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molecular mass of protein _ __
Proteins are large biomolecules, and their molecular masses are typically greater than 10,000 Daltons (Da). For instance, the molecular mass of the protein hemoglobin is approximately 68,000 Da. Therefore, the correct answer is option o4: > 10000.
the polypeptide chains run parallel and are held together by ___ bonds
Polypeptide chains in proteins can be held together by various types of bonds. In the case of parallel polypeptide chains, disulphide bonds (S-S bonds) are one of the key stabilizing forces. These bonds form between the thiol groups of cysteine residues in the chains. Hence, the correct answer is option o1: disulphide.
By which bond the polypeptide chains are held together in fibrous protein ?
In fibrous proteins, polypeptide chains are primarily held together by hydrogen bonds and disulphide bonds. Hydrogen bonds provide stability to the protein's secondary structure, while disulphide bonds confer additional strength and rigidity. Therefore, the correct answer is option o4: 1 & 3.
which protein is insoluble in water,which is present in muscle ?
Myosin is an insoluble protein found in muscle tissues. It plays a crucial role in muscle contraction and is not soluble in water. The other options are either soluble in water or not predominantly found in muscles.
in a-helix shaped protein , polypeptide chain is coild in helix shape approximate amino acids are included per turn of helix
An alpha-helix is a common structural motif in proteins. In an alpha-helix, the polypeptide chain is coiled in a helix shape, and approximately 3.6 amino acids are included per turn of the helix. This precise arrangement allows for the formation of hydrogen bonds that stabilize the helical structure.
which isn’t true reason of denaturation of protein ?
Denaturation of proteins can occur due to various factors such as detergents, changes in pH, and increases in temperature. Therefore, all the listed options (detergent, change in pH, increase in temperature) are true reasons for denaturation, making option 'none' the correct answer as it indicates that none of the given options is an incorrect reason.
Which is the reason of denaturation of protein ?
Denaturation of proteins can be caused by various agents including organic solvents, detergents, and concentrated alkali. These agents disrupt the secondary, tertiary, and quaternary structures of proteins, leading to loss of function. Therefore, the correct answer is 'all'.
in certain clynical chemistry tests removal of all protein materials , which chemical is added to sample ?
Trichloroacetic acid is commonly used in clinical chemistry tests for the precipitation and removal of proteins from samples. It is a strong acid that can denature proteins, making them insoluble and easily separable from the sample.
which is called as coenzyme ?
A coenzyme is an organic component that serves as a cofactor to assist enzyme function. Unlike inorganic cofactors, which are often metal ions, coenzymes are organic molecules, typically derived from vitamins.
Which of the following ions may be co-factor ?
Many enzymes require a metal ion as a co-factor for their catalytic activity. Common examples of such metal ions include $Zn^{2+}$ and $Cu^{2+}$. These ions help in stabilizing the structure of the enzyme and/or participate in the enzyme's catalytic mechanism.
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