Nucleosome structure - Study guides, Class notes & Summaries

Test Bank For Lehninger Principles of Biochemistry 6th Edition By Favid L. Nelson, Micheal M. Cox| All Chapters| Complete Questions and Answers (LATEST VERSION). Chapter Chapter 1 1 The Foundations Foundations of of Biochemistry Biochemistry Multiple Choice Questions 1. Cellular foundations Cellular foundations Pages: 33-4 DDiffffiicculttyy: 11 Anns: : CC In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. cell membrane. C) nucleoid. D) nucleus. E) ribosomes. ri...

Aminoacyl-tRNA syntheses are enzymes that.... correct answers attach amino acids to specific transfer RNAs Which of the following statements about introns is true? correct answers Some types of organisms generally do not have introns The primary function of factor EF-G is to... correct answers move the peptide-tRNA from the A site of the ribosome In bacteria, mRNAs are.... correct answers transcribed and translated simultaneously The combined sizes of prokaryotic and eukaryotic ribos...

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...

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...

____ nucleotide pair length of DNA is present in a eukaryal nucleosome and ______ pair length of DNA is present in archaeal nucleosome - 160; 60 A characteristic that is unique to the domain Archaea is... a) a single, circular chromosome. b) DNA polymerase that is associated with the nucleoid. c) the ability to survive in extreme environments, like thermal springs. d) a cell membrane constructed from isoprene lipids. e) The presence of L-amino acids in the cell wall. - d) a cell membrane ...

Which level of protein structure is disrupted through the hydrolysis of peptide bonds? Quaternary Tertiary Primary Secondary - ANSWER Primary The primary structure of a protein is the sequence of amino acids held together by peptide bonds. Peptide bonds are formed by dehydration reactions and disrupted by hydrolysis. A mutation in the beta-hemoglobin gene, which results in the replacement of the amino acid glutamate in position 6 with the amino acid valine, leads to the develop...

Helix Review Exam 2 Questions & Answers 2024/2025 A leucine zipper is composed of two dimerized alpha helices. Hydrogen bonding WITHIN each alpha helix is an example of which of the following? a. primary structure b. quaternary structure c. tertiary structure d. secondary structure - ANSWERSd. secondary structure The octameric histone core is composed of four different histone proteins, assembled in a stepwise manner. Once the core octamer has been formed, DNA wraps around it to form...

BCHM 218 Exam Questions and Answers 100% Pass Chromatin is composed of: - Correct Answer️️ -DNA and protein Of the proteins associated with chromatin, which of the following represents the largest component? - Correct Answer️️ -Histones The first evidence for nucleosome formation came from digesting chromosomal DNA with a non-specific nuclease. Gel electrophoresis of the DNA after the reaction revealed: - Correct Answer️️ -A large band corresponding to 200bp Each nucleosome c...

Overall organizational structure of the human chromosome - correct answer normally contain a single, immensely long DNA double helix; to avoid tangling and to manage the long chain efficiently they are complexed with various proteins and sometimes noncoding RNAs to form chromatin that undergoes different levels of coiling and compaction Chromatin - correct answer the structure of DNA complexes with pro...

Nucleic Acid grows by attachment of 5' phosphate group of the incoming nucleotide to the 3'hydroxyl group of the last nucleotide double stranded DNA most energetically favorable state for DNA Purines double-ring structure Adenine (A) + Guanine (G) Pyrimidine single-ring structure Uracil (U)+ Cytosine Messenger RNA (mRNA) -template for all protein synthesis -encode all information necessary to produce proteins Heterogeneous nuclear RNA primary product o...