<span>When a cell is in a dynamic equilibrium with its environment, this means that the salt/water concentration inside the cell is equal to the salt/water concentration outside the cell. It is called an equilibrium because no transport of molecules is needed since the concentrations are already the same.</span>
I thing the correct answer is d
Answer:
The correct answer is -
- to match the mystery food sample to a definite positive result (gelatin, oil.)
- to match the mystery food sample to a definite negative result (water)
Explanation:
Adding an indicator or any indicator to an unknown food sample or any sample and then adding the same indicator to the known sample is necessary to check and confirm the positive result and negative result that will help to match with the experiment result.
For positive result adding an indicator to get a definite positive result to mystery food for example gelatin or oil. Similarly for a definite negative result adding it to known food or water.
Replicated chromosomes finish moving towards the poles in Anaphase stage of Mitosis.
<u>Explanation:</u>
The mitosis is the process of cell division producing daughter cells which are identical and has the same number of chromosomes in each as the parent cell.
There are four stages of mitosis, including, Prophase, the initial phase where the cell is being prepared for the mitosis. Next is the Metaphase, second phase, where the replication or duplication of chromosome takes place.
Third in line is the Anaphase, where the duplicated chromosome is pulled on the sides by the centrosome spindle fibres which let the chromosome move and this phase ends with the finishing of shift or move.
Then is the Telophase, fourth and the last phase, when the division has been completed with the two daughter cell out of one parent cell with identical results.
Answer:
When dog excrement reach the bodies of water transported by rainwater, producing the rapid growth of algae, this process is called eutrophication, and involves the crowd out other organisms in the ecosystem.
Explanation:
The dog's excrement contains nitrogen and phosphorus, which produces the enrichment of the body of water, and allows the development of algae in them.
Eutrophication consists of the process by which a water source acquires nutrients, especially nitrogen and phosphorus, which promote the growth of algae, in addition to the increase of other life forms, altering the existing ecosystem.
This process usually occurs with agricultural runoff, where fertilizer residues reach the water and produce its enrichment. It's also possible to observe eutrophication when excrement or other natural waste, rich in nitrogen and phosphorus, reaches a water source.
Eutrophication is also called hypertrophication.
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