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Health, 22.06.2019 02:30
Aperson who doesn't have enough calcium in his or her diet is at risk for developing bones that are weak and break easily. this condition is known as a. osteoporosis. b. crohn's disease. c. celiac disease. d. hemophilia.
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Health, 22.06.2019 13:30
Exercise has no positive effects on the nervous system? true or falseu
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Health, 23.06.2019 04:00
Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.
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Health, 23.06.2019 05:00
What nutrients prevent osteoporosis? a. all vitamins and minerals b. calcium, vitamins c, d, and k, and magnesium c. protein d. carbohydrates
Answers: 2
Explain why atom molecules move at different speeds depending on whether they are in liquids or soli...
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English, 25.02.2021 22:30
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