Int molecular forces of attraction are often important in holding large molecules together. For example, some proteins fold into compact shapes, held together by attractive forces between nearby functional groups. A schematic of a folded protein is shown below, with the protein backbone indicated by a blue-green ribbon, and various appendages drawn dangling from the chain. What type of intramolecular force occurs at site B? D E CH, CHO HOCH, - CH,C C=0-------- H-N C hydrogen bond (CH;l,NH, CH, CH,CH(CHla CH CH, CH,-S S-CH, hydrogen bond CH, CHCH CH helical structure -CH, disulfide bond F van der Waals forces dipole-dipole interactions hydrogen bonding ion-ion interactions O O O O

Introductory Chemistry: A Foundation
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Chapter21: Biochemistry
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Select the single best answer.
Intramolecular forces of attraction are often important in holding large molecules together.
For example, some proteins fold into compact shapes, held together by attractive forces between
nearby functional groups. A schematic of a folded protein is shown below, with the protein backbone
indicated by a blue-green ribbon, and various appendages drawn dangling from the chain. What type
of intramolecular force occurs at site B?
E
NH,
CH,
-HOCH;-
O=C
H-N
hydrogen
bond
CCH,
CH,
CH,-S S-CH,
hydrogen bond
-CH,CH(CHl2 CH
CH,
CH
CHCH
-CH,
helical
structure
| disulfide bond
van der Waals forces
dipole-dipole interactions
hydrogen bonding
ion-ion interactions
Transcribed Image Text:Select the single best answer. Intramolecular forces of attraction are often important in holding large molecules together. For example, some proteins fold into compact shapes, held together by attractive forces between nearby functional groups. A schematic of a folded protein is shown below, with the protein backbone indicated by a blue-green ribbon, and various appendages drawn dangling from the chain. What type of intramolecular force occurs at site B? E NH, CH, -HOCH;- O=C H-N hydrogen bond CCH, CH, CH,-S S-CH, hydrogen bond -CH,CH(CHl2 CH CH, CH CHCH -CH, helical structure | disulfide bond van der Waals forces dipole-dipole interactions hydrogen bonding ion-ion interactions
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