test chap 2 - Begin BIO 1371 Unit 2 Post Exam...

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Begin: BIO 1371 Unit 2 Post Exam   Question 1 ________ is fat soluble, produced in the skin on exposure to UV radiation, and necessary for  normal bone growth and function. Vitamin K Vitamin D Vitamin A Cortisol Question 2 It is the difference in the R group that makes each amino acid chemically unique. True False Question 3 Match the following: Legs moving the pedals of a bicycle. When the bonds of ATP are broken, energy is released to do cellular work. Energy that travels in waves. Part of the electromagnetic spectrum. Represented by the flow of charged particles along a A . Chemical energy B . Electrical energy C . Radiant energy D . Mechanical energy D. B. C.
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conductor, or the flow of ions across a membrane. Question 4 Select which reactions will usually be irreversible regarding chemical equilibrium in human  bodies. glucose to CO 2 and H 2 O ADP + Pi to make ATP glucose molecules joined to make glycogen H 2 O + CO 2 to make H 2 CO 3 Question 5 If atom X has an atomic number of 74 it would have which of the following? 37 electrons 37 protons and 37 neutrons 37 protons and 37 electrons 74 protons Question 6 Lipids are a poor source of stored energy. True False Question 7 Match the following: A.
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Can be measured only by its effects on matter. Anything that occupies space and has mass. Although a man who weighs 175 pounds on Earth would be lighter on the moon and heavier on Jupiter, his ________ would not be different. Is a function of, and varies with, gravity. A . Matte r B . Weig ht C . Mass D . Energ y Question 8 In general, the lipids that we refer to as oils have ________. a high degree of saturated bonds a high degree of unsaturated bonds a high water content long fatty acid chains Question 9 Which of the following is not considered a factor in influencing a reaction rate? concentrat ion D. A. B. C.
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temperatu re time particle size Question 10 Carbohydrates are stored in the liver and muscles in the form of ________. cholester ol triglyceri des glycogen glucose Question 11 Isotopes differ from each other only in the number of electrons the atom contains. True False Question 12 The acidity of a solution reflects the free hydrogen ions in the solution True False Question 13 Carbohydrates and proteins are built up from their basic building blocks by the ________.
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removal of a carbon atom between each two units removal of a water molecule between each two units addition of a water molecule between each two units addition of a carbon atom between each two units Choose the answer that best describes HCO 3 - . a bicarbonate ion a weak acid a proton donor common in the liver Question 15 Current information suggests that omega-3 fatty acids decrease the risk of heart disease.
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