Bio 240: Anatomy & Physiology I Lecture Ex # 1 Sunnner 2017 Instructor Dr. Preci
ID: 275890 • Letter: B
Question
Bio 240: Anatomy & Physiology I Lecture Ex # 1 Sunnner 2017 Instructor Dr. Precious Alawuru B. atoms C the heart D. adipose (fat) tissue 20. Two or more atoms of different elements that are chemically bonded together are known as: A. compounds B. ions D, molecules 21, lonic bonds result from A. equal sharing of electrons between noometals B. unequal sharing of eloctrons between nonmetals C. weak atractions between polar molecules D. the transfer of electrons from a metal to a nonmetal, 22. What happens in oxidation-reduction (redox) reactions A. Larger molecules are built from smaller subunits B. Energy is used since these are endergonic reactions C. Atoms are exchanged. D. Electron exchange occurs 23. Foods are broken down into their building blocks by adding water. This would be an example of whichs characteristic of water? A Water acts as a cushion B. Water bas a high beat of vaporization C. Water acts as a reactant D. Water acts as a lubricant 24 Water acts to dissolve molecules in the body. How does water dissolve the salt (NaCT) in your mouth A. Water acts as a solvent because the partial negative charge on the oxygen in water atracts sodum, while the partial positive charge on hydrogen attracts chlonde. This results in the from a salty pretzel? separation of sodium from chloride, thus breaking the ionic bond. B. Water acts as a cofactor for enaymes that dissolve the salt C. When water is added to the NacI, NaCI is broken down by ading OH- to ooe element and H- to the otber. This is known as hydrolysis. 25 In plsmu a typical body fiuid, protein floating sround would be consulered to be which of the following? A. a solvent B. a solute, specifically both a colloid and a sonelectrolyre C. a solute, specifically both a colloid and an electrolyte 26. Electrolytes are charged particles called ions that are dissolved in body fhuids. Which of the following ions would be considered a major anion in the body A. chloride B. sodium C. calcium D. potassiumExplanation / Answer
Answer:
20) Two or more atoms of different elements that are chemically bonded together are known as:
21) Ionic bonds results from:
22) What happens in oxidation-reduction (redox) reactions?
23) Foods are broken down into their building blocks by adding water. This would be an example of which characteristic of water?
24) Water acts to dissolve molecules in the body. How does water dissolve the salt (NaCl) in your mouth from a salty pretzel?
25) In plasma, a typical body fluid, protein floating around would be considered to be which of the following?
26) Electrolytes are charged particles called ions that are dissolved in body fluids. Which of the following ions would be considered a major anion in the body?
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