The O-linked glycoproteins of eukaryotes usually have their sugar chains attached to—     buried carbonyls in the protein backbone.     the carboxyl terminal residue.     the -OH of Ser or Thr residues.     the carboxyl groups of Asp or Glu.     surface carbonyls in the protein backbone.

Q: Which

A: Presence of amino acids and its proximity  affects pka value of other

Q: The image below shows the different interactions responsible for the spontaneous folding of a…

A: According to Anfinsen's hypothesis the sequence or primary structure of a protein f=determines the…

Q: Which one of these characteristics is not true for the alpha helix? Proline is typically not found…

A: The alpha helix is a motif made up of amino acids arranged in a right-handed coil structure. It…

Q: A protein has a mutation of a glycine to a lysine. Which best predicts the impact of this mutation…

A:

Q: There is a "primary driving force" behind protein folding (to form tertiary structure). This driving…

A: Proteins are the monomers of amino acids that have a chiral or an alpha carbon with all four groups…

Q: Where would the leucine side chain most likely be found in a protein dissolved in water? In the…

A: Amino acids are the building blocks of proteins. The amino acid polymer which joins together with…

Q: Using your best guess, what percentage of the protein is alpha helices? What about beta sheets?…

A: The branched-chain α-ketoacid dehydrogenase complex (BCKDC or BCKDH complex) is a multi-subunit…

Q: Which of the following is incorrect? Oa. Asp and Glu are basic amino acids Ob. Asp and Glu are (-)…

A: Basic amino acids are those amino acids that have positively charged side chains (are basic amino…

Q: Which of the following is true about a peptide bond: Electron delocalization occurs between the…

A: A peptide bond is formed between the α-nitrogen atom of one amino acid and the carbonyl carbon of…

Q: Which of the following require Hydrogen Bonds to maintain it's structure? Mark all that apply.…

A: Biomolecules are organic molecules made up of mainly carbon and hydrogen but there are other…

Q: As you increase the number of alanine residues in the oligopeptide chain: The pKas of the…

A: The amino acids which  contain  ionizable side chain groups  can participate in an acid-base…

Q: In the side chain of the amino acid E, there is a carboxylate group attached to the—     α-carbon…

A: An amino acid is an organic molecule and consists of a basic amino group (−NH2), an acidic carboxyl…

Q: Linus Pauling’s a-helix structure (found in hemoglobin, myoglobin, actin, myosin, and keratin) is…

A: Proteins are linear polymers, which are composed of monomer units called amino acids. The function…

Q: The side chain of which amino acid is most likely to be found in the center of a tightly packed,…

A: Introduction Amino acids are molecules that combine to form proteins and are the building blocks of…

Q: Which of the following amino acids are involved in O-glycosylation linkage? O Tyrosine O Asparagine…

A: O  linked glycosylation is a type of post translational modification of polypeptides. It come under…

Q: Which of the following is true about a peptide bond: Electron delocalization occurs between the…

A: Electron delocalization reaction in the peptide bond is given below.

Q: Which of the following amino acid types is mostly likely to be hydroxylated in a posttranslation…

A: Hydroxylation is defined as a process of oxidation reaction where the carbon-hydrogen bond in the…

Q: In monounsaturated fatty acids, the presence of a double bond is usually found at the position…

A: Fatty acids are important micromolecules which combine together to form lipids in plants, animals…

Q: A protein that is normally found in an aqueous solution has these amino acids in its primary…

A: Proteins are composed of the linear chain of amino acid sequences attached via peptide bonds.…

Q: What property is exhibited by proteins which allows them to absorb large quantities of water?…

A: Proteins are organic molecules composed of amino acids. The polar nature of proteins makes them…

Q: Which of the following amino acids undergoes phosphorylation?     Histidine     Glutamic Acid…

A: Post-translational modification of proteins  refers to the covalent enzymatic modification of…

Q: Polar amino acids are largely exposed in the exterior of the protein and in contact with aqueous…

A: Proteins are polypeptide molecules that are made up of 20 different types of amino acids. Amino…

Q: Choose each statement that is correct. The N-terminus of glucagon is positively charged at pH 7. The…

A: Proteins are the macromolecules composed of amino acids bound together by peptide bond between amino…

Q: The amino acid that is not optically active is ----- This is because its R group a. proline; forms a…

A: All amino acids except glycine are optically active i.e. they rotate the plane of plane polarized…

Q: Disulfide bridges can form in proteins that are in an oxidizing environment. They form between what…

