Isoelectric point - Study guides, Class notes & Summaries

ASCP MLT Chemistry Exam Questions with Answers Graded A+ What is the principle of flame photometry? - Answer-emission of color when an element is burned What is the principle of atomic absorption spectrophotometry? - Answer-It measures energy emitted by ultraviolet rays What is the light source in atomic absorption instrumentation? - Answer-cathode lamp Quenching is a disadvantage in what type of instrumentation? - Answer-fluorometry What analytical method measures the amount of lig...

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...

(*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...

· Turbidity Measurements - Spectrophotometer sends light through a culture. Light absorbance can give a rough measure of cell density in the tube ·Agrobacterium - Crown-Gall Disease - The crown gall is where the stem of the plant connects with the roots of the plant. Causes tumours, parasitism. THIS IS BAD, we don't want this one. Agrobacterium is the only one that can use opine as a carbon and nitrogen source. It robs the plant of organic carbon. We can use agrobacterium to introduce ne...

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...

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 ...

BCH403 FINAL EXAM QUESTIONS WITH REVISED ANSWERS – UPDATED!! Which of the following is NOT a potential function of specific transcription factors? - Answer-Melt promoter DNA The following peptide is dissolved in a solution of pH 7. M-D-L-P-S-K. What is the peptide's net charge and can this peptide be purified by ion exchange chromatography? - Answer-0, and it cannot because it is at the isoelectric point. The process by which hydrophobic molecules are driven together, therefore maximiz...

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 ...

Bio 268 Exam 2 Questions and Answers | Latest Update | 2024/2025 | Already Passed What is the general structure of an amino acid? It consists of a central carbon bonded to an amino group, a carboxyl group, a hydrogen atom, and an R group. What is stereoisomerism in amino acids? All life uses the L form, where the amino group is on the left side. Explain the acidic/basic properties of amino acids. Amino acids can act as both acids (releasing H+) and bases (accepting H+), with the ...

How many commonly occurring amino acids are there? correct answers There are 20 commonly occurring amino acids that are used for synthesis of proteins in all living systems What do amino acids contain? correct answers Amino acids contain an alpha-carboxyl group, an alpha-amino group and a distinctive R group substituted on the alpha-carbon What part of amino acids contribute to stereoisomeric forms? correct answers The alpha carbon of all amino acids except glycine is asymmetric and thus a...