Chargaff Study guides, Class notes & Summaries

BHCS1002 2023 Exam with Complete Solutions Questions Chargaff's Rule for DNA - ANSWER %A=T and %C=G What is chromatin made of? How does it allow packaging of DNA into the nucleus of eukaryotic cells? - ANSWER Chromatin= protein + DNA positive charge to facilitate binding to DNA Chromosome are highly organised, tightly packed Core histones form a nucleosome with DNA Linker histones more variable Enzymes involved in DNA replication - ANSWER DNA helicase and DNA polymer...

Two sources of variability that arises during meiosis and fertilizations - 1. Crossing over 2. Independent Assortment Crossing Over - homologous chromosomes pair... each sister chromatid consists of a single stranded DNA molecule What is the result of the crossing over between homologous chromatids? - The exchange of segments Where do the homologous chromosomes separate? - First meiotic division What is produced after meiosis II - two daughter chromosomes have parental combinations of al...

PORTAGE LEARNING CHEM 210 - MODULE 6 EXAM. In RNA, guanine always pairs with . Thymine Guanine Cytosine Uracil Both A and B CYSTOSINE DNA is built from which of the following? Nucleosides Genes Purines Nucleotide Codons NUCLEOTIDE The Z-form helix of DNA is stabilized mainly by . Ionic bonds Covalent bonds Hydrogen bonds Ion-dipole bonds Hydrogen covalent bonds HYDROGEN BONDS Question 1 3 / 3 pts Question 2 3 / 3 pts Question 3 3 / 3 pts Question 4 3 / 3 pts Questi...

BIO 111 TAMU Fletcher Exam 3 Already Graded A Friedrich Miescher discovered DNA in 1869 But did not know (Isolated phosphate) rich acidic compounds Frederick Griffith Discovered transformation during an experiment that involved injecting mice with smooth S cells, rough R cells, heat-killed S cells, and heat-killed S cells with living R cells. Avery, MacLeod, McCarty Identified the heritable substance as DNA Used test tubes- vitro Hershey and Chase performed experiments showing that DNA is the...

What cellular events occur in the G1 phase of the cell division cycle? - ANSWER normal growth and cell function What is the best way to describe homologous chromosomes? - ANSWER they carry information for the same traits In some parts of Africa, the frequency of individuals who are heterozygous for the sickle-cell anemia allele is higher than the frequency in North America, presumably because this reduces the frequency of malaria. Such a relationship is related to what? - ANSWER Darwin's ...

1 PORTAGE BIOCHEM MODULE 6 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Most common nucleic acids Correct Answer: Deoxyribonucleic acid (DNA) Ribonucleic acid (RNA) Nucleic acid monomers Correct Answer: nucleotides DNA function Correct Answer: stores genetic info encoding primary sequence of proteins RNA function Correct Answer: makes proteins from info in DNA Nucleotide structure Correct Answer: base + monosaccharide + phosphoric acid (H3PO4) Site of phosp...

Nats 1670 Final Exam questions and answers well illustrated. What was the life expectancy in the early 1900's? - correct answer. Under the age of 50, with a 25% child mortality rate. When was the first vaccine created? - correct answer. 1880 ____________ _____________ can reduce life expectancy dramatically, due to the lack of __________________. - correct answer. INFECTIOUS DISEASES can reduce life expectancy dramatically, due to the lack of CONTROL. Upo...

BIO110 PRACTICE EXAM 4|165 Questions with Verified Answers TRNA has a few loops in its structure, what loops connects to the mRNA codon? a. codon domain b. anticodon c. acodon d. amino acid - CORRECT ANSWER b. anticodon Catabolite activator protein: a. increases the affinity of the promoter region for RNA polymerase b. decreases RNA polymerase activity c. becomes nonfunctional when it binds to AMP d. binds and activates RNA polymerase e. blocks RNA polymerase access to the DNA tem...

ASCP ACTUAL 2022/2023 EXAM QUESTIONS AND ANSWERS 2023 SOLUTION COMPLETE 100% VERIFIED GUIDE.ASCP ACTUAL 2022/2023 EXAM QUESTIONS AND ANSWERS 2023 SOLUTION COMPLETE 100% VERIFIED GUIDE.ASCP ACTUAL 2022/2023 EXAM QUESTIONS AND ANSWERS 2023 SOLUTION COMPLETE 100% VERIFIED GUIDE.

AP Biology Chapter 16 Practice Questions In his transformation experiments, what did Griffith observe? Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form. After mixing a heat-killed, phosphorescent strain of bacteria with a living nonphosphorescent strain, you discover that some of the living cells are now phosphorescent. Which observations would provide the best evidence that the ability t...