Solutions, Colloids and Membranes Verified Test Bank Ch.8 - Organic and Biochemistry 2e Test Bank by Denise Guinn. DOCX document preview.
Test questions for Chapter 8
Solutions, Colloids and Membranes
- The purpose of the kidneys is to
- oxidize drugs.
- store cholesterol.
- digest food.
- remove waste products from blood.
- store urine.
- Which of the following is NOT a cause of renal failure?
- diabetes
- heart attack
- low blood pressure
- severe dehydration
- infection
- Which of the following is a heterogeneous mixture?
- vinegar
- oil and vinegar salad dressing
- lemonade
- bronze
- air
- A _______ has components that are evenly distributed throughout the mixture.
- homogenous mixture
- heterogeneous mixture
- pure compound
- solute
- solvent
- An example of this type of mixture is red blood cells in whole blood.
- homogenous mixture
- suspension
- colloidal dispersion
- solution
- solvent
- A typical ______ contains aggregates of atoms, molecules or ions. It can also contain large molecules distributed throughout the medium.
a. solution
b. solvent
c. mixture
d. colloidal dispersion
e. suspension
- In a colloidal dispersion, the major component is called the
- solvent.
- solute.
- medium.
- colloid.
- solution.
- Pepto-Bismol, the liquid pink antacid that must be shaken thoroughly before administering, is a
a. solution.
b. solvent.
c. homogenous mixture.
d. colloidal dispersion.
e. suspension.
- A _______ settles after mixing and contains visible particles.
- solution
- solvent
- homogenous mixture
- colloidal dispersion
- suspension
- Glucose in the blood is a
a. solution.
b. solvent.
c. homogenous mixture.
d. colloidal dispersion.
e. suspension.
- Table sugar is a
a. solution.
b. solvent.
c. element.
d. molecule.
e. suspension .
- In a solution, the component present in a larger amount is called the
- solvent.
- solute.
- medium.
- colloid.
- solution.
- There are many mixtures in the body. The most common ______ for these mixtures is water.
- solvent
- solute
- medium
- colloid
- solution
- A solute dissolving in a solvent is a _______ because _______.
- physical change; covalent bonds are broken in the process
- chemical change; covalent bonds are broken in the process
- chemical change; ionic attractions are broken in the process
- physical change; covalent bonds are not broken in the process
- chemical change; covalent bonds are not broken in the process
- The chart below illustrates the composition of air. According to this chart,
- nitrogen and oxygen are solutes, while argon and carbon dioxide are solvents.
- carbon dioxide is the only solute in air.
- oxygen, argon, and carbon dioxide are solutes, while nitrogen is the solvent.
- nitrogen is the solute, while oxygen, argon, and carbon dioxide are all solvents.
- nitrogen, oxygen, argon, and carbon dioxide are all solutes in air.
- A wine label states that it is 12 proof, meaning that it contains 6% ethanol. According to this information,
- ethanol is a solute in wine and water is the solvent.
- ethanol is a solvent in wine and water is the solute.
- ethanol and water are both solvents in wine.
- ethanol and water are both solutes in wine.
- wine does not contain any solutes.
- A vial contains 5 mL of 1% aqueous lidocaine, a dental anesthetic. In this solution,
- both lidocaine and water are solutes.
- both lidocaine and water are solvents.
- lidocaine is the solute and water is the solvent.
- lidocaine is the solvent and water is solute.
- there are no solutes nor solvents in this solution.
- We can predict whether or not a solute dissolves in a solvent with the rule “like dissolves like.” This rule means that
- a solute with the same diameter as the solvent will dissolve.
- a solute with the same phase as the solvent will dissolve.
- a solvent with the same polarity as the solvent will dissolve.
- a solute with the same mass as the solvent will dissolve.
- a solute contains some of the same elements as the solvent it will dissolve.
- Is gasoline, which is nonpolar, miscible with water?
- Yes, because they are both liquids
- Yes, because they have similar polarities
- No, because they are both liquids
- No, because they have similar polarities
- No, because they do not have similar polarities
- Is ethanol, a polar organic molecule that can hydrogen bond, miscible with water?
