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Acid/Base Study MCQ

Acid/Base Study

1. The carbonic acid-bicarbonate buffer system functions mainly to __________.

Neutralize the urine

Take over the removal of CO2 from the plasma when the lungs aren't working properly

Limit ECF pH changes caused by metabolism

Prevent destructive changes in ICF pH due to cellular metabolism

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Answer

Correct Answer: Limit ECF pH changes caused by metabolism

Note: This Question is unanswered, help us to find answer for this one

2. The movement of fluids between cellular compartments ________.

Requires active transport

Is regulated by osmotic and hydrostatic forces

Requires ATP for the transport to take place

Involves filtration

Answer

Correct Answer: Is regulated by osmotic and hydrostatic forces

Note: This Question is unanswered, help us to find answer for this one

3. One of the major physiological factors that triggers thirst is ________.

A dry mouth from high temperatures

A rise in plasma osmolality

Antidiuretic hormone

An increase in potassium levels in the icf

Answer

Correct Answer: A rise in plasma osmolality

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4. Maintenance of normal fluid homeostasis requires all of these except __________.

Extracellular

Alkalosis

Caloric balance

Phosphate

Electrolytes.

Answer

Correct Answer: Caloric balance

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5. An increase in blood co2 levels is followed by a(n) in h+ ions and a(n) in blood ph.

Decrease, decrease

Decrease, increase

Increase, increase

Increase, decrease

Increase, no change

Answer

Correct Answer: Increase, decrease

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6. A ____________ is any mechanism that resists changes in ph.

Buffer

Grudge

Acid

Base

Answer

Correct Answer: Buffer

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7. Of the compounds below, a 0.1 m aqueous solution of ________ will have the highest ph.

KCN, Ka of HCN = 4.0 × 10-10

\NH4NO3, Kb of NH3 = 1.8 × 10-5

NaOAc, Ka of HOAc = 1.8 × 10-5

NaClO, Ka of HClO = 3.2 × 10-8

NaHS, Kb of HS- = 1.8 × 10-7

Answer

Correct Answer: KCN, Ka of HCN = 4.0 × 10-10

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8. Influx of or _ ions result in epsps.

Na+; Ca++

Cl-; Na+

Ca++; Cl-

Cl-; K+

A-; K+

Answer

Correct Answer: Na+; Ca++

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9. The kidneys compensate for respiratory alkalosis by _______.

Conserving bicarbonate ion and excreting H+

Conserving H+ and bicarbonate ion

Conserving H+ and excreting bicarbonate ion

Excreting H+ and bicarbonate ion

Answer

Correct Answer: Conserving H+ and excreting bicarbonate ion

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10. Amino acids include a side group as well as ______.

A central carbon, a hydrogen atom, an amino group, and a carboxyl group.

The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.

Hydrolysis

Amino Acid

Answer

Correct Answer: A central carbon, a hydrogen atom, an amino group, and a carboxyl group.

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11. Lysine can form a salt bridge by interacting with the side chain of ___.

Glu

Gly

Asn

Ser

Pro

Answer

Correct Answer: Glu

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12. In the ionized form of an amino acid, the carboxylic acid end is ________.

Neutral

Positively charged

Soluble in a non polar solvent

Attached to an anime

Negatively charged

Answer

Correct Answer: Negatively charged

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13. An acid with a ph of 6 has ________ hydrogen ions than pure water.

10-fold more

10-fold fewer

100-fold fewer

100-fold more

Answer

Correct Answer: 10-fold more

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14. All of the 20 common amino acids have at least ____ pka values.

Answer

Correct Answer: 2

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15. ______ typically feel slippery when touched.

Acids

Bases

Salts

Neutral Solutions

Answer

Correct Answer: Bases

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16. The addition of hydrochloric acid and ________ to water produces a buffer solution.

HC6H5O

NaOH

NH3

HNO3

NANO3

Answer

Correct Answer: NH3

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17. With solutions of strong acids and strong bases, the word strong refers to _____.

Aluminum bromide

Degree of ionization

[HF] is greater than [H^+][F^-]

Acetic acid, sodium hydroxide

Answer

Correct Answer: Degree of ionization

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18. The structural formulas of amino acids are the same except for the ________.

Carboxyl group.

Alpha carbon.

Amino group.

Side (R) group.

Hydrogen bonding

Answer

Correct Answer: Side (R) group.

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19. The values used in the scale of ph and poh are derived from a system designed by ______.

Curie

Dalton

Sorenson

Gordonsen

Answer

Correct Answer: Sorenson

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20. The addition of hydrofluoric acid and __________ to water produces a buffer solution.

HCl

NANo3

NaF

NaCl

NaBr

Answer

Correct Answer: NaF

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21. In a neutral solution, the [h+] is _____.

1 x 10-12

1 x 10-14

1 x 10-10

Answer

Correct Answer: 1 x 10-14

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22. A solution with ph 4 has __________ the h+ concentration of a solution with ph 8.

1/2

2 times

4 times

10,000 times

1/10,000

Answer

Correct Answer: 10,000 times

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23. A solution of ph 5 has __________ times more hydrogen ions than that of pure water.

100

Answer

Correct Answer: 100

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24. A solution at ph 10 contains __________ than the same amount of solution at ph 8.

100 times

10 times

8 times

Answer

Correct Answer: 100 times

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25. Of the acids in the table below, __________ is the strongest acid.

HCHO_2

HCIO

HOAc and HCHO_2

HOAc

Answer

Correct Answer: HF

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26. Bases dissolve _ and _.

