Biology, 19.07.2019 11:30 smelcher3900
"this type of membrane lines a body cavity that does not open directly to the outside."
Answers: 1
Biology, 21.06.2019 19:30
Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers
Answers: 2
Biology, 22.06.2019 12:00
Which of the following is not associated with invasive species?
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?
Answers: 1
Biology, 22.06.2019 16:30
Which part of the spine is likely to cause a nerve signal to travel faster? a. backbones b. white matter c. nuclei d. gray matter
Answers: 2
"this type of membrane lines a body cavity that does not open directly to the outside."...
Mathematics, 15.04.2020 17:20
History, 15.04.2020 17:21