Drew's+cell+structure+hw

Chapter 3. Cell Structure. 1. What does the cell theory state? A cell is the basic unit of life.

2. Why are cells so tiny? They are the smallest unit of life and everything is made of cells.

3. What are the three main parts of a eukaryotic cell? Plasma membrane, cytoplasm, and organelles

4. Explain how the eukaryotic cell gained mitochondria and chloroplasts. Some of the organelles arose by engulfing prokaryotic cells.

5. What are glycoproteins, and what functions do proteins, including glycoproteins, have in the plasma membrane? Glycoproteins are short chains of sugars that are attatched to protein and lipid molecules. They act as a messenger.

6. What is endocytosis and exocytosis, and how do they occur? Endocytosis is the process where a pouch is formed to envelop a fluid. Exocytosis is a process where a vesicle fuses with the plasma membrane as secretion occurs.

7. The nucleus, ribosomes, and rough endoplasmic reticulum make what contribution to protein synthesis? The nucleus contains DNA.The ribosome’s is where protein synthesis occurs. The endoplasmic reticulum is where proteins are synthesized.

8. The endoplasmic reticulum and the Golgi apparatus make what contribution to the processing of proteins? The endoplasmic reticulum is where proteins are synthesized. In the Golgi apparatus proteins are received by the ER and modified.

9. What is the function of smooth endoplasmic reticulum and lysosomes? Lysosomes help fight disease causing cells.

10. What is the function of the mitochondria? The mitochondria converts the glucose products into chemical energy of ATP molecules.