Fats and oils

Sugars and fats

Oils and proteins

None of these

Answer

Correct Answer: Fats and oils

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27. The lower the ph of a solution the ______

Less toxic the solution

Higher the oh- concentration

Greater the number of oxygen atoms

28. The conjugate acid of no2- is ________.

HNO2

H2O

HCO3-

NH2

Answer

Correct Answer: HNO2

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29. The hydrogen atom has one _ and one _.

Proton

Neutron

Electron

Ion

Answer

Correct Answer: Proton

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30. An acid is _____.

Is a versatile solvent

Contains hydrogen

Reduces the hydrogen ion concentration of a solution

Forms covalent bonds with other substances

Increases the hydrogen ion concentration of an aqueous solution

Answer

Correct Answer: Increases the hydrogen ion concentration of an aqueous solution

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31. What was λmax for fescn2+? _____ nm

450

230

430

520

Answer

Correct Answer: 450

Note: This Question is unanswered, help us to find answer for this one

32. The alpha-helix is a component of __________ protein structure.

Primary

Secondary

Both

None

Answer

Correct Answer: Secondary

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33. The ph of a solution of a solution is 4.50. the poh of this solution is ________.

9.50

5.50

6.50

3.50

Answer

Correct Answer: 9.50

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34. The addition of sodium hydroxide and ________ to water produces a buffer solution.

HCl

NaC2H3O2

NaF

HC7H5O2

Answer

Correct Answer: HC7H5O2

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35. An aqueous solution contains 0.100 m naoh at 25.0 °c. the ph of the solution is ________.

1.00

-1.00

7.00

13.0

Answer

Correct Answer: 13.0

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36. A result of the common ion effect is ________

That common ions, such as Na+ (aq), don't affect equilibrium constants

That ions such as K+ and Na+ are common ions, so that their values in equilibrium constant expressions are always 1.00

That the selective precipitation of a metal ion, such as Ag+, is promoted by the addition of an appropriate counterion (X-) that produces a compound (AgX) with a very low solubility

That common ions precipitate all counter-ions

Answer

Correct Answer: That the selective precipitation of a metal ion, such as Ag+, is promoted by the addition of an appropriate counterion (X-) that produces a compound (AgX) with a very low solubility

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37. The single most important factor influencing potassium ion secretion is ________.

Intracellular sodium levels

Potassium ion concentration in blood plasma

The potassium ion content in the renal tubule cells

The pH of the ICF

Answer

Correct Answer: Potassium ion concentration in blood plasma

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38. When you add acid to a solution, _____.

The hydrogen ion concentration increases and lowers the pH

A water molecule that loses a hydrogen ion

The transfer of a hydrogen atom from one water molecule to another

A water molecule that gains a hydrogen

Answer

Correct Answer: The hydrogen ion concentration increases and lowers the pH

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Acid/Base Study MCQ

1. The carbonic acid-bicarbonate buffer system functions mainly to __________.

2. The movement of fluids between cellular compartments ________.

3. One of the major physiological factors that triggers thirst is ________.

4. Maintenance of normal fluid homeostasis requires all of these except __________.

5. An increase in blood co2 levels is followed by a(n) ____ in h+ ions and a(n) ____ in blood ph.

6. A ____________ is any mechanism that resists changes in ph.

7. Of the compounds below, a 0.1 m aqueous solution of ________ will have the highest ph.

8. Influx of ____ or _____ ions result in epsps.

9. The kidneys compensate for respiratory alkalosis by _______.

10. Amino acids include a side group as well as ______.

11. Lysine can form a salt bridge by interacting with the side chain of ___.

12. In the ionized form of an amino acid, the carboxylic acid end is ________.

13. An acid with a ph of 6 has ________ hydrogen ions than pure water.

14. All of the 20 common amino acids have at least ____ pka values.

15. ______ typically feel slippery when touched.

16. The addition of hydrochloric acid and ________ to water produces a buffer solution.

17. With solutions of strong acids and strong bases, the word strong refers to _____.

18. The structural formulas of amino acids are the same except for the ________.

19. The values used in the scale of ph and poh are derived from a system designed by ______.

20. The addition of hydrofluoric acid and __________ to water produces a buffer solution.

21. In a neutral solution, the [h+] is _____.

22. A solution with ph 4 has __________ the h+ concentration of a solution with ph 8.

23. A solution of ph 5 has __________ times more hydrogen ions than that of pure water.

24. A solution at ph 10 contains __________ than the same amount of solution at ph 8.

25. Of the acids in the table below, __________ is the strongest acid.

26. Bases dissolve _____ and _____.

27. The lower the ph of a solution the ______

28. The conjugate acid of no2- is ________.

29. The hydrogen atom has one _____ and one _____.

30. An acid is _____.

31. What was λmax for fescn2+? _____ nm

32. The alpha-helix is a component of __________ protein structure.

33. The ph of a solution of a solution is 4.50. the poh of this solution is ________.

34. The addition of sodium hydroxide and ________ to water produces a buffer solution.

35. An aqueous solution contains 0.100 m naoh at 25.0 °c. the ph of the solution is ________.

36. A result of the common ion effect is ________

37. The single most important factor influencing potassium ion secretion is ________.

38. When you add acid to a solution, _____.

5. An increase in blood co2 levels is followed by a(n) in h+ ions and a(n) in blood ph.

8. Influx of or _ ions result in epsps.

26. Bases dissolve _ and _.

29. The hydrogen atom has one _ and one _.