A: The structure of the protein is important for its function. Protein's structure is stabilized by…

Q: Within a naturally-occurring polypeptide, under neutral pH conditions (pH = 7.0), which of the…

A: Proteins are macromolecules composed of polypeptides which contains more than 20 amino acids. Each…

Q: Which of the following correctly describes the 3 amino acids that are most likely to undergo…

A: Amino acids are organic compounds composed of carbon, hydrogen, oxygen, and nitrogen. They are the…

Q: There are 20 primary amino acids that make up all proteins. But why those 20? Why Leucine? Arginine?…

A: The name amino acids indicates that it is a compound containing both amine group and a carboxylic…

Q: Within a polypeptide chain is the following amino acid sequence, which reads in the N terminus to C…

A: Proteins are heteropolymer that are made up of different aminoacids.   These amino acids joined…

Q: 34. Amino acid found in the surface is while amino acid found in the interior is A. Hydrophilic;…

A: Amino acids found on the surface generally need to interact with water, thus they need to be polar…

Q: Which of the following about the glycosylation of proteins in the ER is false?

A: a. Dolichol phosphate serves as a lipid carrier. This statement is false. Dolichols play a role in…

Q: Which of the following amino acids would you expect to find more often near the center of a folded…

A: Proteins are biomolecules made up of long chains of amino acids. It is macronutrient that is…

Q: The pKa of an acid depends partly on its environment. Predict the effect of each of the following…

A: The pKa represents the pH of the medium at which the zwitterionic amino acid assumes most stable…

Q: The R group of aspartic acid is –CH2COOH. What will the structure of the amino acid be at a very…

A: Amino acids are biomolecules that contain amino and carboxylic acid groups. These groups are present…

Q: The enzyme thermolysin cleaves peptide bonds on the C-terminal side of the amino acids lle. Tyr,…

A: Amino acids are monomeric units that form a peptide chain. The amino acids are linked together by a…

Q: In the polypeptide above, one of the following statements is false: OH CH, CH CH, H-H-ビーNH-CH NH-CH-…

A: Polypeptides are the sequences of amino acids which are joined by peptide bonds. Where α-carboxylic…

Q: The carbohydrate portion of some glycoproteins may serve as a cellular recognition site. To perform…

A: Oligosaccharides act as recognition site and this recognition site may vary from cell to cell. This…

Q: More specifically, the component monosaccharides are (D-galactose, L-galactose), (D-glucose,…

A: Here the two matters of concern are: 1)  L and D isomers: Depending on the position of the –OH group…

Q: Select the true statements about protein secondary structure. In a B-pleated sheet, the side chains…

A: Amino acids are of different structure.

Q: Protein folding results in a thermodynamically conformation. In folded proteins, polar groups tend…

A: Protein folding is the physical process by which a protein chain acquires its native 3-dimensional…

Q: Why do amino acids display a lower pK, value for the carboxylic acid group compared to acetic acid?…

A: Amino acids are biomolecules where carbon atom is bonded to 4 groups; a carboxylic acid group, an…

Q: These amino acids form …….. interaction in collagen structure which makes the structure stronger and…

A: Collagen is one of the most abundant form of protein present in body. Typically a collagen is long,…

Q: Which of the following statements about nucleic acid is INCORRECT? Coenzyme A is a protein, not…

A: Nucleic acids are the biopolymers, or large biomolecules, essential to all known forms of life. The…

Q: Which of the following best describes the secondary structure of a protein? D5 Peptide bonds…

A: Biochemistry is a branch of science that deals with the study of the structure and function of…

Q: A UNFOLDED linear polymer of amino acids connected by covalent bonds is known as a____________ and…

A: The amino acids are joined covalently by the peptide bond, which is present in between α carboxylic…

Q: The two amino acids having R groups with a negative net charge at pH 7.0 are Cysteine and methionine…

A: Amino acids are the monomers of polypeptide chains/ proteins. Two amino acids are linked to each…

Q: A protein is made up for two polypeptides that differ in shape.  Each polypeptide has one domain.…

A: The proteins have different levels of structure starting from primary to quaternary structure. The…

Q: Which of the following are part of an amino acid? Select all that apply. ONitrogen containing base O…

A: Biomolecules are organic molecules made up of mainly carbon and hydrogen but there are other…

Q: Which of the following enzymes creates a covalent bond that links amino acids in a polypeptide?…

A: In a protein various amino acids are linked together by peptide Bonds formed between the N-terminal…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.