Eyeglasses<span> (also called spectacles) are</span><span> the most common form of </span>eye wear.<span> They are used to correct or improve many types of vision problems. They are a frame that holds two pieces of glass or plastic, which have been ground into lenses to correct refractive errors.</span>
1. pharynx
2. bronchial tube
3. pleura
4. nasal cavity
5. mouth
6. larynx
7. trachea
8. diaphragm
The excretory system is the system of an organism's body that performs the function of excretion, the bodily process of discharging wastes.
Answer:
D. Serial dilution followed by a colony forming units calculation.
Explanation:
The best way to count bacterial cells such as Salmonella accurately is through serial dilution and calculation of colony forming units.
Serial dilution is made using a petri dish containing appropriate culture medium for Salmonella growth. In this petri dish, with the help of an inoculation loop, the suspension containing the Salmonella will be scratched in the middle of the petri dish. Then, the inoculation loop will be passed over the salmonella streaks and will be dragged to the other side of the plate, where the loop will be scratched halfway through this space. The inoculation loop should again pass over the new salmonella streaks and be dragged through the rest of the petri dish. Then one must wait for the bacterial colonies to grow inside the plate.
Once these colonies are grown, those that appear in isolation will be counted through a specific calculation for the count of salmonella colonies.
