Heterochromatin Study guides, Class notes & Summaries

Eukaryote correct answersAn organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure thats sets them apart from prokaryotic cells is the nucleas or nuclear envelope within which the genetic material is carried. All species of large complex species are eukaryotes, including animals, plants and funghi. Euchromatin correct answersThis shows as pale areas in the nucleas under electro magnification. It is a less densly packed form of chromati...

ETS MAJOR FIELD TEST IN BIOLOGY 2024 QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED AND VERIFIED Pyrimidine dimers formed in DNA due to UV radiation can be repaired by? SOS repair Double strand break repair Mismatch repair Photoreactivation repair (nucleotide excision repair) Base excision repair - CORRECT ANSWER Photoreactivation repair (nucleotide excision repair) Which of the following repair mechanisms uses methyl groups to distinguish between parental and daughter strands? Ans...

USABO EXAM QUESTIONS AND ANSWERS Eukaryote - ANS An organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure that sets them apart from prokaryotic cells is the nucleus or nuclear envelope within which the genetic material is carried. All large complex species are eukaryotes, including animals, plants and fungi. Euchromatin - ANS This shows as pale areas in the nucleus under electro magnification. It is a less densely packed for...

Biochemistry Section-USMLE Step 1 2024 Questions and Answers which histone ties DNA-histone nucleosome beads into more condensed structures? - answerH1 is DNA acidic or basic? - answeracidic what type of aa are histones made of? are they acidic or basic? - answerlysine and arginine; basic is heterochromatic more accessible or less accessible to TF? euchromatin? - answerless; more if a cell has a hyperchromatic or condensed nucleus is it undergoing transcription etc? - answerno what ar...

MCB Exam 1 Review Questions & Answers 2023/2024 1. Highly condensed chromatin that is transcriptionally inactive is called - ANSWER-Heterochromatin 1. If you were to make a synthetic form of DNA in which the phosphate group is substituted by a chemical group exhibiting a net positive charge, the resulting synthetic DNA" - ANSWER-Would likely not be packaged by histones The major structural proteins in human chromatin are known as - ANSWER-histones The main function of the centrome...

Biology 1406 Exam 3 Questions and Answers Rated A+ Cell division is used for which of the following ? Reproduction of single-celled organisms, growth of multicellular organisms, repair and replacement of cells, and sperm and egg production Asexual and sexual reproduction differs in that sexual reproduction_____________ Can produce great variation among the offspring (Meiosis) Asexual Reproduction ____________ Produces offspring genetically identical to the parent (Mitosis) Mos...

USABO Latest Update with Verified Solutions Eukaryote An organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure thats sets them apart from prokaryotic cells is the nucleas or nuclear envelope within which the genetic material is carried. All species of large complex species are eukaryotes, including animals, plants and funghi. Euchromatin This shows as pale areas in the nucleas under electro magnification. It is a less densly...

histones are rich in which 2 AA's - correct answer lysine & argenine Barr bodies (what, type of chromatin) - correct answer inactive X chromosomes heterochromatin (highly condensed, sterically inaccessible) less condensed, transcriptionally active, sterically accessible chromatin - correct answer euchromatin DNA methylation at CpG islands - correct answer represses transcription "CpG Methylation makes DNA Mute" DNA methylation (what is methylated and why?) - correct answer tem...

Biology 1406 Exam #3Cell division is used for which of the following? - correct answer Reproduction of single-celled organisms, growth of multicellular organisms, repair and replacement of cells, and sperm and egg production Asexual and sexual reproduction differs in that sexual reproduction_____________ - correct answer Can produce great variation among the offspring (Meiosis) Asexual Reproduction ____________ - correct answer Produces offspring genetically identical to the parent (Mitosi...

which histone ties DNA-histone nucleosome beads into more condensed structures? - Answer-H1 is DNA acidic or basic? - Answer-acidic what type of aa are histones made of? are they acidic or basic? - Answer-lysine and arginine; basic is heterochromatic more accessible or less accessible to TF? euchromatin? - Answer-less; more if a cell has a hyperchromatic or condensed nucleus is it undergoing transcription etc? - Answer-no what are chromosomes? during what part of the cell cycle ar...