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Anything that will dissolve easily in water is classified as:

The role of red blood cells, or erythrocytes, is to carry _____ through the circulatory system.

The role of red blood cells, or erythrocytes, is to carry _____ through the circulatory system.

Base your answer to the following question on the structures represented in the diagram below. What is the relationship between these three structures?

What type of cell is NOT duplicated during the cellular division known as mitosis.

What type of cell is NOT duplicated during the cellular division known as mitosis.

Briefly, describe how nitrogen enters the ecosystem from the atmosphere.

Which is the correct order of gene expression? 

Which of the following could describe the role of the nucleus in the cell?

Which of the following is found in all organisms?