Steric hindrance - Study guides, Class notes & Summaries

Nucleoside vs. tide correct answers nucleoside: no phosphate group tide: A vs. B form of helix correct answers (both right handed) B: -predominant form in aq. -B can accommodate a spine of water molecules lying in the minor groove (not A): H bonding between h2o and DNA contributes to stability of B form -slightly tilted A: -RNA = always A b/c of steric hindrance in B w/ extra hydroxyl group -grooves are nearly equal -Bases lie farther to the outside and are strongly tilted with r...

AAMC practice test scored 100% in chromatography of the reaction mixture, water is absorbed on cellulose functioned as the stationary phase - what is the principal factor determine the migration of individual components in the sample? -Answer-HYDROGEN BONDING (determines rate of migration) dehydration reaction (tertiary OH to double bond) occurs most readily with what OH? reaction involves loss of WATER molecule and the reaction has a CARBOCATION intermediate -Answer-tertiary alcohols am...

Science 0rganic chemiStry mechaniSm of a reaction How do you get a disaccharide? - ANS-From the same reaction that gave us the glycoside! Its just that now the alcohol is.....ANOTHER MONOSACCHARIDE! YAY! What kind of bond does Cellulose have vs Starch and glycogen? - ANS-BETA 1, 4 vs the ALPHA of starch and glycogen (some α 1,6 in there too!) Basic structure of an Amino Acid - ANS- a central carbon atom attached to a hydrogen, an acidic carboxyl group (−COOH), an amino grou...

AAMC MCAT Practice Exam 1 with correct answers 2023 In the chromatography of the reaction mixture, water absorbed on cellulose functioned as the stationary phase. What was the principal factor determining the migration of individual components in the sample? A) Hydrogen bonding B) Solute concentration C) Stationary phase concentration D) Thickness of paper - correct answer A) Hydrogen bonding The answer to this question is A because the relative amount of hydrogen bonding to the stati...

AAMC FL 1 FULL REVIEW- Chem/Phys Questions and Answers 2023 In the chromatography of the reaction mixture, water absorbed on cellulose functioned as the stationary phase. What was the principal factor determining the migration of individual components in the sample? A.Hydrogen bonding B.Solute concentration C.Stationary phase concentration D.Thickness of paper B and D are dumb options. Knock them out. hydrogen bonding to the stationary phase will determine the relative rate of migrati...

Chem 210 Exam 3 Questions and Correct Answers, With Complete Solution. what face of the pi bond can EAR occur from? either face how many products do EARs on an alkene form? 4 stereoisomeric products Brainpower Read More in a substitution rxn, what does H-O act as? nucleophile and replaces LG in an elimination rxn, what does H-O acts as? base and abstracts BH atom what is a requirement for elimination rxns? beta hydrogen what is a requirement for substitution rxns? leaving group ...

Chem 210 Exam 3 Questions and Correct Answers, With Complete Solution. what face of the pi bond can EAR occur from? either face how many products do EARs on an alkene form? 4 stereoisomeric products Brainpower Read More in a substitution rxn, what does H-O act as? nucleophile and replaces LG in an elimination rxn, what does H-O acts as? base and abstracts BH atom what is a requirement for elimination rxns? beta hydrogen what is a requirement for substitution rxns? leaving group ...

AAMC FL 1 FULL REVIEW- Chem/Phys Question with complete solution 2023In the chromatography of the reaction mixture, water absorbed on cellulose functioned as the stationary phase. What was the principal factor determining the migration of individual components in the sample? A.Hydrogen bonding B.Solute concentration C.Stationary phase concentration D.Thickness of paper B and D are dumb options. Knock them out. hydrogen bonding to the stationary phase will determine the relative rate of...

Lehninger Biochemistry Chapter 4 Questions And Answers Rated A+. All of the following are considered "weak" interactions in proteins, except: A) hydrogen bonds. B) hydrophobic interactions. C) ionic bonds. D) peptide bonds. E) van der Waals forces. - correct answer. D) peptide bonds. The most important contribution to the stability of a protein's conformation appears to be the: A) entropy increase from the decrease in ordered water molecules forming a ...

All of the following are considered "weak" interactions in proteins, except: A) hydrogen bonds. B) hydrophobic interactions. C) ionic bonds. D) peptide bonds. E) van der Waals forces. - D) peptide bonds. The most important contribution to the stability of a protein's conformation appears to be the: A) entropy increase from the decrease in ordered water molecules forming a solvent shell around it. B) maximum entropy increase from ionic interactions between the ionized amino acids in a ...