14) How much water must be added when 125 mL of a 2.00 M solution of HCl is diluted to a final concentration of 0.500 M?
Posted: Fri Jul 15, 2022 4:40 pm
14) How much water must be added when 125 mL of a 2.00 M solution of HCl is diluted to a final concentration of 0.500 M?
A) 125 mL
B) 500 mL
C) 375 mL
D) 750 mL
15) Which of the following statements is not true when describing what happens to a cell with a concentration of 2.5% m/v NaCl is placed into a solution with a 0.9 % m/v NaCl.
A) The cell solution has the higher osmotic pressure.
B) Water flows into the cell from the surrounding solution.
C) The cell expands.
D) The surrounding solution has a higher osmotic pressure.
17) Which of the following substances, when added to a solution of acetic acid (CH3COOH), could be used to prepare a buffer solution?
A) NaOH
B) KNO2
C) CH3COONa
D) HNO3
18) Which of these solutions is the most basic?
A) [OH-] = 2 x 10-6 M
B) [OH-] = 3 x 10-4 M
C) [H3O+] = 4 x 10-10 M
D) [H3O+] = 6 x 10-9 M
19) A noncompetitive inhibitor:
A) changes the shape of the enzyme by attaching elsewhere than the active site
B) occupies the enzyme’s active site
C) denatures the enzyme
D) is irreversible
20) A molecule that is similar in terms of the correct structure to the substrate for an enzyme will probably be a:
A) cofactor
B) regulator
C) competitive inhibitor
D) noncompetitive inhibitor
21) Which of the following is an example of a messenger protein?
A) Hemoglobin
B) Estrogen
C) Pepsin
D) Collagen
22) Sequence of amino acids represents _____ structure of a protein.
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
23) What type of bonding holds the double strand of DNA together?
A) Covalent bonding
B) Ionic bonding
C) Hydrogen bonding
D) Disulfide bridges
24) The sequence of bases in a DNA template is 5'ACATGCAT3". What is the correct sequence in the corresponding mRNA strand?
A) 3'UGUACGUA5'
B) 5'UGUACGUA3'
C) 3'TGTACGTA5'
D) 5'TGTACGTA3'
25) Amino acids are carried to the ribosomes for translation by which type of RNA?
A) Messenger RNA
B) Ribosomal RNA
C) Viral RNA
D) Transfer RNA
A) 125 mL
B) 500 mL
C) 375 mL
D) 750 mL
15) Which of the following statements is not true when describing what happens to a cell with a concentration of 2.5% m/v NaCl is placed into a solution with a 0.9 % m/v NaCl.
A) The cell solution has the higher osmotic pressure.
B) Water flows into the cell from the surrounding solution.
C) The cell expands.
D) The surrounding solution has a higher osmotic pressure.
17) Which of the following substances, when added to a solution of acetic acid (CH3COOH), could be used to prepare a buffer solution?
A) NaOH
B) KNO2
C) CH3COONa
D) HNO3
18) Which of these solutions is the most basic?
A) [OH-] = 2 x 10-6 M
B) [OH-] = 3 x 10-4 M
C) [H3O+] = 4 x 10-10 M
D) [H3O+] = 6 x 10-9 M
19) A noncompetitive inhibitor:
A) changes the shape of the enzyme by attaching elsewhere than the active site
B) occupies the enzyme’s active site
C) denatures the enzyme
D) is irreversible
20) A molecule that is similar in terms of the correct structure to the substrate for an enzyme will probably be a:
A) cofactor
B) regulator
C) competitive inhibitor
D) noncompetitive inhibitor
21) Which of the following is an example of a messenger protein?
A) Hemoglobin
B) Estrogen
C) Pepsin
D) Collagen
22) Sequence of amino acids represents _____ structure of a protein.
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
23) What type of bonding holds the double strand of DNA together?
A) Covalent bonding
B) Ionic bonding
C) Hydrogen bonding
D) Disulfide bridges
24) The sequence of bases in a DNA template is 5'ACATGCAT3". What is the correct sequence in the corresponding mRNA strand?
A) 3'UGUACGUA5'
B) 5'UGUACGUA3'
C) 3'TGTACGTA5'
D) 5'TGTACGTA3'
25) Amino acids are carried to the ribosomes for translation by which type of RNA?
A) Messenger RNA
B) Ribosomal RNA
C) Viral RNA
D) Transfer RNA