WGU BIOCHEM READINESS CHECK|QUESTIONS WITH CORRECT ANSWERS

What is the complementary sequence to 3' CAG TAA CAA 5'? Correct Answer 3'TTG TTA CTG5' Coding DNA and mRNA non-complementary and parallel Correct Answer coding- 3'TACGTTAAC5' mRNA- 5'CAAUUGCAU5' template DNA and mRNA complementary and antiparellel Correct Answer template- 5' AGT TAT AAC 3' mRNA- 5'GUUAUAACU3' Which ingredients/molecules are required to set up a polymerase chain reaction? Correct Answer DNA polymerase, DNA nucleotides, template DNA, DNA primers Assuming 100% reaction efficiency, how many DNA copies will be produced after 5 PCR cycles, if we begin with 1 DNA template Correct Answer 32 The LEP gene codes for an anorexigenic hormone. Interestingly, breastfeeding has been shown to alter methylation of the promoter of this gene, leading to increased LEP expression. What is likely happening in response to breastfeeding? Correct Answer Breastfeeding decreases the methylation of the promoter of the LEP gene, increasing the spacing between nucleosomes Rett syndrome is a brain disorder that occurs almost exclusively in females, causing severe deficits in language, learning, coordination and other brain functions. Decreased expression of the MECP2 gene causes Rett syndrome. Which of the following scenarios correctly describes how Rett syndrome could be developed? Correct Answer transcription factors are unable to bind to the transcription start site of the MECP2 gene because the nucleosomes are tightly packed together