Biology, 24.07.2019 11:00 gabriellarose2930
Smallpox is a virus with a fatality rate of about 30%, and those that survive the disease have terrible scarring and lingering problems. edward jenner is famous for a now notorious experiment in which he developed the first vaccine for smallpox. in the experiment jenner first exposed a small boy to cowpox, which is relatively harmless. the boy got cowpox and recovered. jenner then exposed the boy to smallpox by walking him through a hospital ward. the boy lived. which conclusion is not valid? a) cowpox virus can be used as a vaccine against smallpox. b) immunity to cowpox virus also grants immunity to smallpox. c) cowpox virus and smallpox virus are probably very similar. d) smallpox virus would be a good choice for a vaccine against cowpox.
Answers: 1
Biology, 21.06.2019 20:00
Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.
Answers: 1
Biology, 22.06.2019 07:00
Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.
Answers: 1
Biology, 22.06.2019 09:00
The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation
Answers: 1
Smallpox is a virus with a fatality rate of about 30%, and those that survive the disease have terri...
Chemistry, 14.12.2020 21:30
History, 14.12.2020 21:30
Mathematics, 14.12.2020 21:30
Mathematics, 14.12.2020 21:30
Geography, 14.12.2020 21:30
Mathematics, 14.12.2020 21:30