Isoelectric point - Study guides, Class notes & Summaries

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,...

RADT1001 Ch 16 | Questions and Correct Answers | Latest Update 2024/2025 Regarding the electrocardiographic tracing, all of the following are true EXCEPT: a. repolarization of atrial muscle cells is represented by the P wave. b. the QRS-complex represents depolarization of ventricular muscle cells c. the S portion of the QRS complex represents a return to the baseline (isoelectric point). d. the U wave is theorized to represent repolarization of the papillary muscles and Purkinje fibe...

ACS Biochemistry First Semester Exam Questions and Verified Solutions 2024 Buffer Order and Henderson Hasselbach - Answer -Water, Buffer, Salt, Base pH = pKa + log(A/HA) pKa decrease as temp increase so pH decrease Ramachandran plots - Answer -Φ = N-R ψ = C-R optimal angle to prevent steric hinderance Protein structure of a helix, B sheet, reverse turn - Answer -a: LEMARKHQ B: VICYFTW RT: PSDNG how many amino acids in alpha turn helix - Answer -3.6 Super secondary structure - Answe...

ECG TEST Exam Questions with 100% Correct Answers | Verified Which of the following BEST describes universal and standard precautions? - answerStandard precaution conbine universal and body substance isolation When might you be required to perform a 'stat' ECG? - answerWhen a patient has chest pains or changes in his or her cardiac rhythm Telemedicine monitoring is generally used to evaluate which of the following? - answerArtificial pacemaker functioning Which of the following is NOT ...

P wave - Answer Usually round & upright 0.06 to 0.12 seconds QRS complex - Answer normal duration 0.4 to 0.10 (one small box to 2.5 small boxes) PR interval - Answer normal duration 0.12 to 0.20 ST segment - Answer should be isoelectric the "J point" should come back to baseline 10 times method - Answer count the number of R waves in a 6 second strip and multiply by 10 Big block method - Answer Divide the number of big boxes between 2 consecutive R waves into 300 ...

What are the 6 parts of the cardiac conduction cycle? correct answer: -SA node -Internodal pathways -AV node -Bundle of His -R and L bundle branches -Purkinje fibers What is the SA node? correct answer: -Small cluster of cells located in the upper R atrium *-Pacemaker of the heart* What are internodal pathways? correct answer: Impulses sent by the SA node that travel through the atrial muscle fibers via the intra-atrial pathways Allows for simultaneous depolarization and contra...

Electrocardiogram (ECG) correct answer: Since you can't see the heart beating we use a ECG to provide a picture that replicates the actual cardiac issue. Myocardial Infraction (MI) correct answer: Heart Attack -Have abnormal rhythms. -Death of cardiac muscle due to ischemia Doe the ECG machine monitor or control the hearts rhythm? correct answer: Only monitors Straight line when machine is turned on but not connected to the patient correct answer: Isoelectric = no current ...

What is a junction potential? - correct answers When dissimilar electrolyte solutions are in contact, a voltage difference, called a junction potential, will usually develop at their interface. What is a fundamental limitation on the accuracy of direct potentiometric measurements? Why? - correct answers Junction potential; we do not know its contribution to voltage What is alkaline error when using a pH measuring glass electrode? - correct answers Too much Na+ relative to H+, electrode wil...

BIOCHEM ACS STUDY GUIDE QUESTIONS AND ANSWERS 2024. Each of the following subcellular structures contains DNA EXCEPT A. the nucleus. B. ribosomes. C. chloroplasts. D. mitochondria. - ANSWER- B In plant and animal cells, the three-dimensional integrity of the cell is maintained, in part, by an internal network of filaments called A. the cell wall. B. the Golgi apparatus. C. the cytoskeleton. D. the endoplasmic reticulum. - ANSWER- C Of the following, which are prokaryotes? A. viruses...