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What is the protein structure (primary, secondary tertiary or quaternary) of Elastin?
Elastin is an important protein in the extracellular matrix. It is elastic and hence present in connective tissue hence enables tissues and the skin to stretch and regain their shape.Elastin...
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2.3) What kind of bonds joins amino acid in a polypeptide chain? <ol><li>Ionic bonds</li><li>Peptide bonds</li><li>Hydrogen bonds</li><li>Double bonds</li></ol>
2.Peptide bonds
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Explain why phosphorus can form five covalent bonds, whereas nitrogen can only form three covalent bonds.
Due to hybridization. Phosphorus only 'needs' three more electrons to get a full valence shell of eight, but you'll notice that it actually has five valence electrons, so in theory...
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Explain why a tertiary carbocation is more stable than secondary carbocation which in turn, is more stable than a primary carbocation
All carbocations carry a positive charge on a carbon atom.In a primary (1) carbocation, the carbon which carries the positive charge is only attached to one other alkyl group R...
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What type of bond exists in the compound CH3OK?
1) polar covalent
2) non-polar covalent
3) ionic
3) a mixture of ionic and covalent bonds
Solution:In the mentioned compound, we have a nonpolar bond between C and H atoms, a polarbond between C and O atoms and an ionic bond between O and K atoms....
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explain why a tertiary carbocation is more stable than secondary carbocation which in turn is more stable than a primary carbocation
The more a charge is dispersed, the more stable is a carbocation. In a tertiary carbocation, the positively charged carbon atom attracts the bonding electrons in the three carbon-carbon bonds, and...
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Give a specific example of a protein that has all the levels of protein structure (primary, secondary, tertiary, and quaternary)
Protein Haemoglobin
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Which is not an intramolecular force? A. London forces B. Metallic bonds C. Covalent bonds D. Electrovalent bonds
D. Electrovalent bonds
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Estimate ΔH for the reaction using bond dissociation energies from Table 7.1. Give your answer in kcal. C6H12O6 has five C−C bonds, seven C−H bonds, seven C−O bonds, and five O−H bonds.
Answer: Reaction is absent All that I can tell about answer is ΔH= ΔERECTANTS BONDS – ΔE PRODUCTS BONDS
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Is Ba(CN)2 ionic or covalent? Is I2F7 ionic or covalent? Is vanadium(III)sulfate ionic or covalent? Is SeF4 ionic or covalent? Is NH4CI ionic or covalent?
Ionic bond forms between the metal and nonmetal. Covalent bond forms between 2 nonmetals with different electronegativity. Ba(CN)2 – ionic I2F7 – covalent V(SO4)3 – ionic SeF4 – covalent NH4Cl...
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