Which of the following defines Element? *
1 point
atom that has gained or lost one or more electrons
substance made of atoms of different elements that are bound together in a
particular ratio
substance made of only one type of atom that cannot be decomposed by chemical
means
two or more atoms linked by covalent bonds, not necessarily a compound
smallest basic unit of matter
Which of the following defines lon?
Doint
Mi
Answers: 3
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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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Organelles found in plant cells that function through photosynthesis to produce glucose from carbon dioxide and water are called — question 21 options: chloroplasts guard cells photosynthons
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If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate
Answers: 1
Which of the following defines Element? *
1 point
atom that has gained or lost one or more el...
atom that has gained or lost one or more el...
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