Biology, 05.07.2019 13:30 ayoismeisjjjjuan
Aroller coaster car picks speed as it rolls down a slope. as it starts down the slope, its speed is 4m/s. 3 seconds later, at the bottom of the slope, its speed is 22m/s. find its acceleration.
Answers: 1
Biology, 21.06.2019 15:10
How many variables are altered in a good experiment? a.1 b.0 c.2 d.3
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Biology, 22.06.2019 12:30
50 points! which of the following is an inference? a burning candle is extinguished when it is covered with a jar. the candle burns longer than expected in a jar that has a plant in it. a plant lives longer than expected in a jar that has a burning candle. there is more oxygen in the jar because there is a plant in it.
Answers: 2
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?
Answers: 1
Biology, 22.06.2019 15:10
Abacteriophage typically attaches to the bacterium and then
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Aroller coaster car picks speed as it rolls down a slope. as it starts down the slope, its speed is...
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