Heterochromatin Study guides, Class notes & Summaries
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Biology 1406 Exam 3 Midterm Exam With Solved Solutions 2024.
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Cell division is used for which of the following ? - 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_____________ - Answer Can produce great variation among the offspring (Meiosis) 
 
Asexual Reproduction ____________ - Answer Produces offspring genetically identical to the parent (Mitosis) 
 
Most of the time, DNA is in the...
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BIOMG 2800 UPDATED Exam Questions and CORRECT Answers
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histones - proteins that DNA wraps around to form chromatin and chromosomes 
condensins - protein complexes that form rings around DNA, organizing chromosomes 
into loops 
chromatin - any complex of DNA and protein found in a nucleus of a cell 
nucleosomes - structure that forms by winding of DNA around histones, resemble 
beads on a string 
heterochromatin - tightly condensed so no room for transcription factors so no 
expression 
euchromatin - relaxed so room for transcription factors so ex...
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MCB EXAM 1 REVIEW
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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 centromere is to - Answer-Allow the proper distribution of ch...
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Evo exam study set 3 (100% Errorless answers)
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What is a megabase (Mb)? correct answers 1 million bases 
 
Is there generally a difference in the amounts of DNA when comparing the genome sizes of viruses --> prokaryotes --> eukaryotes? How does this comparison relate to complexity of these organisms? Be careful. correct answers viruses < prokaryotes < eukaryotes 
 
genome sizes does not correlate with complexity, just because an organism has a bigger genome size does not make it more complex. 
 
Eukaryotes can differ dramatically...
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AGRC1041 (All Solved)
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Heterochromatin correct answers form of DNA - tightly coiled, usually peripherally placed in the nucleus, dark-staining, inactive - not involved in RNA synthesis 
 
Euchromatin correct answers form of DNA - partially/fully uncoiled, centrally placed, light staining, active - involved in RNA synthesis 
 
Basophilic correct answers stains readily with basic dyes (e.g haemotoxylin is a basic dye that stains the nucleus - which is basophilic - blue/purple) 
 
Nuclear envelope correct answers double-...
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USLME Biochem - First Aid Exam Questions With Accurate Answers.
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USLME Biochem - First Aid Exam 
Questions With Accurate Answers. 
Chromatin structure - answerDNA exists in condensed chromatin form in order to fit in 
nucleus 
Negatively charged DNA loops twice around positively charged histone octamer (2 sets of H2A, 
H2B, H3 and H4) to form nucleosome "bead" 
Octomer subunits consist primarily of lysine and arginine amino acids (positively charged). 
H1 ties nucleosome beads together in a string 
Heterochromatin - answerCondensed, transciptionally inactiv...
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Cell Bio PCB 3023 - Exam 1 Questions And Answers With 100% Correct Answers
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Heterochromatin - Regions in chromosome where fibers are highly condensed 
Few genes - resistant to transcription by not completely exempt 
Concentrated in centromeres and telomeres 
What is a simple genome and which type of cell has one? - Codes for fewer proteins then a 
complex genome, prokaryotes 
Plant cell walls were.... - Reacquired after eukaryotes lost cell walls when they diverged from 
prokaryotes 
Genes - Regions of DNA transcribed into any type of RNA 
What are RNPs? Examples - Ribo...
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USABO QUESTIONS CORRECTLY ANSWERED 2024.
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USABO QUESTIONS CORRECTLY ANSWERED 2024. 
Eukaryote - ANSWER 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 - ANSWER This shows as pale areas in the nucleas under electro magnification. It is a less ...
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ETS MAJOR FIELD TEST IN BIOLOGY SENIOR SEMINAR FINAL 2024 QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED AND VERIFIED
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ETS MAJOR FIELD TEST IN BIOLOGY SENIOR 
SEMINAR FINAL 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 ...
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2023-2024 AGRC1041 (All Solved)
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Heterochromatin correct answers form of DNA - tightly coiled, usually peripherally placed in the nucleus, dark-staining, inactive - not involved in RNA synthesis 
 
Euchromatin correct answers form of DNA - partially/fully uncoiled, centrally placed, light staining, active - involved in RNA synthesis 
 
Basophilic correct answers stains readily with basic dyes (e.g haemotoxylin is a basic dye that stains the nucleus - which is basophilic - blue/purple) 
 
Nuclear envelope correct answers double-...
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