Why are certain amino acids considered essential amino acids?

Why are some amino acids called essential ?

What are essential amino acids? Write the names of the amino acids that are essential for humans.

What are amino acids? Draw a general structure for amino acids.

Differentiate between ketogenic amino acids and glucogenic amino acids

Ketogenic Amino Acids

Which amino acids are exclusively ketogenic?

In Chemistry in Action: The Importance of Essential Amino Acids and Effects of Deficiencies, the term “conditional amino acids” is discussed with respect to histidine and arginine. Why are they considered such?

Which of the following amino acids does not have a chiral carbon? (a) glycine; (b) alanine; (c) threonine; (d) lysine; (e) none of these.

True or False: The side chain of an amino acid differentiates one amino acid from another.

How do essential and nonessential amino acids differ?

Why is Arg often referred to as a basic amino acid? Which other two amino acids are also basic amino acids?

The $20$ standard amino acids are called $\alpha$-amino acids. Certain $\beta$-amino acids are found in nature. Draw the structure of $\beta$-alanine ($3$-amino- $n$-propionate).

The extracellular fluid compartment is composed of _____ and _____.

What types of amino acids are most responsible for the binding of DNA to histones?

A. hydrophobic amino acids

B. polar amino acids

C. positively charged amino acids