Answer:
Blue green algae or cynobacteria
Ribosomes is the organelle common to both prokaryotic and eukaryotic cells. It is the organelle that carries out protein synthesis and decodes the DNA. Both have DNA for genetic material and basic metabolism.
Pure culture can be prepared from a mixture of cultures by using the streak plate method. This enables the bacterial cells to be diluted to obtain a pure culture after many-folds dilution.
Pure culture is the one in which only one species, strain or clone of bacteria are grown. The pure culture enables to scientists to study in detail about its anatomy, lifestyle and potential uses or harms, without the interference of any other microbe.
Streak-plate method is the most commonly used technique in microbiology labs to isolate a single type of bacteria. It is performed by creating the smears of bacteria in zig-zag motion to dilute its concentration.
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Answer:
4,500
Explanation:
The logistic growth model is given by:
Solving for P(t), we obtain:
We are given that:
Therefore:
![1250=\dfrac{500 \times 5000e^{r \times 1}}{(5000-500)+500e^{r\times 1}}\\\\1250[(5000-500)+500e^{r}]=500 \times 5000e^{r}\\4500+500e^{r}=2000e^{r}\\2000e^{r}-500e^{r}=4500\\1500e^{r}=4500\\e^r=3\\$Take the natural logarithm of both sides\\r =\ln 3](https://tex.z-dn.net/?f=1250%3D%5Cdfrac%7B500%20%5Ctimes%205000e%5E%7Br%20%5Ctimes%201%7D%7D%7B%285000-500%29%2B500e%5E%7Br%5Ctimes%201%7D%7D%5C%5C%5C%5C1250%5B%285000-500%29%2B500e%5E%7Br%7D%5D%3D500%20%5Ctimes%205000e%5E%7Br%7D%5C%5C4500%2B500e%5E%7Br%7D%3D2000e%5E%7Br%7D%5C%5C2000e%5E%7Br%7D-500e%5E%7Br%7D%3D4500%5C%5C1500e%5E%7Br%7D%3D4500%5C%5Ce%5Er%3D3%5C%5C%24Take%20the%20natural%20logarithm%20of%20both%20sides%5C%5Cr%20%3D%5Cln%203)
We want to determine the population after another three years. i,e When t=4
Therefore, after another three years, the population will be 4500.
