Biology, 01.11.2019 00:31 miacervenka
Oxygen is important in cellular respiration but it does not come into the reaction until the final stage and acts as the?
an additional source of energy
an enzyme in the reaction
the waste product of respiration
the final hydrogen acceptor
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Biology, 22.06.2019 09:00
The two tubes contain bromothymol blue. after 24 hours, what will the color of the water be in tube b? a. green (it won't change) b. yellow c. blue d. colorless (clear)
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Biology, 22.06.2019 10:30
Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
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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 15:00
Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective
Answers: 1
Oxygen is important in cellular respiration but it does not come into the reaction until the final s...
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