#Question id: 4930
#Unit 11. Evolution and Behavior
Which of the following is the correct sequence of events in the origin of life?
I. Formation of protocells
II. Synthesis of organic monomers
III. Synthesis of organic polymers
IV. Formation of DNA-based genetic systems
#Question id: 14763
#Unit 2. Cellular Organization
#Question id: 27669
#Unit 1. Molecules and their Interaction Relevant to Biology
When Psi is fixed at +165º then allowed region -70º to -170º then this allowed region belong to
(a) Left-handed helix
(b) Right-handed helix
(c) Parallel beta sheet
(d) Antiparallel beta sheet
Choose which of the following is correct
#Question id: 10181
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 689
#Unit 1. Molecules and their Interaction Relevant to Biology
In the diagram below, the plane drawn behind the peptide bond indicates the:
A) absence of rotation around the C—N bond because of its partial double-bond character.
B) plane of rotation around the Ca—N bond.
C) region of steric hindrance determined by the large C=O group.
D) region of the peptide bond that contributes to a Ramachandran plot.
Which of the following best represents the backbone arrangement of two peptide bonds?