Respuesta :
Answer:
The Laura tried to grow micro-organisms in culture broth medium in Petri-plates but the microbial growth was not observed even on the fourth day of culture which could be due to:
1. Laura could have not provided the correct broth medium maintaining the with pH and salt concentrations.
2. Microorganisms did not get optimal growth conditions.
3. The bacterial source could have died after the collection which could have lysed after their death and thus no longer visible.
Answer:
The three reasons why Laura may not have observed microbial growth are:
- Microorganisms didn't get ideal development conditions
- The bacterial source could have passed on after the assortment which could have lysed after their demise and subsequently presently not apparent.
- Laura might have not given the right stock medium keeping up with the pH and salt focuses.
Explanation:
Mechanism of Microbial Growth:
- Microbial development alludes to an increment in the number of cells instead of an expansion in cell size.
- Numerous microorganisms are unicellular, which means they are made of just a single cell.
- The size of any unicellular organism is restricted by the limit with regards to the fundamental segments of the cell to help its endurance.
- The answer for developing regardless of cut-off points on cell size is for cells to separate or produce new cells from the first cell. Along these lines, the populace develops albeit the size of the individual individuals from the populace stays stable.
Learn more about microbial growth, refer:
- brainly.com/question/14671212
