#Question id: 720
#Unit 1. Molecules and their Interaction Relevant to Biology
How would a homopolymer of alanine be more likely to form an alpha helix in water or in a hydrophobic medium?
#Question id: 11248
#Unit 10. Ecological Principles
Which factor could not be considered a factor of environmental resistance?
#Question id: 11393
#Unit 9. Diversity of Life Forms
Given that the enzymes that catalyze nitrogen fixation are inhibited by oxygen, what are two ʺstrategiesʺ that nitrogen-fixing prokaryotes might use to protect these enzymes from oxygen?
1. couple them with photosystem II (the photosystem that splits water molecules)
2. package them in membranes that are impermeable to all gases
3. be obligate anaerobes
4. be strict aerobes
5. package these enzymes in specialized cells or compartments that inhibit oxygen entry
#Question id: 949
#Unit 1. Molecules and their Interaction Relevant to Biology
Nitric oxide is produced from which reaction?
#Question id: 31182
#Unit 4. Cell Communication and Cell Signaling