Which conclusion about the growth of new bacterial cells does the experiment support? O Heat helps bacterial cells grow new bacterial cells faster.
New bacterial cells can only arise from preexisting bacterial cells.
The amount of available nutrients impacts the growth of new bacterial cells.
Growth of new bacterial cells depends only on the presence of nutrients.

New bacterial cells can only arise from preexisting bacterial cells.

Explanation:

Option A is wrong because when heat was applied, there was no new bacterial growth. Most likely because the heat killed the bacteria cells. Option C is also wrong as well the third trial had nutrients but no new bacteria cells grew.

Option D is wrong because in Trial 1, there were nutrients and yet no new cells were formed. This means that growth of new cells depends on more than nutrients alone.

This leaves option B as the correct answer which is proven by the lack of growth of new cells when there were no pre-existing ones in trial 3.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

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explanation: