1.The protein which does not answer the aldehyde test is:A. HemoglobinB. AlbuminC. CaseinD. Gelatin2. Proteins may be estimated by the following methods, except:A. Biuret methodB. Heat coagulationC. Kjeldahl's digestionD. Nephelometry3. All the following are examples of tertiary structure of proteins, except:A. Alpha helixB. Beta pleated sheetC. Triple stranded helixD. Peptide bonds

“Since you have asked multiple question, we will solve the first question for you. If you want any…

Answered: 1. A. Hemoglobin B. Albumin C. Casein…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The elution of a protein with an isoelectric point of 7.5, is mostly likely to be affected by a change in pH from 7.4 to 6.9 in which type of protein separation technique? a.) size exclusion chromatography b.) SDS-acrylamide gel electrophoresis c.) affinity chromatography d.) ion exchange chromatography
One tenth mL of a protein solution was diluted with 2.5 mL of water. The A280 of the diluted solution was 0.25. How many mL of the original protein solution and water should be mixed to make 1.0 mL of solution of A280 = 0.80?
1. Which of the following statement/s is/are TRUE for the protein sample?* The sample will give a positive result to Biuret test. All of A, B and C The sample will give a positive result to Ninhydrin test. The sample will give a positive result to Xanthoproteic test. 2. Extremely high pH causes folding of the protein molecules. * The statement is CORRECT. The statement is INCORRECT. 3.Negative with Biuret Test but positive with Ninhydrin Test, Xanthoproteic Test and Millon’s Test Glycine Tryptophan Tyrosine Methionine Albumin
A Biuret test is a chemical test used to determine the presence of a peptide bond in a substance. Then how can Biuret test for proteins may also be extended to quantitatively measure the concentration of total protein?
Which of the following statements are true about stacking and separating gels? a. The holes is the separating gel are much smaller than the ones in the stacking gel. b. The stacking gel is at a pH of 6.9, while separating gel is at a pH of 8.9 c. The higher pH in separating gel causes the glycine buffer to accelerate more and thus leaving behind the proteins to stack at the interface. d. The smaller holes in separating gel slows down the mobility of the proteins at the interface.
Describe the 4 levels of protein structure: primary, secondary, tertiary and quaternary. And, note which will be disrupted by application of heat.
1. Which of the following proteins are coagulated by heat? A. Albumin B. Globulin C. Glutelins D. All of the above 2. Which of the following statement for fibrous protein is NOT true? A. Fibrous protein are insoluble B. They have high molecular weight C. There peptide chain is coiled D. Their axial ratio is more than 10
1. What is the name of the nucleotide shown here?2. Identify all pointed structures (A to H)3. Which structure causes the acidity of the nucleotide? Choose theletter of your answer.
1. The hydropathic index represents the sum of hydrophobic and hydrophilic residues of a polypeptide. A.true B.false
1. What is the function of each step or reagent used in the isolation of casein from milk? Reagents: a. Warm distilled water b. Vinegar c. Ethanol 2. What are the three general steps involved in the isolation of proteins? Discuss or briefly describe the purpose of each step. 3. Suggest a simple procedure (or test) to verify if the final product you obtained is indeed casein.
1- Why do we heat the proteins before we load them on the gel? What does beta-mercaptoethanol do to protein structure?
1. The chromatography solvent is very polar as it contains alcohol, an acid and water. Based on this information, list all the polar amino acids and arrange them from most polar to least polar.

SEE MORE QUESTIONS

Recommended textbooks for you

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781305961135

Author:

Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal

Publisher:

Cengage Learning

Biochemistry

ISBN:

9781305577206

Author:

Reginald H. Garrett, Charles M. Grisham

Publisher:

Cengage Learning

Fundamentals of General, Organic, and Biological …

Biochemistry

ISBN:

9780134015187

Author:

John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson

Publisher:

PEARSON

SEE MORE TEXTBOOKS

1. A. Hemoglobin B. Albumin C. Casein D. Gelatin The protein which does not answer the aldehyde test is: