WGU C785 BIOCHEMISTRY ALL MODULE 1 QUESTIONS AND
ANSWERS 2022/2023 UPDATE
DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the
new strands (correct answers)true
Recall that the DNA polymerase must bind a double-stranded polymer before it can start making its own
DNA polymer. What helps the DNA polymerase to overcome this problem in DNA replication? (correct
answers)RNA primers
Several components of cigarette smoke, including benzopyrene, insert themselves into the DNA and
lead to several types of mutations such as frameshift mutations, including both insertions and deletion.
Which repair pathway would be used to repair this type of damage? (correct answers)Nucleotide
Excision Repair
Maternal smoking during pregnancy is hazardous yet common in many places. Many studies have
associated prenatal smoking to unhealthy physical and psychological outcomes for the baby.
Researchers know that maternal smoking affects are epigenetic in nature. Which event can be
considered epigenetic in nature? (correct answers)Changes in chromatin structure
Blood is what type of inheritance? (correct answers)codominance
What is the probability that a child will have an autosomal dominant disease if their father is
heterozygous for the allele and their mother is homozygous for the normal allelle? (correct answers)50%
What is the complementary DNA strand for the DNA sequence 5'-ATT CGG GCT CCC - 3' (correct
answers)5'- GGG AGC CCG AAT - 3'
A research scientist is trying to create a new strain of bacteria that can produce a protein needed for her
research. What molecule will act as a template in creating the new protein? (correct answers)messenger
RNA (mRNA)
, What is 1 direct effect of inhibiting translation? (correct answers)the production of proteins would stop
How many amino acids, and which ones, would be encoded by the following mRNA sequence: 5'-
AUGACUCCCGGG -3' (correct answers)4: MET, THR, PRO, GLY
Promoters are DNA sequences near the start of a gene that are recognized by transcription factors
which recruit RNA polymerase to that gene for expression. This is an important aspect of transcriptions
but not part of the mRNA processing. (correct answers)true
You are designing a piece of DNA for a project and must select the appropriate nitrogenous bases.
Which combination of nitrogenous bases would you find most suitable for your work? (correct
answers)Adenine, Guanine, Thymine, Cytosine
The DNA sequence is 3'-ATGATCCTT-5' is part of the template strand during DNA replication. What is the
correct sequence for the newly made DNA? (correct answers)5'-TACTAGGAA-3'
RNA nucleotides include the bases A, U, C, and G. RNA is single stranded and contains a ribose sugar in
the sugar-phosphate backbone. There are several types of RNA in the cell, including mRNA, rRNA, and
tRNA (correct answers)true
What would be the resulting mRNA sequence? Kevin's opsin gene at nucleotide positions 936 to 941: 5'-
GCCTAG-3' (coding strand) and 3'-CGGATC-5' (template strand) (correct answers)The sequence is the
same as the coding: 5'-CGGUAG-3'
The gene for blue opsin protein is located on chromosome 7, a non-sex chromosome. What kind of
inheritance pattern would you expect to see with color blindness due to mutate blue opsin? (correct
answers)an equal distribution of color blindness between males and females
ANSWERS 2022/2023 UPDATE
DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the
new strands (correct answers)true
Recall that the DNA polymerase must bind a double-stranded polymer before it can start making its own
DNA polymer. What helps the DNA polymerase to overcome this problem in DNA replication? (correct
answers)RNA primers
Several components of cigarette smoke, including benzopyrene, insert themselves into the DNA and
lead to several types of mutations such as frameshift mutations, including both insertions and deletion.
Which repair pathway would be used to repair this type of damage? (correct answers)Nucleotide
Excision Repair
Maternal smoking during pregnancy is hazardous yet common in many places. Many studies have
associated prenatal smoking to unhealthy physical and psychological outcomes for the baby.
Researchers know that maternal smoking affects are epigenetic in nature. Which event can be
considered epigenetic in nature? (correct answers)Changes in chromatin structure
Blood is what type of inheritance? (correct answers)codominance
What is the probability that a child will have an autosomal dominant disease if their father is
heterozygous for the allele and their mother is homozygous for the normal allelle? (correct answers)50%
What is the complementary DNA strand for the DNA sequence 5'-ATT CGG GCT CCC - 3' (correct
answers)5'- GGG AGC CCG AAT - 3'
A research scientist is trying to create a new strain of bacteria that can produce a protein needed for her
research. What molecule will act as a template in creating the new protein? (correct answers)messenger
RNA (mRNA)
, What is 1 direct effect of inhibiting translation? (correct answers)the production of proteins would stop
How many amino acids, and which ones, would be encoded by the following mRNA sequence: 5'-
AUGACUCCCGGG -3' (correct answers)4: MET, THR, PRO, GLY
Promoters are DNA sequences near the start of a gene that are recognized by transcription factors
which recruit RNA polymerase to that gene for expression. This is an important aspect of transcriptions
but not part of the mRNA processing. (correct answers)true
You are designing a piece of DNA for a project and must select the appropriate nitrogenous bases.
Which combination of nitrogenous bases would you find most suitable for your work? (correct
answers)Adenine, Guanine, Thymine, Cytosine
The DNA sequence is 3'-ATGATCCTT-5' is part of the template strand during DNA replication. What is the
correct sequence for the newly made DNA? (correct answers)5'-TACTAGGAA-3'
RNA nucleotides include the bases A, U, C, and G. RNA is single stranded and contains a ribose sugar in
the sugar-phosphate backbone. There are several types of RNA in the cell, including mRNA, rRNA, and
tRNA (correct answers)true
What would be the resulting mRNA sequence? Kevin's opsin gene at nucleotide positions 936 to 941: 5'-
GCCTAG-3' (coding strand) and 3'-CGGATC-5' (template strand) (correct answers)The sequence is the
same as the coding: 5'-CGGUAG-3'
The gene for blue opsin protein is located on chromosome 7, a non-sex chromosome. What kind of
inheritance pattern would you expect to see with color blindness due to mutate blue opsin? (correct
answers)an equal distribution of color blindness between males and females
