Which one of the following amino acids is actually an imino acid?(A)   Tyrosine(B)   Isoleucine(C)  Proline  (D)  Serine(E)   Methionine

There are more water-soluble lipids than organic-solvent soluble lipids in the nature.  

Aspartate and glutamate are two basic amino acids.

In order to be an animal nutritionist, you should have at least the following knowledge: 

In a protein molecule, some alpha-helixes and/or beta-sheets fold into a compact globular structure. This globular structure (as a subunit) of a protein forms one of the following levels of protein structure.(A) Primary level(B) Secondary level(C) Tertiary level(D) Quaternary(E) 3-Dimension level

Which region (or subdivision) of the stomach does not contain any gastric glands?

In nature, animal and human do not have any metabolic mechanism to regulate the amino acid concentrations in their blood.

For their lives, animals and human actually do not need feed/food per se, but need certain chemicals or nutrients contained in the feed/food.

Which one of the following monosaccharides or oligosaccharides that contains 5 carbon atoms in a single sugar unit?

This molecule called _________________ enters the TCA cycle via fusing with oxaloacetate (OAA).A.  Citric acidB.  Glucose C.  Pyruvate D.  Acetyl-CoAE.   Glucose-6-phosphate