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 transfer of genetic material between bacteria through direct cell to cell contact. b. it refers to introduction of genetic material into animal cells. c. it refers to genetic material taken up from the environment through bacterial cell walls.

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.

Which organism can most likely be classifild as domain bateria

Abody cell has been growing and at synthesis proteins.in the nucleus of this body cell,dna replication is taking place. and a copy of the cells genetic material is copied.which of the following is the best conclusion you can make about the life cycle of this cell ? a) the cell is ready to undergo mitosis.and a chemical signal will send the cell to prophase b)the cell is undergoing meiosis and will cross over the genetic material next c)the cell is in the s phase of interphase and will move next to the g2 phase d) the cell is in the g2 phase of the interphase and is ready to begin diving