Core histone - Samenvattingen, Aantekeningen en Examens

BIOL 1P91 Exam Review Questions With Answers | Updated Chromatids - ANSWER One half of a replicated chromosome. Each chromatid contains one double helix of DNA. binary fission - ANSWER A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size, Prokaryotic cell division—splitting or dividing into two parts Nucleoid - ANSWER The central region of a prokaryotic cell with no boundary membrane separating it from the cytoplasm, ...

Chromatin structure - AnswerNegatively charged DNA loops twice around histone octamer (2 each of the positively charged H2A, H2B, H3, and H4) to form nucleosome bead. H1 ties nucleosomes together in a string. (Think of "beads on a string"; H1 is the only histone that is not in the nucleosome core.) In mitosis, DNA condenses to form mitotic chromosomes. <img src="66a - Euchramatin strxr.JPG" /> Heterochromatin - AnswerCondensed, transcriptionally inactive ("H eteroC hromatin = H igh...

HMX Genetics Exam Questions with Correct Answers Single Nucleotide Variant (SNV) - ANSWER differences in DNA sequence. 46 chromosomes. >1% of population. Common complex traits bp in nucleus - ANSWER 6 billion Chromatin - ANSWER packaged DNA. Composed of DNA helix wound around histone proteins forming nucleosomes. 150 bp of DNA wound around each histone core Amino acid - ANSWER 20 different molecules used to build proteins. Coded by genes. Organic. Contains...

Which process describes cell division in prokaryotic organisms?Answer - binary fission What is the term used to describe about 150 nucleotides of DNA wrapped around a core of histone proteins?Answer - nucleosome Meiotic cell division plays a key role in which biological processes?Answer - sexual reproduction During the G1 phase of the cell cycle, most of the DNA would be in what state of compaction?Answer - 30-nm fiber During telophase of mitosis, how many DNA double helices make...

MMSC 490 Exam 2 Questions and Answers All Correct The genomes of salamanders contain ten times more DNA than the genomes of humans because salamanders - Answer-have more noncoding DNA than humans have. A gene can be defined as a segment of DNA that codes for - Answer-functional product. Introns in mRNA-coding genes are the transcribed sequences - Answer-between protein-coding sequences. In the nucleus, introns are removed from transcripts by - Answer-splicing introns can encode - Ans...

Cell division requires what 3 things? - Answer-1. Replication of genetic material 2. Accurate segregation of genetic material 3. Divison of the cytoplasm between two cells Main difference between prokaryotes + eukaryotes? - Answer-Size and presence of membrane bound nucleus - prokaryotes are smaller, no nucleus / membrane bound organelles What is the term used to describe about 150 nucleotides of DNA wrapped around a core of histone proteins? - Answer-nucleosome Meiotic cell division play...

Karyotype is number and appearance of chromosomes T/F? - Answer-True Euploidy is normal karyotype aneuploidy is abnormal karyotype T/F? - Answer-True central dogma of life: DNA to Protein to RNA T/F? - Answer-False Because of fact like splicing in drosophila 1 gene can produce 38,016 different mRNAs T/F? - Answer-True Nucleosome is a complex of histone core over which DNA is wound 2 times. T/F - Answer-False modifications in histone can lead to cancer T/F? - Answer-True Glucos...

FAU Dr. Brooks - Biological Principles - Unit 3 Comprehensive Study Guide 2024 with complete Solutions What is the cell theory? - Answer- All organisms are made come from cells and are made up of cells Cells must reproduce for what 2 reasons? - Answer- Cells must reproduce either to perpetuate the species or create a multi-celled individual Cell reproduction involves which two processes? - Answer- Cell reproduction involves mitosis (duplication and division of the nucleus) and cytokinesi...

MMSC 490 Exam Question and Answers All Correct Which energy producing process is thought to have come first during cellular evolution - Answer-glycolysis The initial importance of a membrane enclosing self-replicating RNA molecules and associated proteins was that it - Answer-maintained these molecules as a unit capable of reproduction and evolution Mitochondria and chloroplasts resemble bacteria in that they - Answer-have their own DNA have their own ribosomes reproduce by a simple ...

_______ use an internal RNA primer so that the end of the eukaryotic chromosome can be replicated. a. Primases b. RNA polymerases c. Telomerases d. DNA polymerases e. Helicases c. Telomerases A transmembrane sensor kinase protein senses an environmental condition outside __________ bacteria or in the periplasm of a/an __________ bacteria. a. Gram-positive; Gram-negative b. Gram-negative; Gram-positive c. prokaryotic; eukaryotic d. prokaryotic; archaean e. Gram-positive; aci...