What is a histone - Study guides, Class notes & Summaries

7Q1-Describe the double helix nature of DNA. Why is it that DNA is always found as a double stranded, antiparallel and complementary molecule? Correct Answer-The two strands of DNA run in anti-parallel directions and attached to each sugar is one of four types of nitrogenous bases, which make hydrogen bonds. It is antiparallel and complementary so that it has two copies as a safety measure. 7Q2-What are histones and the structural components(DNA/proteins)of a nucleosome? Correct Answer-Histon...

BIO 116 Final Exam Questions And Answers With Verified Study Solutions The transcription of what molecule is similar to leading strand synthesis in DNA replication? A) mRNA B) tRNA C) rRNA D) Primer E) Ribosomes A What statement regarding prokaryotic and prokaryotic chromosomes is incorrect? A) Most bacteria have a single, circular chromosome, while prokaryotic chromosomes can occur singly or in pairs. B) Prokaryotic chromosomes are located in the nucleus, which the prokaryotic chromos...

Test Bank for Huether and McCance's Understanding Pathophysiology, Canadian Edition, 2nd Edition by Kelly Power, Stephanie Zettel, , Mohamed Toufic El-Hussein Table of Contents PART ONE: BASIC CONCEPTS OF PATHOPHYSIOLOGY Unit 1: The Cell 1. Cellular Biology 2. Genes and Genetic Diseases 3. Epigenetics and Disease 4. Altered Cellular and Tissue Biology 5. Fluids and Electrolytes, Acids and Bases Unit 2: Mechanisms of Self-Defense 6. Innate Immunity: Inflammation and Wound Healing ...

MB (ASCP) Exam QUESTIONS & ANSWERS 2023 ( A+ GRADED 100% VERIFIED)

CBE 555"Which of the following statements are correct? Explain your answers. A. A DNA strand has a polarity because its two ends contain different bases. B. G-C base pairs are more stable than A-T base pairs." - correct answer "A. False. The polarity of a DNA strand usually refers to the orientation of its sugar-phosphate backbone: one end contains a phosphate group, the other end contains a hydroxyl group. B. True. G-C: 3 H-bonds vs A-T: only 2 H-bonds " "Histone proteins are among t...

Histones are rich in what AAs? - ANSWER ☑☑Lysine and arginine (both + charge) When does histone synthesis occur? - ANSWER ☑☑S phase (along with DNA getting synthesized) Heterochromatin is _________, euchromatin is _________ - ANSWER ☑☑Inactive/condensed; active/accessible What allows mismatch repair enzymes to distinguish between old and new DNA strands in prokaryotes? - ANSWER ☑☑Methylation; old/template strands are methylated, new/daughter strands are unmethylated ...

What is a histone? A. A protein found in prokaryotic cell nuclei that facilitates transport of DNA from inside the nucleus to the cytoplasm. B. A protein found in eukaryotic cell nuclei that package and order the DNA into structural units called nucleosomes. C. A protein found in eukaryotic cell nuclei that facilitates transport of DNA from inside the nucleus to the cytoplasm. D. A protein found in prokaryotic cell nuclei that package and order the DNA into structural units called nu...

MICR 3033 Exam 2 Questions with Revised Answers Graded A+ 7Q1-How does DNA interact with the core histone nucleosome? - Answer-DNA wraps around the core histone 7Q2-What is the length(fixed)of DNA(in base pairs) that wraps around a core nucleosome? - Answer-147 base pairs 7Q3-What is the 30-nm fiber structure in chromatin? - Answer-solenoid 7Q4-What is meant by the terms Chromatin? Euchromatin? and Heterochromatin? - Answer-Heterochromatin is condensed chromatin which makes it inactiv...

Predominant form of DNA - Right-handed B DNA and histone interaction is due to what type of bond? - Ionic What stains to the minor groove of DNA duplex? - SYBR Green What is the most abundant type of RNA? - Ribosomal RNA (rRNA) What does RNA act as in a retrovirus? - Genome and mRNA What increases half-life of mRNA? - 5' Methyl Cap What kind of DNA is most likely to be transcriptionally active? - Euchromatin What is the most common type of eukaryotic DNA? - Satellite DNA What specimen h...

Apoptosis ~:- A programmed cell death that is regulated or programmed. Cellular selfdestruction for elimination or unwanted cell populations Necrosis ~:- Rapid loss of the plasma membrane structure, organelle swelling, mitochondria dysfunction What is the #1 cause of cellular injury leading to necrosis (especially the kidney and heart) ~:- hypoxia What is the #1 cause of hypoxia? ~:- ischemia Main component of a cell 1 | P a g e | © copyright 2024/2025 | Grade A+ Master01 | Septe...