Euchromatin Study guides, Class notes & Summaries

Biochemistry Section-USMLE Step 1 which histone ties DNA-histone nucleosome beads into more condensed structures? Answer- H1 is DNA acidic or basic? Answer- acidic what type of aa are histones made of? are they acidic or basic? Answer- lysine and arginine; basic is heterochromatic more accessible or less accessible to TF? euchromatin? Answer- less; more if a cell has a hyperchromatic or condensed nucleus is it undergoing transcription etc? Answer- no what are chromosome...

MB (ASCP) Exam Questions & Answers 2023/2024 Predominant form of DNA - ANSWER-Right-handed B DNA and histone interaction is due to what type of bond? - ANSWER-Ionic What stains to the minor groove of DNA duplex? - ANSWER-SYBR Green What is the most abundant type of RNA? - ANSWER-Ribosomal RNA (rRNA) What does RNA act as in a retrovirus? - ANSWER-Genome and mRNA What increases half-life of mRNA? - ANSWER-5' Methyl Cap What kind of DNA is most likely to be transcriptionally...

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 daughter strands? Answers: Mismatch repair Photoreactivation repair (Nucleotide excision repair) SOS repair Doub...

Biology 1406 Exam 3 Questions and Answers Rated A+ Cell division is used for which of the following ? 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_____________ Can produce great variation among the offspring (Meiosis) Asexual Reproduction ____________ Produces offspring genetically identical to the parent (Mitosis) Mos...

MB (ASCP) Exam Questions & Answers 2023/2024 Predominant form of DNA - ANSWER-Right-handed B DNA and histone interaction is due to what type of bond? - ANSWER-Ionic What stains to the minor groove of DNA duplex? - ANSWER-SYBR Green What is the most abundant type of RNA? - ANSWER-Ribosomal RNA (rRNA) What does RNA act as in a retrovirus? - ANSWER-Genome and mRNA What increases half-life of mRNA? - ANSWER-5' Methyl Cap What kind of DNA is most likely to be transcriptionally...

CBSE FINAL EXAM 2023/2024 GRADED A LATEST VERSION A 66-year-old woman comes to the physician because of severe lower back pain. She is otherwise healthy with well-controlled hypertension and hyperlipidemia. She does not drink, but has smoked one pack of cigarettes per day for the past 20 years. An x-ray of the lumbar spine shows an anterior wedge compression fracture of L1. Results of dual-energy X-ray absorptiometry (DEXA) scan shows substantially decreased bone density in the region...

What is an example of incomplete dominance? - correct answer A red and white snapdragon making a pink offspring What is an example of co-dominance? - correct answer Blood cells. What is Pleiotropy? - correct answer When a gene affects more than one phenotypic character. What is the norm of reaction? - correct answer The range of phenotypic possibilities What are some example of polygenic inheritance? - correct answer Skin color and height Norms of reactions are broadest...

MB (ASCP) Exam Questions and Answers Graded A Predominant form of DNA - Answer ️️ -Right-handed B DNA and histone interaction is due to what type of bond? - Answer ️️ -Ionic What stains to the minor groove of DNA duplex? - Answer ️️ -SYBR Green What is the most abundant type of RNA? - Answer ️️ -Ribosomal RNA (rRNA) What does RNA act as in a retrovirus? - Answer ️️ -Genome and mRNA What increases half-life of mRNA? - Answer ️️ -5' Methyl Cap What kind of DNA is mo...

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 daughter strands? Answers: Mismatch repair Photoreactivation repair (Nucleotide excision repair) SOS repair Doubl...

Genome - Answer- Set of genetic instructions Gene - Answer- an inherited segment of DNA that determines traits Traits are determined by genes that are on? - Answer- Chromosomes Green Revolution - Answer- During the 50's and 60's, it was the great increase in production of food grains that resulted in large part from the introduction of new, high-yielding varieties. Saved over 1 billion lives One of the leading causes of youth blindness is? - Answer- Vitamin A deficiency Gene Rev...