| A | B |
|---|
| Which technology would recommend to diagnose a suspected tumor in a woman who is pregnant? | ultrasound or MRI |
| Cystic fibrosis is a disease in which excess (blank), a situation prehaps involving defective carrier proteins. | chloride ions are retained. |
| In an ultrasound examination, high-frequency sound waves reflect off body parts to show (blank). | different densities and shapes |
| X rays are (blank) by high -density materials. | absorbed |
| This difference between diffusion and passive transport is that passive transport (blank). | does not require energy |
| 1st step in Koch's postulates | Show that a particular pathogen is always present in the original host. |
| 2nd step in Koch's postulates | Isolate the suspected pathogen from the original host. |
| 3rd step in Koch's postulates | Grow the suspected pathogen from the original hos tin pure culture in the laboratory. |
| 4th step in Koch's postulates | Isolate a colony of bacteria from a sterile agar plate. |
| 5th step in Koch's postulates | Infect a new host with the pure culture |
| 6th step in Koch's postulates | Isolate and culture the pathogen from the new host. |
| 7th step in Koch's postulates | Show that the pathogen from the new host is the same as in the original host. |
| Explain how the arrangement of iron filings around the poles of a horseshoe magnet can be used as a model to illustrate disease clusters. | The distribution of iron filings is nonrandom as in a disease cluster. Also, the poles can be seen as the source of an infection, with the number of cases radiating outward. |
| A disease always present is (blank). | endemic |
| (Blank) requires no energy to move particles across a membrane. | Passive transport |
| Visible light has longer wavelengths and less energy than (blank). | X rays |
| A method to identify substances on the basis of molecular size and electrical charge is (blank). | electrophoresis |
| A nonroandom distribution that shows many cases of a disease in a particular area is an example of a (blank). | disease cluster |
| The underlying idea os (blank) is that a pathogen from a diseased organism will cause the disease in another organism. | Koch's postulates |
| Particles are pumped from areas of lower to higher concentration by (blank). | active transport |
| During an influenza (blank) many people become ill with influenza | epedemic |
| A (blank) uses light rays and lenses to enlarge the image of an object. | light microscope |
| (Blank) uses electricity and magnetism to reveal healthy and diseased tissue. | Magnetic resonance imaging |
