BIO201_MH_V3: Chemistry for Anatomy and Physiology (QUESTIONS AND ANSWERS/PERFECT REVISION TOOL)

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 BIO201_MH_V3  Topic 2: Chemistry for Anatomy and Physiology Students Started on Tuesday, September 7, 2021, 4:35 AM State Finished Completed on Tuesday, September 7, 2021, 5:05 AM Time tak... en 29 mins 47 secs Grade 35.00 out of 35.00 (100%) Question 1 Correct 1.75 points out of 1.75 Flag question Question text Intermolecular forces are weak electrostatic attractions that exist between Select one: a. two molecules b. a proton and an electron c. two protons Question 2 Correct 1.75 points out of 1.75 Flag question Question text A cation is Select one: a. a combination of atoms held together by chemical bonds. b. a positively charged ion. c. a negatively charged ion. d. a molecule that conducts electricity when placed in solution. e. an alteration in the three-dimensional structure of a protein. Question 3 Correct 1.75 points out of 1.75 Flag question Question text Subatomic particles located around the nucleus of an atom are Select one: a. protons. b. electrons. c. neutrons. d. neutrinos. e. photons. Question 4 Correct 1.75 points out of 1.75 Flag question Question text The number of atoms in exactly 12 grams of carbon-12 is called Select one: a. Dalton's number. b. Socrates's number. c. Avogadro's number. d. Pasteur's number. e. Le Chatelier's number. Question 5 Correct 1.75 points out of 1.75 Flag question Question text In the reversible reaction, CO2 + H2O ↔ H2CO3 ↔ H+ + HCO3- , a decrease in respiration rate will increase the concentration of CO2 in the blood. What will this do to the amount of H+ in the blood? Select one: a. H+ will increase. b. H+ will decrease. c. H+ will be unchanged. Question 6 Correct 1.75 points out of 1.75 Flag question Question text An atom of chlorine has 17 protons and 18 neutrons. Which of the following statements is true? Select one: a. Chlorine atoms have 18 electrons. b. Chlorine has a mass number of 35. c. Chlorine has an atomic number of 18. d. Chlorine has 35 electrons. e. Chlorine has an atomic number of 35. Question 7 Correct 1.75 points out of 1.75 Flag question Question text Which of the following factors will influence the rate of chemical reactions? Select one: a. temperature b. concentration of reactants c. presence of catalysts d. presence of enzymes e. All of these factors will influence the rate of chemical reactions. Question 8 Correct 1.75 points out of 1.75 Flag question Question text In a reversible reaction, when the rate of product formation is equal to the rate of reactant formation, the reaction is Select one: a. stopped. b. at equilibrium. c. in danger of exploding. d. a net decomposition reaction. e. a net synthesis reaction. Question 9 Correct 1.75 points out of 1.75 Flag question Question text A substance composed of two or more different types of atoms is a(n) Select one: a. compound. b. element. c. ion. d. molecule. e. compound and a molecule. Question 10 Correct 1.75 points out of 1.75 Flag question Question text The presence of water in our bodies allows us to Select one: a. cool the body with sweat. b. maintain a fairly constant body temperature. c. provide an environment for chemical reactions. d. keep tissues moist and reduce friction. e. All of these choices are correct. Question 11 Correct 1.75 points out of 1.75 Flag question Question text Starch is the Select one: a. storage carbohydrate in animals. b. storage carbohydrate in plants. c. nondigestible plant polysaccharide. d. major nutrient for most body cells. e. sugar found in RNA. Question 12 Correct 1.75 points out of 1.75 Flag question Question text Eicosanoids Select one: a. are structural proteins. b. are fat-soluble vitamins. c. are components of the plasma membrane. d. comprise the genetic material. e. play a role in the response of tissues to injuries. Question 13 Correct 1.75 points out of 1.75 Flag question Question text Cellulose is the Select one: a. storage carbohydrate in animals. b. storage carbohydrate in plants. c. nondigestible plant polysaccharide. d. major nutrient for most body cells. e. sugar found in RNA. Question 14 Correct 1.75 points out of 1.75 Flag question Question text Which of the following lists includes only monosaccharides that are isomers of one another? Select one: a. glycogen, glucose, sucrose b. starch, glycogen, cellulose c. glucose, fructose, galactose d. ribose, glycogen, glucose e. deoxyribose, glycogen, starch Question 15 Correct 1.75 points out of 1.75 Flag question Question text Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of atom is found at "C"? Select one: a. hydrogen bond b. water molecule c. oxygen atom d. hydrogen atom e. polar covalent bond Question 16 Correct 1.75 points out of 1.75 Flag question Question text Which of the following organic groups does an enzyme belong to? Select one: a. carbohydrate b. protein c. lipid d. nucleic acid e. vitamin Question 17 Correct 1.75 points out of 1.75 Flag question Question text The mass of a chemical equal to its molecular weight in grams, containing 6.023 x 1023 molecules is a(n) Select one: a. mole b. molarity c. ion d. atomic mass unit Question 18 Correct 1.75 points out of 1.75 Flag question Question text Polysaccharides Select one: a. are formed when sucrose and glucose combine. b. are the smallest carbohydrates. c. contain carbon, hydrogen, and phosphate atoms. d. contain long chains of monosaccharides. e. are not found in plants. Question 19 Correct 1.75 points out of 1.75 Flag question Question text The pH value Select one: a. increases with acidity. b. is measured on a scale from 0 to 10. c. is determined by the concentration of hydrogen ions. d. reflects the sodium content of body fluids. e. decreases with alkalinity. Question 20 Correct 1.75 points out of 1.75 [Show More]

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