AS 219 Quiz 2 key 1 PDF

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Quiz 2 version 1 for AS 219 for Fall 2018...

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AS 219 Principles of Nutrition Quiz 2 (20 pts) Name September 10, 2018

No Name, NO Points

BE SPECIFIC!!!!!!

1. Fat supply ______2.25____________ times as much energy as carbohydrates 2. Phospholipids are components of the __ ____cell membrane_____________ 3. The primary means of lipid storage is ____triglycerides_ _______________________. 4. Cellulose has ___beta__________ 1,4 linkages and starch has ____alpha__________ 1-4 linkages of glucose molecules. 5. True or False: Microbes can digest cellulose? 6. What are the starch two primary polysaccharides? (2 pt) Amylose and Amylopectin 7. Explain how the Maillard reaction limits protein availability (2 pts) Excessive heat binds CHO to the amino terminal of protein making the protein unavailable to the animal 8. What is a True Protein? ( 2 pt) Composed only of amino acids – no NPN 9. What are two consequences of feeding excess protein? (2 pt) Used by the body for energy Greater excretions of N by animals (Environmental impacts) 10. List three essential amino acids (3 pts) Phenylalanine

Tryptophan

Histidine

Valine

Isoleucine

Arginine

Threonine

Methionine

Leucine

Lysine 11. Provide a function for each to the nutrients listed below (1 pts per nutrient) a. Carbohydrate b. Protein c. Fat

Answers for 11: Carbohydrate Source of energy Source of heat Building blocks for other nutrients (triglycerides and glycoproteins) Animal Body converts to fat for energy storage Frame work for RNA and DNA

Protein Structural unit of the body: synthesis of muscle & connective tissue Muscle contraction Enzyme-catalyzed reactions Gene expression Hormone-mediated effects Protection Regulation Storage of nutrients and O2 Cell structure Transport of nutrient on O2 Fats Energy source Source of heat, insulation, and body protection Source of essential fatty acids Carrier for fat-soluble vitamins Precursors for steroid hormone synthesis Parts of cell membranes...