Biology, 20.07.2019 01:50 consueloquintan1
Mineral deposits in streams may be extracted by which method? open-pit mining dredging leaching subsurface mining
Answers: 1
Biology, 21.06.2019 16:40
Which of the following is a cause of a dna mutation? o a. the linking of amino acid subunits into a long chain o b. the transcription of dna into rna o c. an error in the repair of damaged dna d. the diffusion of molecules across the cell membrane submit
Answers: 1
Biology, 21.06.2019 20:00
The phylogeny chart shows the evolution of camels. camelus is the modern-day camel. based on this chart, which three statements are true? β modern camels are more related to stenomylus than to eschatius. β stenomylous and modern camels do not share a common ancestor. β modern camels are more related to camelops than to aepycamelus. β pliauchenia and oxydactylus may share similar features. β procamelus and stenomylous may share similar features.
Answers: 2
Biology, 22.06.2019 10:30
What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.
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
Mineral deposits in streams may be extracted by which method? open-pit mining dredging leaching sub...
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