In this case study, the main focus has been on the organism vibrio cholerae and the toxin it produces. many organisms are capable of producing toxins that allow for pathogenesis, while others are able to infect the host directly and cause disease. in this activity, you will place the organism in a bin based on its ability to cause an infection, an intoxication, or both.

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?