BioChem C785 - WGU - Module 1 - all questions with complete solution

BioChem C785 - WGU - Module 1 - all questions with complete solution DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the new strands Correct Answer- 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 Answer- 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 Answer- 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 Answer- Changes in chromatin structure Blood is what type of inheritance? Correct Answer- 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 Answer- 50% What is the complementary DNA strand for the DNA sequence 5'-ATT CGG GCT CCC - 3' Correct Answer- 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 Answer- messenger RNA (mRNA) What is 1 direct effect of inhibiting translation? Correct Answer- 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 Answer- 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 Answer- 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 Answer- 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 Answer- 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 Answer- 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 Answer- 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 Answer- an equal distribution of color blindness between males and females In Kevin's case, a specific kind of mutation in the opsin gene resulted in the premature termination of the translation process. This resulted in shorter opsin protein than usual. What specific mutation could have caused this? Correct Answer- Nonsense mutation The nonsense mutation that causes Kevin'