Worksheet:
1. Draw the structure of Leucine? Explain why Leucine is considered as a hydrophobic amino acid?
2. Draw the structure of Lysine? Explain why Lysine is considered as a basic amino acid?

Here's what I get

Explanation:

Most of the common amino acids have the general formula RCH(NH₂)COOH.

We call the R groups the side-chains.

They account for the properties of the different amino acids, and we classify the amino acids according to the nature of the side chains.

1. Leucine

Leucine contains a four-carbon sidechain — an isobutyl group.

Alkyl groups are nonpolar and hydrophobic, so leucine is a hydrophobic amino acid.

2. Lysine

Lysine contains four carbon atoms and an NH₂ group.

Amino groups are basic, so lysine is a basic amino acid.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

bcde is the incorrect answer it is a