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How Nutrients Get In, And Wastes Out.
Beginning of essay
In a human being, nutrients are necessary for survival. But how are these
nutrients obtained? This report will go into depth on how the food we eat gets
into our cells, and how the waste products that we produce get out of the body.
Also, the unicellular organism Paramecium will be compared with ....
Middle of essay
....ent parts.
Ingestion
Intake of food in the Paramecium is controlled by the needs of the cell. When
food is sensed, the organism guides itself towards the food, and guides it into
the oral groove, then enclosing it in a vacuole. Enzymes are then secreted to
digest the food, which is then absorbed into the cytoplasm and made available to
the various organelles. But, a Paramecium has to be able to move to its food
source, while a human cell has his food brought to it through the circulatory
s.... |
| Number of words: 1869 |
Approximate pages: 7 |
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