- Yes, because they are both liquids
- Yes, because they have similar polarities
- No, because they are both liquids
- No, because they have similar polarities
- No, because they do not have similar polarities
- Which of the following usually occurs when a molecule dissolves in water?
- The covalent bonds in the molecule break.
- The covalent bonds in water break.
- Covalent bonds between the molecule and water form.
- Covalent bonds between several of the molecules form.
- Hydrogen bonds form between the molecule and water.
- Which of the following pictures best represents ethanol dissolved in water? Note that dashed lines represent hydrogen bonds.
ethanol
- Ethanol dissolving in water is an example of a
- physical change, because each molecule retains its structural integral and no bonds are broken.
- chemical change because all bonds to ethanol are broken.
- chemical change because new bonds form between the hydrogens.
- physical change because ethanol only loses one hydrogen to water.
- chemical change because ethanol has a charge in solution.
- How many ions of each type are produced when Na3PO4 is dissolved in aqueous solution?
- 1 Na3PO4
- 3 Na+, 1 P+, 4 O2−
- 3 Na+, 4 PO43−
- 3 Na+, 1 PO43−
- 1 Na+, 1 PO4−
- Which figure best represents the dissolution of MgCl2 in water?
- Which of the following describes the dissolution of MgCl2 in water?
- MgCl2 → Mg+ + Cl2−
- MgCl2 → Mg2+ + Cl22−
- MgCl2 → Mg+ + Cl− + Cl
- MgCl2 → Mg2+ + 2Cl−
- MgCl2 → Mg+ + Cl−
- When MgCl2 dissolves in water, it produces Mg2+ and Cl- ions. Which statement best describes the interaction between Cl− and water?
- Chloride anions are attracted to the partial negative charge of oxygen.
- Chloride anions are attracted to the partial positive charge of oxygen.
- Chloride anions are attracted to the partial negative charge of hydrogen.
- Chloride anions are attracted to the partial positive charge of hydrogen.
- Chloride anions are not attracted to any part of water.
- When sodium chloride dissolves in water, it forms _______ with water molecules.
- hydrogen bonds
- ionic bonds
- dipole-dipole interactions
- covalent bonds
- ion-dipole interactions
- Sugar is stirred into cold iced tea and only some dissolves. The rest remains a solid. This solution is
- miscible.
- immiscible.
- soluble.
- insoluble.
- saturated.
- Which of the following factors affect the solubility of an ionic compound in a solvent?
- the identity of the ions
- the strength of the electrostatic interactions between the ions
- the temperature of the solvent
- the identity of the solvent
- All of these are factors in solubility.
- Which pair of solvents is NOT miscible?
- hexane and water
- water and methanol
- methanol and ethanol
- hexane and butane
- ethylene glycol (HOCH2CH2OH) and ethanol
- Why do kidney stones form?
- Calcium salt levels in the kidneys reach saturated levels and precipitate.
- Magnesium levels in the kidneys reach saturated levels and precipitate.
- Organic toxins build up in the kidney and precipitate.
- Chloride ions reach saturated levels in the kidney and precipitate.
- All of the above ions and molecules contribute to the formation of kidney stones.
- An electrolyte is a substance that
- dissolves in water.
- does not dissolve in water.
- hydrogen bonds with water.
- produces ions when dissolved in water.
- is an excellent resistor.
- Which of the following does NOT occur when an electrolyte dissolves in water?
- A chemical change occurs.
- The positive and negative ions separate from each other.
- The positive ions interact with the oxygen of water.
- The negative ions interact with the hydrogen of water.
- The resulting solution conducts electricity.
- Which of the following is NOT an electrolyte?
- Na+
- HCO3−
- Mg2+
- HOCH2CH3
- All of the above are electrolytes.
- How does an electrolyte differ from a nonelectrolyte?
- Electrolytes are smaller than nonelectrolytes.
- Electrolytes dissolve in water, while nonelectrolytes are insoluble in water.
- Electrolytes are less polar than nonelectrolytes.
