Biology
Which one of the following is the correct sequence in the order of decreasing length of the structural parts given below of small intestine in the human body?

Ileum-Duodenum-Jejunum
Jejunum-Ileum-Duodenum
Ileum-Jejunum-Duodenum
Jejunum-Duodenum-Jejunum

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Biology
Which is not a function of the cell membrane?

Keeps materials within the cell separated from the environment outside the cell
Helps control the movement of materials into and out of the cell
Allows the cell to change shape under pressure
Helps substances pass from the cytoplasm into the nucleus

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