Cells

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What is the jellylike substance found in both plant and animal cells called?

What is a group of tissues working together to do a certain job called?

Cells that work together to carry out a certain job is called?

What is the heart an example of?

Which cell has several different shapes?

What do most living things use to turn food into energy?

A group of organs that work together are called an?

What are one celled microorganisms that live in pond water called?