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ANSC 221 Exam 1 Review Guide Questions and Answers.
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ANSC 221 Exam 1 Review GuideQuestions and Answers
What is the first recorded nutritional experiment? - ANS-Book of Daniel in the Bible
What did Beumont discover together with Alexio St. Martin? - ANS-digestion occurs at
the same time but at different rates and that the noises of the digestive system are
contractions
Who was responsible for the health of the Limeys (British Navy)? Why are they called
Limeys? - ANS-Lind (1747)
What was the significance of the single plant feeding experiment? - ANS-proved that we
need to feed a variety of nutrients from various sources
Who named vitamins after vital amines? - ANS-Funk
Who is credited with "Life is a chemical process", and is called the Father of Nutrition? -
ANS-Lavoiser
What are the major differences and similarities in composition between animals and the
plant materials that serve as their food? - ANS-Animals: made up of lots of mineral
(protein) (Ca&P) and store extra energy as fat
Plants: made up of C,H,O, (P&K), and have low protein
Which could best be called the MOST IMPORTANT NUTRIENT? - ANS-water
Which nutrient class provides most of the energy in livestock diets? -
ANS-carbohydrates
Which nutrient class has the most energy per gram? - ANS-fats
Which nutrient class provides energy only after requirements for it are met? - ANS-fats?
Which nutrient classes do NOT provide any energy? - ANS-vitamins, minerals, water
, Which nutrient class is analyzed as crude fuber and NFE? is soluble in ether? is
analyzed by kjeldahl procedure? is analyzed by N X 6.25? - ANS-Crude fiber and NFE =
carbohydrates
Soluble in ether = fats
analyzed by kjeldahl procedure = proteins
analyzed by Nx6.25 = protein
How much energy do fats, carbohydrates and proteins have in relation to each other? -
ANS-4 calories for carbs and protein
9 calories for fats
How much water loss is fatal? - ANS-12%
What are 3 sources of water? - ANS-drinking water
water in feed
metabolic water
What are 3 properties of water that aid animal life? - ANS-high dielectric constant
high specific heat
high latent heat of vaporization
Explain the importance of High Dielectric Constant, High Latent Heat of Vaporization,
and High Specific Heat to the animal, and give an example. What do each of these
mean, and what does their consequence mean for animals? - ANS-High dielectric
constant = high polarity of the molecule, water dissolves many things
High latent heat of vaporization = takes a lot of energy to change water from liquid into
vapor (sweat)
High specific heat = takes a lot of heat to change temperature much, helps maintain
proper body temperature
Which physical principle is working to help cool a dog when it pants? - ANS-high latent
heat of vaporization
Which physical principle is working to help move nutrients to the cells? - ANS-high
dielectric constant
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