The solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane is permeable to iodine & potassium, but not to fructose. Side A is filled with a solution of 20g of fructose, 5g iodine, &60g potassium. Side B is filled with a solution containing 60g potassium, 10g of fructose, & 30g of iodine. Initially the volume of liquid is the same in both arms. Which direction would potassium pass through the membrane (DOK 3)? From Side B to A
Neither direction; the substance is not permitted to pass the membrane
From Side A to B
Back and Forth, between Side A and B ​

Lactic acid and energy are produced in muscle cells during choose 1 aerobic respiration cellular respiration anaerobic respiration cellular division

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?