#Question id: 32268
#Unit 2. Cellular Organization
#Question id: 5037
#Unit 5. Developmental Biology
Genes control development by:
#Question id: 658
#Unit 1. Molecules and their Interaction Relevant to Biology
To what level of structure do α-helices belong?
#Question id: 10420
#Unit 6. System Physiology – Plant
A toggle model has been proposed for phytochrome interconversion, according to this model which option is correct?
#Question id: 11035
#Unit 7. System Physiology – Animal
A 72-year-old man had surgery to remove an abdominal tumor. Pathohistologic studies reveal that the tumor mass contains a large number of blood vessels. An increase in which of the following is the most likely stimulus for the growth of vessels in a solid tumor?