Answer:
The option 'All cells contain a nucleus' is not a part of the cell theory.
Explanation:
The cell theory proposed by scientists illustrates that every organism whether prokaryotic or eukaryotic is made up of a cell or different kinds of cells. It also that explains that cells are made from living things. According to the cell theory, cells are termed as the basic unit of life, without which life is not possible.
The cell theory does not claim that every cell must have a nucleus because many cells like cells of prokaryotes lack nucleus. Their genetic material is dispersed in the cytoplasm.
They would most likely suffer from blood problems and/or urination problems
It's both B.They can never be depleted and C.They are replaceable by natural means.
Producers provide primary consumers with the chemical energy
they need. Thus, option "B" is correct.
<h3>What are producers?</h3>
Producers in an ecosystem are those organisms that by the use of photosynthesis capture solar energy, water, and carbon dioxide to create energy and produce molecules like proteins and lipids that are crucial for life.
These molecules that the producers create are the ones that the primary consumers eat to survive.
Thus, option "B" is correct.
To learn more about Producers click here:
brainly.com/question/4256197
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