#Question id: 2071
#Unit 2. Cellular Organization
Diffusion of ions across membranes through specific ion channels is driven by:
#Question id: 5320
#Unit 11. Evolution and Behavior
Which of the following types of genes or gene families may be created by mutations that occur in one member of a gene pair that arose from gene duplication:?
#Question id: 291
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following types of non-covalent bonds or interactions is thought to be primarily responsible for driving the three-dimensional folding of a protein:
#Question id: 2296
#Unit 2. Cellular Organization
Small metabolites, such as sugar and ions, pass between plant cells via _______
#Question id: 2797
#Unit 2. Cellular Organization
U2AF (U2 auxiliary factor), recognizes