Which of the following begins the process of denaturing proteins?

Zwitterions are amino acids that have no net electrical charge because ____

A) ?their side chains are not charged B) ?they migrate to a neutral place in an electrical field C) ?they are essential/indispensable D) ?they have an amino group in their side chain

Answer the following questions true (T) or false (F)

1. Ketogenic molecules cannot be transformed into ketone bodies. 2. Glucogenic amino acids, glycogen, and glycerol can enter into anaerobic glycolysis at specific pathways to produce pyruvate. 3. After the fat-soluble nutrients (vitamins A, D, E, K) have been absorbed through the small intestine, they can enter a metabolic pathway and be converted to energy or be stored as fat for later use.

Among U.S. adults 60 years of age and older, up to _____ have advance directives

a. 20% b. 50% c. 70% d. 90%

Which of the following would decrease the melting point of a fat?

a. making the fat crystals larger b. increasing the proportion of saturated fatty acids in the fat c. changing the double bond configurations from cis to trans d. increasing the number of kinks in the fatty acid molecules