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Question
Which of the following statements concerning protein structure is/are correct?1) The primary structure of a protein is defined as its sequence.
2) Secondary protein structures include the alpha helix and beta sheet.
3) Disulfide linkages are sometimes formed by the glycine which can significantly effect the protein shape.
A) 1 only
B) 2 only
C) 3 only
D) 1 and 2
E) 1, 2, and 3
Answer
This answer is hidden. It contains 1 characters.
Related questions
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The overall shape of a protein is maintained by
A) hydrogen bonding.
B) ionic bonds.
C) dipole"dipole bonding.
D) covalent bonds.
E) all of these
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A) Fibrous proteins tend to form long, water-soluble fibers, while globular proteins tend to form compact, water-soluble shapes.
B) Fibrous proteins tend to form long, water-insoluble fibers, while globular proteins tend to form compact, water-soluble shapes.
C) Fibrous proteins tend to form long, water-insoluble fibers, while globular proteins tend to form compact, water-insoluble shapes.
D) Both fibrous proteins and globular proteins tend to form water-soluble structures of about the same shape.
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A) sp2
B) sp3
C) sp
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A) 3
B) 4
C) 1
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Q:
Which of the following statements concerning aromatic hydrocarbons is/are correct?
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Which of the following is a geometric isomer of the structure given below?A) B) C) D) E)
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A) The pi electrons are localized above and below a plane defined by the carbon and hydrogen atoms.
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Q:
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Q:
Which of the following statements is true concerning the two compounds 2,3-dimethylpentane and 2,4-dimethylpentane?
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B) Because the two compounds are structural isomers, they should have identical chemical properties.
C) Because the two compounds are structural isomers, they should have identical physical properties.
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E) Because the two compounds are geometric isomers, one should be cisand the other should be trans.
Q:
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A) 3 electrons
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Q:
Transition metals can be distinguished from main-group metals by the fact that
A) main-group metals have only +1 or +2 oxidation states.
B) transition metals have higher relative atomic masses than main-group metals.
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Q:
Which of the following is not a transition-metal?A) cobaltB) rutheniumC) rhodiumD) vanadiumE) aluminum
Q:
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Which of the following salts would not be expected to be colored in aqueous solution?A) CoCl2 B) FeCl2C) CuCl2D) CuClE) CrCl3
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Which of the metal ions in the following complex ions has a d5electron configuration?A) V(H2O)62+B) RhCl64-C) Co(CN)4-D) Fe(CN)63-E) Mo(NH3)63+
Q:
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A) [Ti(H2O)6]2+
B) [V(H2O)6]3+
C) [Fe(H2O)6]3+
D) [Cr(H2O)6]3+
E) [Sc(H2O)]63+
Q:
Which of the following compounds can exhibit optical activity?
A) [Co(NH3)4Cl2]Cl
B) [Co(NH2CH2CH2NH2)3]Cl3
C) Na2[CoCl4]
D) [Co(NH3)6]Cl3
E) Cr(CO)6
Q:
How many optical isomers do the cisand transisomers of [Co(en)2Br2]+have?
A) cis, 1 and trans, 1
B) cis, 2 and trans, 0
C) cis, 0 and trans, 0
D) cis, 0 and trans, 2
E) cis, 2 and trans, 2