#Question id: 2800
#Unit 2. Cellular Organization
When chromatin is extracted from nuclei and viewed in the electron microscope, its form depends upon the salt concentration to which it is exposed. What is the form of chromatin when it is isolated in isotonic buffers, i.e. same salt concentration as in cells (about 0.15 M KCl)?
#Question id: 824
#Unit 1. Molecules and their Interaction Relevant to Biology
why comparisons of the X-ray structures of hyperthermophilic enzymes with their mesophilic counterparts have failed to reveal any striking differences between them?
#Question id: 10864
#Unit 10. Ecological Principles
Which of the following represent ways in which two ecologically similar species can avoid competing with each other?
#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: 1307
#Unit 4. Cell Communication and Cell Signaling
A defect in which of the following intercellular junctions would allow partially digested material to leak passively between the cells of the small intestine into the abdominal cavity?