8. Define organelle 9. What does the cytoskeleton do?
10. What organelle is found on the wall of the endoplasmic reticulum?
11. What do ribosomes do?
12. What is the function of the Golgi apparatus?

8.organelle is any of a number of organized or specialized structures within a living cell.

9.Microtubules and Filaments. The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement.

10.Protein production; in particular for export out of the cell.

11.Ribosomes are the sites in a cell in which protein synthesis takes place. ... Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.

12.The golgi apparatus is a membrane bound organelle found in most cells. It is responsible for packaging proteins into vesicles prior to secretion and therefore plays a key role in the secretory pathway.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

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