Bio-Chem C785 - WGU - Module 1 - all questions, Exam Questions and answers, rated A+

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Bio-Chem C785 - WGU - Module 1 - all questions, Exam Questions and answers, rated A+ DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the new s... trands - ✔✔-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? - ✔✔-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? - ✔✔-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? - ✔✔-Changes in chromatin structure Blood is what type of inheritance? - ✔✔-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? - ✔✔-50% What is the complementary DNA strand for the DNA sequence 5'-ATT CGG GCT CCC - 3' - ✔✔-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? - ✔✔- messenger RNA (mRNA) What is 1 direct effect of inhibiting translation? - ✔✔-the production of proteins would stop How many amino acids, and which ones, would be encoded by the following mRNA sequence: 5'- AUGACUCCCGGG -3' - ✔✔-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. - ✔✔-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? - ✔✔-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? - ✔✔-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 - ✔✔-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) - ✔✔-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? - ✔✔-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? - ✔✔-Nonsense mutation The nonsense mutation that causes Kevin's color blindness could have resulted from a malfunction of - ✔✔-DNA polymeras [Show More]

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