There are 100,000 students, staff, and faculty with an account at asu, and when the virus was discovered, there were already 1000 accounts infected and 2000 account recovered from the virus. we can formulate the problem as a standard sir model. the model has a time step size of one hour. from the data of the first hours of the virus spreading through the system we know that α is 0.1 and that it takes half a day for a computer to be recovered (the average time it takes for people to upload and execute a virus destruction program). a: what is the value of r0?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.