Isoelectric point - Study guides, Class notes & Summaries

Chapter 02: Introduction to the 12-Lead ECG TRUE/FALSE 1. The point where the QRS complex and ST segment meet is called the ST-junction or J-po ANS: T The point where the QRS complex and the ST segment meet is called the ST-junction or J-point. OBJ: Identify the J-point and ST-segment deviations. 2. If the wave of depolarization (electrical impulse) moves toward the positive electrode, the waveform recorded on ECG graph paper will be upright (positive deflection). ANS: T If the wave of...

Princeton Review MCAT Practice Test Questions and Answers 100% CorrectPrinceton Review MCAT Practice Test Questions and Answers 100% CorrectPrinceton Review MCAT Practice Test Questions and Answers 100% CorrectPrinceton Review MCAT Practice Test Questions and Answers 100% Correct Sickle-cell anemia (HbS) results from a substitution to valine from glutamic acid at position 6 of the β chain of hemoglobin. Which of the following best explains why the isoelectric point of HbS is higher than that o...

MLT Clinical Chemistry Final Test with Correct Answers What is the isoelectric point? - Answer-the pH of a solution where a molecule is neutral Which of the following methodologies measures absorbed light? a. liquid chromatography b. ELISA c. electrophoresis d. spectrophotometry - Answer-spectrophotometry Which of the following is not an amino acid? a. leucine b. serine c. proline d. theriosine - Answer-theriosine There are ___________ non-essential and __________ essential ...

Rutgers Intro To Bio Chem Murphy Module 2 Questions And Answers What is the isoelectric point of the following tetrapeptide that contains the amino acids represented by the single letters "DREN", such that D is at the amino-terminal end of the peptide and N is at the carboy-terminal end. 3.86 4.06 6.53 8.8 12.48 ANS 4.06 What is the function of a lyase enzyme. To assist the substrate by binding to the enzyme, enabling substrate to active site engagement to facilitate a reactio...

You're using anion exchange chromatography to purify a small globular protein. After passing the mixture through the column, you find that your protein did not "stick" to the resin and flowed right through. What is a plausible reason for this to have occurred? Correct Answer-The pH of the solution is close to the isoelectric point. Oxygen binding that affects the cooperatively of hemoglobin is an example of heterotrophic regulation. Correct Answer-False You have determined that a leucin...

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 ...

NCBE Biochemistry Test Questions There are _____ amino acids incorporated into proteins - 20 All amino acids exist in the L-form except for _____ - Glycine Amphoteric - Can act as both an acid and base What are the essential amino acids (10) - Phenylalanine Valine Tryptophan Threonine Isoleucine Methionine Histidine Arginine Leucine Lysine What amino acid is essential in children but no adults? - Histidine Purely ketogenic amino acids - Leucine and lysine (Lucy Li...

________ reacts with amino groups to form shift bases - aldehyde 8. What volume of 2 M HCl is required to completely titrate a 4 mmol monosodium aspartate (Asp.Na) solution? a. 2 ml b. 3 ml c. 4 ml d. 6 ml or more - C; 2x4 = 8 /2 = 4 ml A 42-amino acids peptide related to the extracellular Alzheimer amyloid deposits has the last few residues immersed in the membrane bilayer(must be nonpolar). Based on your knowledge about membrane proteins, which of the following sequences most probabl...

Amino Acid and Side Groups correct answers - Negative Side Groups = Acidic - Positive Side Groups = Basic Absolute Configuration correct answers refers the R/S naming convention. Some amino acids are R, and some are S. Relative Configuration correct answers - D/L naming convention. - All biologically produced amino acids are in the L configuration. Conformational stability correct answers - Temperature: Denatures second, third, and fourth tertiary - pH: Third and fourth; Destroys io...

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...