BMS108Exam1Sp_10

BMS108Exam1Sp_10 - EXAM 1 NAME_ CHOOSE THE BEST AVAILABLE...

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EXAM 1 NAME_______________________________ CHOOSE THE BEST AVAILABLE ANSWER 50 Questions, Use Scantron ALSO CIRCLE ANSWERS ON THIS EXAM. TURN OFF YOUR CELL PHONE! 1. Homeostasis refers to the: A. absolute constancy of the internal environment which is primarily maintained by negative feedback loops B. dynamic (relative) constancy of the internal environment which is primarily maintained by negative feedback loops C. absolute constancy of the internal environment which is primarily maintained by positive feedback loops D. dynamic (relative) constancy of the internal environment which is primarily maintained by positive feedback loops E. none of the above 2. Calcitonin hormone acts to lower blood calcium levels. According to the principles of negative feedback, an effective stimulus for increased calcitonin hormone secretion would be; A. the blood calcium concentration rises B. the blood calcium concentration falls C. any change (increase or decrease) would be a stimulus for increased calcitonin hormone secretion D. none of the above. 3. Which of the following would be considered a POLAR covalent bond? A. bond between two carbons. B. bond between sodium and chloride in salt C. bond between hydrogen and oxygen in a water molecule D. bond between a carbon and hydrogen in a hydrocarbon E. bond between two very electronegative oxygens 4. A peptide bond is defined as a(n) A. bond between adjacent amino acids. B. bond between two water molecules. C. bond between carbon and oxygen atoms. D. bond between two carbon atoms which share two pairs of electrons. E. hydrogen bond 5. A molecule is said to be hydrophilic if A. it is soluble in water. B. it is insoluble in water. C. it is non-polar. D. it has covalent bonds E. knowing a molecule is hydrophilic tells us nothing about its solubility. 6. When a person eats, the ingested polysaccharides and disaccharides must be broken down into monosaccharides. The chemical process by which the larger molecules (polysaccharides) are broken down into the smaller molecules is a ______________ reaction, and is _____________. A. condensation; exergonic B. dehydration synthesis; an example of anabolism C. hydrolysis; endergonic D. hydrolysis; exergonic E. dehydration synthesis; exergonic 7. A molecule that contains carbon, hydrogen, and oxygen in a ratio of 1:2:1 [C n (H2O) n ] (such as C 6 H 12 O 6 ) is a A. lipid. B. carbohydrate. C. protein. D. nucleic acid. E. steroid hormone 1
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8. In the formation of glycogen (polysaccharide) from glucose (monosaccharide) A. water molecules are produced. B. water molecules are broken. C. some water molecules are produced and some are broken. D. two previously complete water molecules are joined together. E.
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BMS108Exam1Sp_10 - EXAM 1 NAME_ CHOOSE THE BEST AVAILABLE...

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