- Electrolytes produce ions in solution while nonelectrolytes do not.
- Electrolytes are more reactive than nonelectrolytes.
- Which of the following substances are NOT physiologically important?
- CO2
- Na+
- glucose
- HCO3−
- All of the above are physiologically important substances.
- Is the solution of MgCl2 in water an electrolyte?
- Yes, because when MgCl2 dissolves, it forms ions
- Yes, because the MgCl2 undergoes a chemical change in solution
- Yes, because MgCl2 and water react with each other
- No, because MgCl2 does not form ions
- No, because MgCl2 in water does not conduct electricity
- Which of the following solutes is most soluble in hexane?
- pentane, CH3CH2CH2CH2CH3
- NaCl
- KCl
- methanol, CH3OH
- acetic acid, CH3COOH
- Capsaicin is responsible for the heat of peppers. It is common practice to fry capsaicin in oil prior to eating. Which part of the capsaicin molecule forms intermolecular attractive force with oil, a nonpolar solvent?
- a
- b
- c
- d
- All of these interact with oil.
- What type(s) of unit(s) are represented on this table?
Lab Result Report | ||
Jane Doe | ||
Blood Component | Value | Range |
Iron | 125 μg/dL | 40−150 |
Glucose | 78 mg/dL | 70−110 |
Chloride | 90 mmol/L | 98−109 |
CO2 | 25 mmol/L | 21−31 |
- % mass/volume
- mass/volume
- moles/volume
- equivalents/volume
- both B and C
- According to the following table, are Jane Doe’s blood test values within normal limits?
Lab Result Report | ||
Jane Doe | ||
Blood Component | Value | Range |
Iron | 125 μg/dL | 40−150 |
Glucose | 78 mg/dL | 70−110 |
Chloride | 90 mmol/L | 98−109 |
CO2 | 25 mmol/L | 21−31 |
- Yes.
- No, glucose is too concentrated.
- No, glucose is too dilute.
- No, chloride is too concentrated.
- No, chloride is too dilute.
- According to a blood test, a patient has a blood iron value of 125 μg/dL. This value means that
- the sample of blood contains 125 μg of iron.
- the patient’s body contains 125 μg of iron.
- the mass of iron in the patient’s blood is 125 μg.
- for every deciliter of body volume, the patient contains 125 μg.
- one deciliter of the patient’s blood contains 125 μg of iron.
- The general equation for determining concentration is
- concentration = amount of solvent/amount of solute.
- concentration = amount of solute/amount of solution.
- concentration = amount of solution/amount of solvent.
- concentration = amount solute/amount of solvent.
- concentration = amount of solvent/amount of solution.
- The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30. mL. Express this concentration in mg/mL (mg per milliliter).
- 0.50 mg/mL
- 2.0 mg/ml
- 5.0 mg/mL
- 45 mg/mL
- 450 mg/mL
- Jane Doe has a blood glucose level of 92 mg/dL. How many grams of glucose does she have in 1 L of her blood?
- 0.00092 g
- 0.0092 g
- 0.092 g
- 0.92 g
- 9.2 g
- According to a blood test, a patient has a blood calcium concentration of 9.7 mg/dL. Express this concentration in mg/mL.
- 970 mg/mL
- 97 mg/mL
- 9.7 mg/mL
- 0.97 mg/mL
- 0.097 mg/mL
- Which container would be the best for preparing 1 L of a 10 g NaCl/L solution? In other words, which container will give the most accurate and precise measure of a large volume?
- volumetric flask
- beaker
- graduated cylinder
- Erlenmeyer flask
- syringe
- To make 1.0 L of a 10. g NaCl/L solution, 10. g of NaCl is weighed and poured into a volumetric flask. What is the next step?
- The next step is to measure out 1.0 L of water, pour it into the container, and mix.
- The next step is to fill the container up to the top of the flask.
- The next step is to fill the container to the 1.0 L mark while swirling to mix.
- The next step is to transfer the NaCl to a new flask.
- None of these. The solute should always be added to the container after the solvent, not before.
