In his work with pneumonia-causing bacteria, Frederick Griffith found that a non-pathogenic strain had been transformed into a pathogenic strain. Which of the following explanations best describes the phenomenon of transformation?
A. It refers to introduction of genetic material into animal cells.
B. It refers to genetic material taken up from the environment through bacterial cell walls.
Answers: 1
Biology, 22.06.2019 02:50
How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.
Answers: 3
Biology, 22.06.2019 11:00
Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.
Answers: 2
Biology, 22.06.2019 14:00
Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d
Answers: 1
Biology, 22.06.2019 18:30
Fungi exist as single cells or as branching networks of multicellular filaments. how does the structure of filaments relate to their function
Answers: 2
In his work with pneumonia-causing bacteria, Frederick Griffith found that a non-pathogenic strain h...
Mathematics, 12.02.2020 01:21
Mathematics, 12.02.2020 01:21
Mathematics, 12.02.2020 01:21
History, 12.02.2020 01:21
Mathematics, 12.02.2020 01:21