This is the starting molecule for cellular respiration and an important source of energy in cells.
It's determined by the Sperm.
It is the tropic of cancer
The nucleolus is inside the nucleus, and is where ribosomes are made.
Explanation:
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Most flatworms take in food via their mouth, then move it into a digestive gut that attaches to the digestive structures. The food then breaks down and is absorbed out into the rest of the organism. Some have an anus to remove wastes, but most don't and will simply excrete unused food through the mouth.
