BIO201_MH_V3
Topic 2: Chemistry for Anatomy and Physiology Students
Started on Tuesday, September 7, 2021, 4:35 AM
State Finished
Completed on
... [Show More] Tuesday, September 7, 2021, 5:05 AM
Time taken 29 mins 47 secs
Grade 35.00 out of 35.00 (100%)
Question 1
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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
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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
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Subatomic particles located around the nucleus of an atom are
Select one:
a. protons.
b. electrons.
c. neutrons.
d. neutrinos.
e. photons.
Question 4
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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 atomd. hydrogen atom
e. polar covalent bond
Question 16
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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
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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 unitQuestion 18
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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
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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
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Phospholipids are important components of the plasma membrane. What does "E"
represent on the diagram?
Select one:
a. phosphorus
b. oxygen
c. nitrogen
d. polar (hydrophilic) region
e. nonpolar (hydrophobic) region [Show Less]