Chromatin Study guides, Revision notes & Summaries

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...

Irene Gold Boards Part 1 Pathology Exam With 100% Correct And Verified Answers. What type of degeneration is this? →calcium infiltration into normal tissue →hypervitaminosis D - Corret Answer-calcification, metastatic What type of degeneration is this? →calcium infiltration into abnormal/damage tissues → atherosclerosis or atheroma →damage to tunica intima - Corret Answer-calcification, dystrophic What type of degeneration is this? →TB - Corret Answer-caseous What type of d...

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...

CTR Exam Prep cell membrane separates the internal structures from the extracellular fluid cytoplasm clear, thick gel containing carbohydrates, lipids, proteins, and other chemicals that surrounds the nucleus in a cell cytosol fluid inside a cell organelles bodies in the cytoplasm that perform specific functions needed for cell survival ribosomes rounded bodies in the cytoplasm composed of protein and RNA; involved in protein synthesis nucleus control center of a ...

MCB EXAM 1 QUESTIONS & ANSWERS 2023/2024 How large is our genome? - ANSWER-3200 million bp How many base pairs does the genome contain? - ANSWER-3 × 10^9 base pairs. How long is the genome when fully extended? - ANSWER-20,000 phone books long What is Chromatin? - ANSWER-the fibrous complex of eukaryotic DNA and histone proteins. Which are the main Histones? - ANSWER-H1, H2A, H2B, H3, and H4. What's the charge (polarity) of Histones? - ANSWER-Positive What amino acid resi...

Exam 1: BIO1201/ BIO 1201 Study Guide (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: Nucleolus: nonmembranous structure involved in production of ribosomes; a nucleus has one or more nucleoli Q: Chromatin Answer: material consisting of DNA and proteins; visible in a dividing cell as individual condensed chromosomes Q: cell wall Answer: outer layer that maintains cell's shape and protects cell from mechanical damage; ma...

CHEM 441A FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS. Instructions: 1. DO NOT begin the exam until instructed to do so. 2. SWITCH OFF your phones. 3. Make sure there is a total of 12 pages. 4. Write your Name AND Exam number (A or B) on your Scantron. 5. When finished, place Exam sheet and Scantron and return all materials to the instructor. Summary of points: 1. Answer on Scantron Section A (Q# 1….60) (60 Points) 2. Answer on the Exam Sheet Section B, C, and D (Q# 61-90) (40 Points...

CHEM 441A FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS. Instructions: 1. DO NOT begin the exam until instructed to do so. 2. SWITCH OFF your phones. 3. Make sure there is a total of 12 pages. 4. Write your Name AND Exam number (A or B) on your Scantron. 5. When finished, place Exam sheet and Scantron and return all materials to the instructor. Summary of points: 1. Answer on Scantron Section A (Q# 1….60) (60 Points) 2. Answer on the Exam Sheet Section B, C, and D (Q# 61-90) (40 Points...

BIOL 2300 Quizzes 1-7 Latest Update Graded A+ DNA is negatively charged because a. the ribose sugars of DNA are positively charged b. the ribose sugars of DNA are negatively charged c. the nitrogenous bases are negatively charged d. the phosphate backbone of DNA is negatively charged e. DNA is not acidic d. the phosphate backbone of DNA is negatively charged DNA replication is a. semi-conservative b. dispersive c. conservative d. error prone a. semi-conservative Define D...

Histones are rich in which 2 amino acids? - correct answerLysine Arginine What histone protein is responsible for binding to the nucleosome and to the "linker" DNA thereby stabilizing the chromatin fiber? - correct answerH1 When does DNA and histone synthesis occur in the cell cycle? - correct answerS-phase Will the following be increased or decreased or neutral in heterochromatin?