and drug
addiction, the nucleosomes become widely spaced.
alternative splicing of mRNA - Answer ✔✔- Alternative combination of exons within the
same
gene are linked together.
base excision repair - Answer ✔✔- -nucleotide is cut out and replaced with correct
nucleotide
recombination - Answer ✔✔- the exchange of genetic material between homologous
chromosomes, resulting from a cross-over event
nucleotide excision repair - Answer ✔✔- a nuclease cuts out and replaces damaged
stretches of DNA
mismatch repair - Answer ✔✔- the cellular process that uses specific enzymes to
remove and replace incorrectly paired nucleotides
xeroderma pigmentosum - Answer ✔✔-
amino group - Answer ✔✔-
carboxyl group - Answer ✔✔-
side chain - Answer ✔✔-
alpha carbon - Answer ✔✔-
hydrogen bond - Answer ✔✔-
ionic bond - Answer ✔✔-
hydrophobic effect - Answer ✔✔- The ______ is the primary "force" of protein structural
stabilization.
hydrogen bonding - Answer ✔✔- bond connecting the nitrogenous bases (A, T, G, C)
electrostatic interactions - Answer ✔✔- What binds the enzyme and substrate with the
active site?
(hint: type of interaction)
With 100% Answers Solved Correctly
semi conservative - Answer ✔✔- DNA replication is ___________, meaning that each
new duplex has one original (parent) strand and one new strand.
template - Answer ✔✔- Because the two parent strands are separated during replication
and the base pairing is predictable, each parent strand can serve as a
____________for the new strand synthesis.
helicase - Answer ✔✔- unwinds the double stranded DNA to allow for replication, but
this is not a problem for the DNA polymerase.
Nucleotide excision repair - Answer ✔✔- _______________is used to repair deletions,
insertions, and helix-distorting lesions, such as thymine dimers.
complementary strand - Answer ✔✔- a strand of DNA that is the exact match of another
complementary sequence - Answer ✔✔- Nucleic acid base sequences that can form a
double-stranded structure by matching base pairs.
mRNA DNA sequence - Answer ✔✔- The use of U instead of A, starts from right to left.
32 - Answer ✔✔- How many DNA copies after 4 complete PCR cycles?
DNA polymerase - Answer ✔✔- This recognizes the primers and uses the available
dNTPS to replicate the template DNA sequence.
nonsense mutation - Answer ✔✔-
missense mutation - Answer ✔✔-
frameshift mutation - Answer ✔✔-
silent mutation - Answer ✔✔-
x linked recessive - Answer ✔✔-
autosomal dominant - Answer ✔✔-
autosomal recessive - Answer ✔✔-
, x linked dominant - Answer ✔✔-
SIRT1, SIRT2 - Answer ✔✔- associated with chronic exposure to cocaine and drug
addiction, the nucleosomes become widely spaced.
alternative splicing of mRNA - Answer ✔✔- Alternative combination of exons within the
same
gene are linked together.
base excision repair - Answer ✔✔- -nucleotide is cut out and replaced with correct
nucleotide
recombination - Answer ✔✔- the exchange of genetic material between homologous
chromosomes, resulting from a cross-over event
nucleotide excision repair - Answer ✔✔- a nuclease cuts out and replaces damaged
stretches of DNA
mismatch repair - Answer ✔✔- the cellular process that uses specific enzymes to
remove and replace incorrectly paired nucleotides
xeroderma pigmentosum - Answer ✔✔-
amino group - Answer ✔✔-
carboxyl group - Answer ✔✔-
side chain - Answer ✔✔-
alpha carbon - Answer ✔✔-
hydrogen bond - Answer ✔✔-
ionic bond - Answer ✔✔-
hydrophobic effect - Answer ✔✔- The ______ is the primary "force" of protein structural
stabilization.
hydrogen bonding - Answer ✔✔- bond connecting the nitrogenous bases (A, T, G, C)
electrostatic interactions - Answer ✔✔- What binds the enzyme and substrate with the
active site?
(hint: type of interaction)
