Isoelectric point pi Study guides, Class notes & Summaries

BCH4024 EXAM 1 QUESTIONS WITH CERTIFIED ANSWERS Transfer RNA (tRNA) secondary structure: - Answer-tRNA "reads" genes information encoded in mRNA (3 nucleotide codon) copied from DNA What does tRNA transfer during protein synthesis - Answer-the appropriate amino acid to a growing polypeptide chain Transcription creates a: - Answer-complementary RNA copy (mRNA) of a sequence of DNA Translation steps: - Answer-mRNA decoded by ribosomes and tRNA is used to produce a specific amino acid ...

(*Molecular Biology) Hydrolases correct answers Enzymes that catalyze reactions between a specific substrate and water in order to break a covalent bond. (*Molecular Biology) pI (Isoelectric point) of an amino acid correct answers The pH at which an amino acid carries no electrical charge (average of the pKa's of the carboxyl and amino group) (*Genetics) Silent Mutations correct answers Mutations that do not change the amino acid sequence (*Molecular Biology) When are Amino aci...

ACS Biochemistry Final Exam Questions and Correct Solutions 2024 pKa (chapter 3) - Answer -measure of the tendency of a group to give up a proton (acidity); tendency decreases tenfold as pKa increases by one unit thioester bond (1) - Answer -compounds with functional group C-S-CoA-C (eg, in acetyl-CoA) zwitterion (3) - Answer -dipolar ion with both positive and negative groups but overall neutral charge; can act as either an acid or base Isoelectric point (pI) (chapter 3) - Answer -the ch...

The Structure of Amino Acids correct answers Amino group, carboxyl group, and R group attached to alpha carbon What is the carbon attached to the amino group, carboxyl group, and R group? correct answers Alpha carbon What are the carbons after the alpha carbon? (in the correct order away from the alpha) correct answers Beta, gamma, delta What is the pI? correct answers Isoelectric point of the Amino Acid titration curve What is the point of the Amino Acid curve? correct answers To ta...

Buffer Order and Henderson Hasselbach - Water, Buffer, Salt, Base pH = pKa + log(A/HA) pKa decrease as temp increase so pH decrease Ramachandran plots - Φ = N-R ψ = C-R optimal angle to prevent steric hinderance Protein structure of a helix, B sheet, reverse turn - a: LEMARKHQ B: VICYFTW RT: PSDNG how many amino acids in alpha turn helix - 3.6 Super secondary structure - helix turn helix parallel vs. antiparallel - parallel wedges face same way antiparallel face opposite ...

Myoglobin was an example protein when the video started talking about folding. Myoglobin is found in large amounts in _____________________. A) muscle B) brain C) fat D) skin - ANSWERSA) muscle Coenzymes such as water-soluble vitamins are needed in only small amounts because A) each vitamin molecule can be reused many times as a cofactor. B) they can be eliminated in the urine. C) only small amounts of substrates are available at any one time. D) only small amounts of enzymes are pres...

pKa (chapter 3) - measure of the tendency of a group to give up a proton (acidity); tendency decreases tenfold as pKa increases by one unit thioester bond (1) - compounds with functional group C-S-CoA-C (eg, in acetyl-CoA) zwitterion (3) - dipolar ion with both positive and negative groups but overall neutral charge; can act as either an acid or base Isoelectric point (pI) (chapter 3) - the characteristic pH at which the net electric charge is zero SDS - Sodium Dodecyl Sulfate (chap ...

ACS Biochemistry First Semester Exam With Complete Solutions 2024 Buffer Order and Henderson Hasselbach - answerWater, Buffer, Salt, Base pH = pKa + log(A/HA) pKa decrease as temp increase so pH decrease Ramachandran plots - answerΦ = N-R ψ = C-R optimal angle to prevent steric hinderance Protein structure of a helix, B sheet, reverse turn - answera: LEMARKHQ B: VICYFTW RT: PSDNG how many amino acids in alpha turn helix - answer3.6 Super secondary structure - answerhelix turn helix...

ACS Biochemistry First Semester Exam With Complete Solutions 2024 Buffer Order and Henderson Hasselbach - answerWater, Buffer, Salt, Base pH = pKa + log(A/HA) pKa decrease as temp increase so pH decrease Ramachandran plots - answerΦ = N-R ψ = C-R optimal angle to prevent steric hinderance Protein structure of a helix, B sheet, reverse turn - answera: LEMARKHQ B: VICYFTW RT: PSDNG how many amino acids in alpha turn helix - answer3.6 Super secondary structure - answerhelix turn helix...

MCAT - Lab Techniques (MilesDown)Native-PAGE - correct answer A polyacrylamide gel electrophoresis method for proteins using NON-DENATURING conditions. Proteins keep their native charge and structure so they are separated based on charge and size. SDS-PAGE - correct answer A polyacrylamide gel electrophoresis method for proteins using DENATURING conditions. Sodium Dodecyl Sulfate denatures the proteins and gives the proteins a uniform charge. This allows them to be separated solely on mass, t...