GE258 Week 2 Study Guide

GE258 Week 2 Study Guide - a Energy currency of living...

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Week 2 Study Guide- GE258- Chemistry 13. The rate of a chemical reaction is influenced by? (p38) The activation energy 14. How many hydrogens are in this structural formula? (p43) 7? *Possible picture on test* 15. Which of the following statements is TRUE regarding enzymes? (p52) Enzymes are: Are highly specific Are efficient Are subject to cellular controls Lowers the activation energy Ending in “-ase” 16. Bases are always: (p41) Are always- Alkaline, Hydroxide ions (OH-) ?17. Which of the following is an example of a hydrogen bond? (p35) Hydrogen bonding= Forms when a hydrogen atom with partial positive charge attracts partial negative charge of neighboring electronegative atom. (Sometimes oxygen or nitrogen) Water bonding closely with other water molecules (H2O). 18. What region of an atom contains the electron? (p31) l Electron outer shells. Electrons move about in a large space surrounding around nucleus . 19. How does RNA differ from DNA? (P55) DNA: Double strands RNA: Single strands
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20. Which of these describes a function of adenosine triphosphate (ATP)? (P55)
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Unformatted text preview: a) Energy currency of living systems. b) It transfers the energy liberated in exergonic catabolic reactions to power cellular activities that require energy (endogenic reactions). Among these cellular activities are muscular contractions. 21. An example of a carbohydrate used as a building block is______________. (P44) Deoxyribose (a type of sugar) is a building block of deoxyribonucleic acid (DNA). 22. A buffer is ____________________. (P44) Buffers are chemical compounds that converts strong acids or bases into weaker acids or bases by removing or adding protons (H+). 23. This type of reaction will convert smaller products into larger reactants. (P38) A synthesis reaction- Anabolism 24. Number 1 in the figure below represents _________________. (Enzyme and substrate) (P52) * Label substrate and enzyme on picture* 25. Which of these terms describes an ionic compound that breaks apart into positive and negative ions in solution? (P33) Ionic compound (breaks positive & negative ions in solution) = electrolyte!!...
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