In budding yeast, microtubules are nucleated at an MTOC that is embedded in the nuclear envelope as a small, multilayered structure called:

#Question id: 687

#Unit 1. Molecules and their Interaction Relevant to Biology

All of the following are considered “weak” interactions in proteins, except:

#Question id: 688

#Unit 1. Molecules and their Interaction Relevant to Biology

Pauling and Corey’s studies of the peptide bond showed that:

#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?

#Question id: 690

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds?

#Question id: 691

#Unit 1. Molecules and their Interaction Relevant to Biology

Roughly how many amino acids are there in one turn of an alpha helix?

#Question id: 692

#Unit 1. Molecules and their Interaction Relevant to Biology

 In the alpha helix the hydrogen bonds: