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BIO QUIZZES SPRING 2006

BIO QUIZZES SPRING 2006 - QUIZ 1 A glass of lemon juice has...

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QUIZ 1 Question 1: A glass of lemon juice has a pH of 2 while a glass of grapefruit juice has a pH of 3. How much higher is the H+ concentration in lemon juice than in grapefruit juice? Points Worth: 1 Answer Given: A. ten times as much Question 2: Which of the following is an example of hydrogen bonding? The bond between ___. Points Worth: 1 Answer Given: B. O of one water molecule and the H of a second water molecule
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Question 3: What determines the atomic number of an atom? Points Worth: 1 Answer Given: D. the number of protons in the atomic nucleus Question 4: For an atom to achieve maximum stability and become chemically unreactive, what must occur? Points Worth: 1 Answer Given: A. its outermost electron shell must be filled with electrons Question 5: How is the formation of ions explained? Points Worth: 1
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Answer Given: B. different atoms gain and lose electrons Question 6: A positive unit in an atom is the proton. Points Worth: 1 Answer Given: A. True Question 7: The number of protons in an atom determines its atomic weight Points Worth: 1 Answer Given: B. False Question 8: In salt, sodium and chloride atoms attract each other by forming covalent bonds. Points Worth: 1
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Answer Given: B. False Question 9: In a polar water molecule, the hydrogen region has a positive electrical charge. Points Worth: 1 Answer Given: A. True Question 10: Atomic reactivity depends on the number of electrons in the innermost electron shell. Points Worth: 1 Answer Given: B. False QUIZ 2
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Question 1: What type of chemical reaction results in the breakdown of organic polymers into their respective subunits? Points Worth: 1 Answer Given: C. hydrolysis Question 2: What determines the specific function of a protein? Points Worth: 1 Answer Given: A. the exact sequence of its amino acids Question 3: Which is an energy storage polysaccharide in plants? Points Worth: 1
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Answer Given: B. starch Question 4: Which lipid has four fused rings of carbon atoms? Points Worth: 1 Answer Given: D. sterols Question 5: Which of the following is not a similarity of mitochondria and chloroplasts? Points Worth: 1 Answer Given: C. both possess their own DNA Correct Answer: B. both capture solar energy and convert it into chemical energy Question 6: Both prokaryotic and eukaryotic cells possess ___. Points Worth: 1 Answer Given: D. ribosomes
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Question 7: Which organelle extracts energy from food molecules and uses it to make ATP? Points Worth: 1 Answer Given: A. mitochondrion Question 8: When two monosaccharides become a disaccharide, a water molecule is added Points Worth: 1 Answer Given: B. False Question 9: Fats are made of fatty acids and cholesterol. Points Worth: 1 Answer Given: B. False Question 10: The acid portion of an amino acid is the NH3 group. Points Worth: 1 Answer Given: B. False Question 11: As a cell increases in size, its surface area increases more rapidly than its internal volume.
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