Why can't your body produce proteins from carbohydrates and fats alone?
A) Because the amine group of an amino acid has to have a nitrogen atom.
B) Because the side group of an amino acid has to have an oxygen atom.
C) Since the fats are made of nonpolar structures, they cannot combine with the carbohydrates to form proteins.
D) Because the carboxylic acid group must have a nitrogen atom.
Question 2
How does p-type silicon differ from pure silicon?
A) There are other elements with more valence electrons than silicon in the silicon matrix.
B) There are extra positive charges in the silicon matrix.
C) There are no positive charges available.
D) There are other elements with less valence electrons than silicon in the silicon matrix.
E) There are extra silicon atoms resulting in distortion of the silicon matrix.
Traditional animal phylogeny based on body plans.
The beautiful blood vessels of the human body
The a helix, a common secondary structure in proteins
Body mass index table.
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The Body’s Nutritional Requirements