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...

Bio 311C Week 9 QUESTIONS AND ANSWERS A+ GRADED Essential Properties of a Molecule of Heredity - Sufficient variability to store information. - Able to make copies of information. - Information should be accessible for gene expression. T.H. Morton Discovered that chromosomes are made of DNA, proteins, and genes. 1928, Fredrick Griffith Discovered the there was a change in genotype and phenotype due to assimilation of foreign DNA. 1944, Avery, McCarty, and MacLeod Discovered tha...

Portage Learning CHEM 210 exams 1-8 and final exam Question 1 3 / 3 pts True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. True Correct! False Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. True Correct! False Question 3 3 / 3 pts True or False: The following functional group is an alcohol. True Correct! False Question 4 3 / 3 pts True or False: In ...

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...

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...

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...

Genetics PCB 3063 Exam 3 Study Guide Solutions Nucleotide - ANSWER-Repeating structural unit of DNA and RNA. Composed of a nitrogenous base, a sugar, and a phosphate. Purines - ANSWER-Two fused heterocyclic rings A, G Pyrimidines - ANSWER-One single heterocyclic ring T, U, C Nucleotide Sugars - ANSWER-Ribose Deoxyribose (Base is always attached to C-1' of the sugar. Phosphates - ANSWER-Can be attached to the C-5' of the sugar. Deoxyribonucleo-side - ANSWER-Base + Sugar ©EMILLE...

Lewin's Genes XII: Chapter 3 Exam Questions With Verified Answers. Alternative Splicing - answerThe production of different RNA products from a single product by changes in the usage of splicing junctions. Cluster Rule - answerRule discovered by Erwin Chargaff that purines tend to cluster on one DNA strand and pyrimidines tend to cluster on the other. As applied to exons, the purines, A and G, tend to be clustered in one DNA strand of the DNA duplex (usually the nontemplate strand) and t...

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...