- Jane Doe’s blood test showed that her iron is 125 mg/dL. You would like to convert the value into g/L. Which unit conversion converts 125 mg/dL into g/L?
a.
b.
c.
d.
e.
- Jane Doe’s blood test showed that her iron is 125 mg/dL. How many g/L is 125 mg/dL?
- 12,500 g/L
- 1.25 g/L
- 0.00125 g/L
- 125 g/L
- 1250 g/L
- A 1% epinephrine solution is delivered by inhalation to treat asthma. This concentration is equivalent to
- 1 g epinephrine dissolved in 100 mL of water.
- 0.001 g epinephrine dissolved in 1 L of water.
- 1 mg epinephrine dissolved in 100 mL of water.
- 0.001 mg epinephrine dissolved in 1 L of water.
- 1 μg epinephrine dissolved in 100 mL of water.
- How many grams of dextrose are in 100 mL of D5W (5.0% dextrose)?
- 50 g
- 5.0 g
- 0.50 g
- 0.050 g
- 0.0050 g
- How many grams of NaCl are in 350 mL of normal saline (0.9% NaCl)?
- 3150 g
- 315 g
- 31.5 g
- 3.15 g
- 0.315 g
- What volume of a 6.0% solution of ethanol contain 3.0 g of ethanol?
- 5.0 mL
- 6.0 mL
- 10 mL
- 30 mL
- 50 mL
- A solution is prepared by dissolving 1.5 g of NaCl in enough water to produce a total solution volume of 750 mL. What is the concentration of the solution in % m/v?
- 0.20%
- 2.0%
- 0.0020%
- 500%
- 5.0%
- The permissible level of arsenic in drinking water is 10 ppb in the United States. What is the maximum mass of arsenic, in grams, allowable in 1 L of drinking water?
- 10 g
- 1.0 × 10-6 g
- 1.0 × 106 g
- 1.0 × 10-5 g
- No amount of arsenic is allowable in drinking water.
- Drinking water from a well is discovered to have an arsenic concentration of 3.4 × 10-4 g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?
- No, 3.4 × 10-4 g is lower than the permissible value of 1.0 × 10-5 g/L.
- Yes, 3.4 × 10-4 g is higher than the permissible value of 1.0 × 10-5 g/L.
- No, 3.4 × 10-4 g is lower than the permissible value of 1.0 × 10-3 g/L.
- Yes, 3.4 × 10-4 g is higher than the permissible value of 1.0 × 10-3 g/L.
- It is not possible to determine the answer from the information given.
- A patient’s blood test shows that his chloride level is 101 mmol/L. Convert this concentration to units of molarity.
- 1010 M
- 101 M
- 10.1 M
- 1.01 M
- 0.101 M
- How many moles of magnesium chloride (MgCl2) are in 1.31 L of 0.38 M MgCl2?
- 0.498 moles
- 0.50 moles
- 1.49 moles
- 1.5 moles
- 0.29 moles
- How many moles of glucose are in 0.82 L of a 0.13 M glucose solution?
- 0.11 moles
- 0.33 moles
- 6.3 moles
- 1.9 moles
- 0.22 moles
- How many grams of glucose should be weighed out to make 1 liter of a rehydration solution that contains 75 mmol of glucose (the molar mass of glucose is 180 g)?
- 14 g
- 1.4 × 104 g
- 0.42 g
- 4.2 × 10−3 g
- 4.2 × 10−4 g
- Convert 0.015 M Ca2+ to equivalents of Ca2+.
- 0.015 equivalents
- 7.5 × 10−4 equivalents
- 0.030 equivalents
- 15 equivalents
- 0.75 equivalents
- It is normal to have about 100 mM (mmol/L) of chloride (Cl−) in the blood. How many meq is this?
- 1 × 105 meq
- 100 meq
- 1 meq
- 0.1 meq
- 1 × 10−5 meq
- A biologist needs 500 mL of a 10 mM phosphate buffer. The stock solution of the buffer is 100 mM. How much stock solution should be used to make the 10 mM phosphate buffer?
