The purpose of a streak plate is to produce colonies of a certain organism. These colonies are formed by encouraging the growth of only one organism, which allows the separation of that organism from a sample containing multiple organisms.Know More
A streak plate is prepared with nutrients that are specifically chosen to support the growth of the desired organism. It may also contain chemicals that are toxic to other organisms. These chemicals will kill any organisms that might contaminate the organism you want to study. This combination should result in a plate of isolated colonies of a desired organism.
As well as isolating chosen organisms, streak plates may also be used to support more investigative study of a particular organism. The nutrients in a streak plate can be manipulated to study their effects on the organism, and by setting up different combinations, the effects of changes to the organism's environment can be tested.
A streak plate can also be used to study an organism's normal morphology and lifecycle. In this case, a streak plate can provide an organism with the ideal ratio and amount of nutrients for optimum reproduction and keep any toxic chemicals from reaching the colony. This permits the study of the organism without contamination or interference from any outside factors.Learn more about Biology
The purpose of mitosis is cell reproduction, regeneration and growth. Mitosis is cell division that occurs in the nucleus of a cell. The result of mitosis is the formation of two cells, called daughter cells, that are genetically identical to the original cell.Full Answer >
Photosynthesis is a process that allows plants to harvest energy in sunlight and store it chemically, by producing sugars. Sugars hold energy in their molecular bonds; when the plant breaks down these bonds, energy is released that the organism can then use. Although green plants are the most famous photosynthesizing organisms, some bacteria, algae and protists carry out the process as well.Full Answer >
A Punnett square is used to make predictions about the likelihood of certain traits occurring in offspring based on the genetics of the parents. This mathematical tool was invented by English geneticist Reginald Punnett in the early 20th century.Full Answer >
General purpose medium in microbiology is a substance that fosters the growth of most types of bacteria. According to the Michigan State University chemistry department, it is usually comprised of a mixture of protein digests and inorganic salts that is hardened by agar.Full Answer >