Plant cells have cell walls and vacuoles.
The cell wall and the vacuole is what keeps the plant standing up.
The cell wall is a rigid layer outside of the cell.
The vacuole is a space within the cell that contains water. When the plant has a lot of water, it will be rigid and stand up right. If you do not water your plant well, the plant may lose its rigidity.
The answer is b. This can be remembered if you know that photosynthesis creates oxygen. Just remember that 'phytoplankton' starts with 'ph' just like 'photosynthesis', and you'll know that phytoplakton also create oxygen.
ATP is the resource by which the cell gets everything done. ATP is spent in a similar way as money is. ATP is used for its energy to help the cell run efficiently. It earns ATP through energy creation, then has to spend it to perform other vital functions.
Answer: State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis.
Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis.
Analyze sample data.
Interpret the results.
Explanation: