A protein which has more than one stable conformation is called a: a) chaperone protein b)  molten globule   c)  flexible protein   d) inherently unstructured protein If a denatured protein does not spontaneously renature upon removal of denaturing agents, it may require a ____ to renature. a) chaperone protein  b)  molten globule   c)  flexible protein   d) inherently unstructured protein Prion protein and amyloid protein have which trait in common? A) They denature very easily   b)  they are both unstable forms of ribonuclease   c)  they bind strongly to hemoglobin   d) they both may assume a fibrous form which is damaging to brain tissue

Q: You run an SDS-PAGE gel on some purified protein samples against a protein ladder as marked. kDa 225…

A: SDS PAGE is an electrophoretic technique, which is used to separate proteins based on their size.…

Q: 2) (recall) whlo is the coding one? A)UAG B)UGA C)UAA D) AUG E) none of the above 13)…

A: A codon is a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid.The…

Q: You want to mutate a Trp residue which is located in the interior of a protein structure. Which of…

A: Amino acids are the monomers that are bonded by peptide bonds to make polypeptide chains.

Q: Polymerization of nucleotides results in: a) polypeptides b) polynucleotides c) polysaccharides d)…

A: BASIC INFORMATION  POLYMERISATION It is the process in which  many small molecules combine with each…

Q: In standard agarose gels used for the analysis of DNA, linear DNA fragments are separated on the…

A: Agarose gel electrophoresis is the most effective, easy, and efficient way to purify, separate,…

Q: Which of the following is true about t? a) The higher the content of G = C base pairs, the lower the…

A: Tm, also known as the melting temperature, is the temperature at which half of the DNA strands in…

Q: 18. Hershey and Chase used radiolabeled macromolecules to identify the material that contains…

A: Hershey and Chase had done their experiment to find the genetic material. They used different kinds…

Q: 1) Antibiotics that inhibit the formation of the peptidoglycan layer in bacteria work through…

A: The bacterial cell wall is a rigid, protective layer that surrounds the bacterial cell membrane and…

Q: amino acids are covalently linked to tRNAs via what  a) phosphodiester bond  b) premature…

A: Protein synthesis is governed by the genes which are present on the chromosomes. The genes are first…

Q: Which amino acid is most likely to have a net positive charge at a pH of 7.4? A) Histidine B)…

A: As an amino acid (AA) is introduced into a polypeptide chain, amino and carboxyl group charges…

Q: 7) The figure below shows a B-barrel protein embedded in a hydrophobic membrane. The central cavity…

A: Beta barrels are known to be embedded in the membrane for various functions like transport of cargo.…

Q: The protein pictured has .. O A) primary structure B) secondary structure C) tertiary structure D)…

A: Proteins are a class of complex nitrogen organic compounds, composed of amino acid residues joined…

Q: 21. Polymerization of amino acids results in: a) polypeptides b) polynucleotides c) polysaccharides…

A: Proteins are polymers which are formed by connecting the alpha carboxyl group of one amino acid to…

Q: nucleic acid.  b) . What is/are the major chemical difference(s) between RNA and DNA?

A: It is the question about nucleic acid i. DNA and RNA. Both DNA and RNA  are nucleic acid but though…

Q: Which THREE of the following characteristics are the same in both DNA and RNA? A) deoxyribose sugar…

A: Nucleic acid are the macromolecules which are found in the cells or the viruses. It is of two types…

Q: RNA lacks the stability of DNA. Why? a) It has an unmethylated uracil. b) It is originally produced…

A: DNA is a genetic molecule that is the molecule of inheritance which transmits certain…

Q: What statement is TRUE based on the protein folding funnel on the left? a) The folding funnel is…

A: Protein Folding-The production of a mature protein is a multistep process in eukaryotic cells.The…

Q: What is the major difference between motifs and domains? a) Motifs are unstable on their own, while…

A: Motifs and domains are the structural elements of proteins that differ in their organisation and…

Q: Electrophoresis is a method used to sort proteins by their size. Why is a detergent added to the…

A: Electrophoresis  It is a biochemical technique to separate charged molecules under the influence of…

Q: HOW MANY of the following five items represent modes of protein denaturation? 1.) heating a protein…

A: Proteins are biomolecules composed of amino acids. Amino acids are joined together through peptide…

Q: What type of weak interactions stabilize DNA a) salt bridges between bases on opposite strands b)…

A: DNA are polymers of nucleotides. A nucleotide consists of a nitrogenous base(A, T, G, C) attached to…

Q: A DNA molecule that is 1000 base pairs in length would go molecule that is 200 base pairs in length.…

A: All living organisms store their genetic information in form of DNA / RNA. This genetic information…

Q: Which of the following sequences in the coding strand of the DNA could code for this peptide? Select…

A: Amino acids are coded by codons (trinucleotide sequences of DNA or RNA). Specific codons code for…

Q: What do chaperones assist in? A) Ubiquitinization of proteins B) Protein modification C) Protein…

A: Chaperons  are proteins that are present in all living organisms and they are essential for cell…

Q: Please, help with the answer and explain it: When observing a bacterial cell, a scientist observed…

A: Bacterial cell is a prokaryotic cell.In the prokaryotic cell, translation process which is involved…

Q: 1) DNA consists of a series of nitrogenous base molecules held together by weak hydrogen bonds.…

A: Generally, a nucleotide has three components namely,(a) A nitrogenous base.(b) A pentose sugar…

Q: Shown below is an internal fragment of a polypeptide. If this polypeptide were growing, onto which…

A: The incorporation of an amino acid into a protein follow specific trend with respect to the ends of…

Q: 1) If the pH of the rain drops from 6 to 5 due to air pollution, the rain has become: a) two time…

A: Acid rain caused when the rain is mixed with the volatile toxic compounds like sulfur dioxide and…

Q: An intermediate folding stage seen in protein denaturation or renaturation is called : a) domain  b)…

A: An intermediate folding stage seen in protein denaturation or renaturation is called :and option :a)…

Q: Which of the following sequences could NOT be used as an anticodon in a cell? Question 41 options:…

A: Codons are present in mRNA .it is made up of 3nucleotides .tRNA has a anticodon loop which makes…

Q: Which of the following levels of protein structure can involve covalent bond formation? A) Primary…

A: The structure of a protein is organized into four levels of organization: primary, secondary,…

Q: SDS gel electrophoresis can be used to determine a.) The molecular mass of denatured protein…

A: The proteins are composed of amino acids and it forms the building block of life. Group of amino…

Q: Which of the following amino acids is unique in that it can bind both non-specifically to the DNA…

A: All the protein that interact or bind with the DNA is called as the DNA binding proteins. These DNA…

Q: What do x-helices and B-sheets have in common?

A: Alpha helix and beta sheets are two types of secondary structure present in the protein structure.…

Q: 9) Which statement is inaccurate (wrong) about mRNA? A) it is double stranded and has thymine B) it…

A: The explanation for the wrong statement is given below.

Q: After running our protein samples on an SDS-PAGE gel, we will use a Coomassie-based dye (Gel Code…

A: Protein is a polymer formed from amino acid joined by peptide bond. It is abundantly found in the…

Q: TRANSCRIPTION a) polypeptide TRANSLATION a) MRNA b) both strands of DNA c) TRNA d) one strand of DNA…

A: For replication, we require both strand of DNA that will act as template stand for bi-directional…

Q: The precise biochemical activity of a protein is described ina) Phenotypic functionb) Cellular…

A: The biochemical activity of a protein is an active protein, which performs different protein…

Q: The following define nucleic acids EXCEPT А They are polyionic molecules of high molecular weight…

A: Nucleic acids are Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

Q: What interactions stabilize the formation of a ß-sheet from ß-strands? a) Salt bridges from charged…

A: A protein's function depends on its structure. There are four levels of protein structure: primary,…

Proteins

We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.  

Protein Expression

The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.