Erwin chargaff - Study guides, Class notes & Summaries

Portage Biochem Module 6 Questions and Answers Already Passed Most common nucleic acids Deoxyribonucleic acid (DNA) Ribonucleic acid (RNA) Nucleic acid monomers nucleotides DNA function stores genetic info encoding primary sequence of proteins RNA function makes proteins from info in DNA Nucleotide structure base + monosaccharide + phosphoric acid (H3PO4) Site of phosphoric acid bonding to sugar Carbon 5 Composition of bases heterocyclic organic compounds containing N Purine structure 2 r...

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...

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...

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...

Nats 1670 Final Exam What was the life expectancy in the early 1900's? Under the age of 50, with a 25% child mortality rate. When was the first vaccine created? 1880 ____________ _____________ can reduce life expectancy dramatically, due to the lack of __________________. INFECTIOUS DISEASES can reduce life expectancy dramatically, due to the lack of CONTROL. Upon early discover, microbes were viewed as? Enemies, until used in medicine. What are the beneficial roles of microbes? - w...

Biology 330: Exam 2 (DNA Structure & Replication) questions and answers well illustrated. What two elements were identified in an acidic compound that was isolated from the nucleus by Johann Miescher? - correct answers.Nitrogen & Phosphorus Why proteins were thought to encode information that pertains to inheritable traits? - correct answers.1. Inheritable traits are diverse, and therefore molecules that encode these traits must be diverse 2. Proteins are made of 2...

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...

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...

Biology Practice Test 4|50 Questions with Verified Answers 1) Which of the following is the best modern definition of evolution? A) descent with modification B) change in the number of genes in a population over time C) survival of the fittest D) inheritance of acquired characters - CORRECT ANSWER A 2) Which statement about the beak size of finches on the island of Daphne Major during prolonged drought is true? A) Each bird evolved a deeper, stronger beak as the drought persisted. B)...

People to Know - AP Biology Exam Questions and Answers Gregor Mendel Monk who grew up in Austria, experimented with garden peas in 1857 to study inheritance, documented "particulate mechanism", came up with laws of independent assortment and segregation. Thomas Hunt Morgan Came up with first solid evidence associating a specific gene with a specific chromosome by working with various varieties of Drosophila; invented notation for symbolizing alleles; discovered sex-linked trait of whit...