1. Which of the following is NOT a weak noncovalent bond? A. Disulfide bond B. Ionic...
1. Which of the following is NOT a weak noncovalent bond?
A. Disulfide bond
B. Ionic interaction in aqueous solution
C. Hydrogen bond
D. Van der Waals interaction.
2. Which of the following amino acid is polar?
A. Valine
B. Alanine
C. Glutamine
D. Glycine
3. Which of the following solution has the highest pH?
A. 0.1 M HCl
B. 0.1 M NaOH
C. 1 M NaOH
Homework Answers
Q1 option A disulphide bond.
Disulphide bonds are covalent bonds. Disulphide bonds are formed between two thiol groups. I. e, R - SH groups. R is alkyl group. Disulphide bonds are seen in proteins. Also seein immunoglobulin liking the two heavy chains.
2 polar amino acids are only 6
Answer is glutamine and alanine. Other than glutamine, serine, alanine, threonine, tyrosine, asparagine, cysteine are also polar.. Polar amino acids are hydrophilic or water loving.
3 highest PH refers to alkaline PH. In option a HCI is acidic so pH will be low. NaOH is basic so PH will be high. Among 0.1M and 1M. 1M is a highly concentrated solution so 0.1M NaOH will have a higher pH,. option c.
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