Diatoms are mostly asexual members of the phytoplankton. diatoms obtain nutrition from functional chloroplasts and each diatom is encased within two porous, glass-like valves. which question would be the most important for one interested in the day-to-day survival of individual diatoms?

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

1 is the answer to this problem