- 500 mL
- 5000 mL
- 50 mL
- 5.0 mL
- 0.5 mL
- A student adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 1.0 L. What is the final concentration of the solution?
- 0.11 mmol
- 110 mmol
- 11 mmol
- 50 mmol
- 5.0 mmol
- A child is given 7.5 mL of a liquid pain reliever as a suspension containing 160 mg/5 mL of the pain reliever. How many milligrams of the pain reliever did the child receive?
- 1200 mg
- 21 mg
- 107 mg
- 1.5 mg
- 240 mg
- Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis. If a typical daily dosage is 660 mg, how many milliliters of 75 mg/mL suspension of cephadrine should be administered daily?
- 660 mL
- 75 mL
- 0.0088 mL
- 8.8 mL
- 1.1 mL
- Carbamazepine is an antiepileptic. A typical daily dose is 1.1 g. If carbamazapine is available as a suspension containing 1.0 g in 5.0 mL, how many mL of the suspension should be administered daily?
- 0.22 mL
- 5.5 mL
- 22 mL
- 220 mL
- 5500 mL
- An order is given to administer 50. mg of furosemide, a diuretic, over the course of 2 hours by IV. If a 500. mL bag contains 200. mg of furosemide, what volume of solution does the patient need to receive over the course of two hours?
- 0.50 mL
- 50. mL
- 130 mL
- 20 mL
- 500 mL
- An order is given to administer 100. mg of furosemide, a diuretic, over the course of 4 hours by IV. If a 500. mL bag contains 200. mg of furosemide, what flow rate, in mL per hour, should be administered to the patient?
- 25 mg/hour
- 25 mL/hour
- 63 mL/hour
- 10 mL/hour
- 250 mL/hour
- Which of the following statements describes one way in which osmosis and dialysis are similar?
- Both involve the movement of molecules from low to high concentration.
- Both involve the movement of molecules from high to low concentration.
- Both involve the passage of a solute through a semipermeable membrane.
- Both require an input of energy.
- Osmosis and dialysis are in no way similar.
- Which of the following statements describes one way in which osmosis and dialysis are different?
- Osmosis is the movement of molecules from low to high concentration and dialysis is the reverse.
- Dialysis is the movement of molecules from low to high concentration and osmosis is the reverse.
- Osmosis refers to the flow of solvent, whereas dialysis refers to the flow of small solutes.
- Dialysis refers to the flow of solvent, whereas osmosis refers to the flow of small solutes.
- In dialysis, colloids cannot cross the semipermeable membrane, but they can in osmosis.
- The cell membrane separates the interior of the cell from its surroundings, but it does allow the passage of some small molecules from regions of higher concentration to regions of lower concentration. This process is called
- osmosis.
- simple diffusion
- dialysis.
- dissolution.
- active transport.
- Which of the following compounds passes most easily through the cell membrane?
- Na+
- glucose
- sucrose
- glycerol
- O2
- If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?
Membrane permeable only to water.
A B
- Water will flow from A to B.
- Water will flow from B to A.
- NaCl will flow from A to B.
- NaCl will flow from B to A.
- Nothing will happen.
- If A contains 3 mmol NaCl and 3 mmol glucose, while B contains 6 mmol NaCl, which of the following will occur?
Membrane permeable only to water.
A B
- Water will flow from A to B.
- Water will flow from B to A.
- NaCl will flow from A to B.
- NaCl will flow from B to A.
- Nothing will happen.
- If the semipermeable membrane only allows the passage of water, what process will to occur?
Semi-permeable membrane
A B
Low concentration
High concentration
- nothing
- mixing
- dialysis
- dilution
- osmosis
- In the following diagram, A is ______ and B is ______.
Semi-permeable membrane
A B
Low concentration
High concentration
- hypotonic; hypertonic
- hypertonic; hypotonic
- A and B are isotonic.
- A and B are both hypotonic.
- A and B are both hypertonic.
- Consider solutions A and B separated by a semipermeable membrane. Which diagram best illustrates what the volumes should look like after osmosis occurs?
