In the early days of germ theory, contagious diseases were thought to be caused by fungi or bacteria. in the 1890s, dmitri ivanovski filtered extracts from diseased tobacco plants and discovered that the disease could be transmitted to new plants through the filtrate. he concluded that the disease was caused by particles smaller than bacteria: the tobacco mosaic virus.
Answers: 2
Biology, 21.06.2019 20:30
Which of the following is a common danger of commercial fishing?
Answers: 1
Biology, 22.06.2019 03:50
Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.
Answers: 1
Biology, 22.06.2019 06:20
Select the correct answer from each drop-down menu proteins are
Answers: 2
Biology, 22.06.2019 12:30
Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?
Answers: 1
In the early days of germ theory, contagious diseases were thought to be caused by fungi or bacteria...
Mathematics, 08.06.2020 21:57
Social Studies, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57