Biology, 05.11.2019 06:31 brenda2512
Adialysis bag containing a .4m of nacl solution was submerged in a beaker containing a .6m of nacl solution. the dialysis tubing is permeable to water but not salt. the temperature of both solutions is 23 degrees celsius. determine the initial solute potential for nacl solution in the beaker.
Answers: 3
Biology, 21.06.2019 15:30
Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. when a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. is the behavior of the male goose an example of an adaptation?
Answers: 1
Biology, 22.06.2019 13:00
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?
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Biology, 22.06.2019 16:20
Which example best describes a reflex action? a. eating food when hungry b. coughing when the throat is irritated c. bending down to lift a heavy object d. going for a walk outside
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Biology, 22.06.2019 22:50
Color blindness is a recessive trait. the gene for color blindness is on the x-chromosome. the family tree below shows the trait of color blindness. theonly unknown is the father in the first generation.
Answers: 1
Adialysis bag containing a .4m of nacl solution was submerged in a beaker containing a .6m of nacl s...
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