BIOMOLECULES AND ENZYMES

BIOLOGY

AMINO ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All hydrophobic aminoacids (valine, leucine, isoleucine etc) share which of the following properties?
A
polar uncharged R-groups
B
non-polar uncharged R-groups
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Expert-Verified Answer. (C) Nonpolar uncharged R groups is the property shared by all hydrophobic amino acids.

Detailed explanation-2: -There are five amino acids that are polar but uncharged. These include serine, threonine, asparagine, glutamine and cysteine.

Detailed explanation-3: -The non-polar amino acids (shown here) include: alanine, cysteine, glycine, isoleucine, leucine, methionine, phenylalanine, proline, tryptophan, tyrosine and valine.

Detailed explanation-4: -The nonpolar amino acids are hydrophobic, as they tend to segregate away from water for reasons that we will explain later. In contrast, the polar amino acids are those with polar bonds in their side chains. Polar amino acids are hydrophilic, meaning that their side chains interact strongly with water.

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