Semi-permeable membrane
A B
Low concentration
High concentration
A B
a. b. c. d. e.
A B
A B
A B
A B
A B
- Consider solutions A and B separated by a semipermeable membrane. After osmosis occurs, A is ______ and B is ______.
Semi-permeable membrane
A B
Low concentration
High concentration
- hypotonic; hypertonic
- hypertonic; hypotonic
- A and B are isotonic.
- A and B are both hypotonic.
- A and B are both hypertonic.
- Consider solutions A and B separated by a semipermeable membrane. To which volume would pressure need to be applied to prevent osmosis from occurring?
Semi-permeable membrane
A B
Low concentration
High concentration
- A
- B
- first A, then B
- first B, then A
- It is not possible to prevent this process from occurring.
- Consider the two containers below, which are separated by a semipermeable membrane that only allows the passage of small solutes. If A contains 6% NaCl in water and B contains 3% NaCl in water, which of the following will occur?
Semi-permeable membrane
A B
- The volume of water in A will increase.
- The volume of water in B will increase.
- NaCl will flow from A to B.
- NaCl will flow from B to A.
- Nothing will happen.
- Consider the two containers below, which are separated by a semipermeable membrane that only allows the passage of small solutes. If A contains 6% NaCl in water and B contains 3% NaCl in water, at what point will diffusion stop?
Semi-permeable membrane
A B
- When the volume of water in B is twice as large as the volume of water in C.
- When there is no water left in A.
- When there is no water left in B.
- When the volume of water in A is twice as large as the volume of water in B.
- When the concentration of NaCl is equal in A and B.
- Which term best describes the process illustrated here?
Semi-permeable membrane
time
1 2 1 2
Molecule A
Molecule B
- mixing
- dialysis
- dilution
- osmosis
- None of the above
- The function of a kidney is similar to which part of the diagram below?
Semi-permeable membrane
time
1 2 1 2
Molecule A
Molecule B
- It is similar to the water because the body is primarily composed of water.
- It is similar to molecule A because the kidney contains a lot of urea.
- It is similar to molecule B because the kidney contains a lot of glycogen.
- It is similar to the container, because the kidney’s function is to hold urine.
- It is similar to the semi-permeable membrane because the kidney’s function is to remove waste products but retain proteins.
- The function of dialysate is similar in function to which part of the diagram below?
Semi-permeable membrane
time
1 2 1 2
Molecule A
Molecule B
- the semi-permeable membrane
- container 1
- container 2
- molecule A
- molecule B
- Red blood cells are placed into three solutions, each solution a different concentration of NaCl. One solution is isotonic, one is hypotonic and one is hypertonic with red blood cells. Solution A is _______ and solution C is _______ with the red blood cells.
Solution A Solution B Solution C
- hypertonic; isotonic
- isotonic; hypertonic
- hypotonic; isotonic
- isotonic; hypotonic
- hypotonic; hypertonic
- Red blood cells are placed into three solutions, each solution a different concentration of NaCl. One solution is isotonic, one is hypotonic and one is hypertonic with red blood cells. In which solution have the blood cells undergone crenation?
Solution A Solution B Solution C
- solution A
- solution B
- solution C
- solutions A and C
- solutions B and C
- A person receiving IV fluids must always be given a(n)
- analgesic.
- hypertonic solution.
- isotonic solution.
- hypotonic solution.
- transfusion.
- Which of the following statements explains why whole blood has characteristics of a solution, a colloid, and a suspension?
- Whole blood separates upon centrifugation.
- Whole blood contains many different particles that don’t settle out upon standing.
- Whole blood contains many soluble molecules.
- Whole blood contains particles that range in size and solubility.
- Actually, whole blood is only a suspension because it contains red blood cells.
- This substance in the blood regulates the amount of water in tissues and blood.
- glucose
- urea
- liver enzymes
- potassium
- serum albumin
- An abnormal concentration of this substance in the blood may indicate adrenal gland malfunction or heart attack.
- glucose
- urea
- liver enzymes
- potassium ions
- triglycerides