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A scientist finds an unusual object and decides to study it.
Which observation indicates that it is a living thing that is multicellular?
a. It can be found in water.
b. It has membrane-bound organelles.
c. It possesses an uneven shape.
d. It is motile.

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The best answer is B.

The cells of a multi cellular organisms are called eukaryotic cells and have:

1. a membrane-bound nucleus

2. numerous membrane - bound organelles including the endoplasmic reticulum, Golgi apparatus, chloroplasts and mitochondria.

3. several rod-shaped chromosomes.

Because a eukaryotic cell's nucleus is said to be surrounded by a membrane, it is said to have a true nucleus.  Organelles (meaning "little organ")  have specialized cellular roles just like the organs of  the body have specialized roles.


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