Epigenetic modifications Study guides, Class notes & Summaries

NR507 2023 Midterm Exam Questions with Correct Answers Epigenetics - ANSWER heritable alterations that are not due to changes in DNA sequence epigenetic modifications, or "tags," such as DNA methylation and histone modification - ANSWER alter DNA accessibility and chromatin structure, thereby regulating patterns of gene expression. histone modifications - ANSWER A histone modification is a covalent post-translational modification (PTM) to histone proteins whi...

NR507 Midterm Test Questions with Complete Solutions What is epigenetics? - ANSWER The study of heritable changes in gene expression or phenotype casued by mechanisms *other* than changes in DNA sequences. DNA methylation - ANSWER The attachment of a methyl group to a cytosine base is followed by a guanine base...causes a gene to become transcriptionally inactive or silent. Epigenetic processes play a major role in cancer initiation, progression, and treatment. Evidence: 20% of people ...

NR507 Midterm Test Questions with Complete Solutions What is epigenetics? - ANSWER The study of heritable changes in gene expression or phenotype casued by mechanisms *other* than changes in DNA sequences. DNA methylation - ANSWER The attachment of a methyl group to a cytosine base is followed by a guanine base...causes a gene to become transcriptionally inactive or silent. Epigenetic processes play a major role in cancer initiation, progression, and treatmen...

Final Exam Advanced Pathophysiology, Pathophysiology Finals Questions And Answers 2024physiologic jaundice - correct answer-A 3-day old infant is noted to have a mildly elevated unconjugated bilirubin level and icterus. Your concern is that this child may have: a. physiologic jaundice b. kernicterus c. glucose-6-phosphate dehydrogenase deficiency d. pathologic jaundice Lysosomes - correct answer-Which cell component is capable of cellular autodigestion when it is released during cell inju...

DNA replication is semiconservative, meaning that each new duplex has one original (parent) strand and one new strand. Because the two parent strands are separated during replication and the base pairing is predictable, each parent strand can serve as a template for the new strand synthesis. DNA replication is ___________, which allows each of the two strands to serve as a _______ for the new strands. b. semiconservative, template Helicase unwinds the double stranded DNA to allow for ...

DNA replication is semiconservative, meaning that each new duplex has one original (parent) strand and one new strand. Because the two parent strands are separated during replication and the base pairing is predictable, each parent strand can serve as a template for the new strand synthesis. correct answers DNA replication is ___________, which allows each of the two strands to serve as a _______ for the new strands. b. semiconservative, template Helicase unwinds the double stranded DNA to...

Public health prevention and control final exam questions and answers Graded A Diseases or conditions present at birth are called: -Answer-congenital social determinants contextualize risk in that -Answer-risk is about health status and trends public health programs that aim to reduce health risk among a wide population (such as promoting physical activity) are: -Answer-primary prevention population risk tolerance can change due to -Answer-perceived risk relativity the number of existin...

NR 507 Week 4 Midterm Exam Practice Questions and Answers Defects in the encoding of histone-modifying proteins 1. Housekeeping Genes are vital to the function and maintenance of all the body’s cells. What characteristic is … with these genes? 2. Mutations in the encoding of histone modifying proteins … shown to influence the development of what congenital condition? 3. Epigenetics refers to chemical modification that are made to what? 4. Signals to change or modify epigenet...

MULTIPLE CHOICE 1. What genetic process is likely responsible for the occurrence of asthma in only one of a pair of identical twins? a. Epigenetic modifications b. Genomic imprinting c. Transgenerational inheritance d. Methylation ANS: A Epigenetic modifications can cause individuals with the same deoxyribonucleic acid (DNA) sequences (such as identical twins) to have different disease profiles. Imprinting means that either the copy of a gene inherited through the sperm or th...

What is the first mRNA processing step? - ANSWER 5' capping Different mRNAs are made from the same initial pre-mRNA by ________. - ANSWER alternative splicing RNA transcription begins at a ________. - ANSWER promoter ________ protect(s) the pre-mRNA molecule. - ANSWER the 3' poly-a tail The process of pre-mRNA splicing removes ________. - ANSWER introns Spliced ________ differ in their exons. - ANSWER mRNAs Identify the three phases of transcription. - ANSWER initiation, elongation, te...