Structure and Function of the Cell Cornell Notes – Reading Section 4.3 (p.77-78) What is the function of the cell membrane (plasma membrane)? What does it mean to be semipermeable? (not in book) What is a phospholipid? What part of a phospholipid is polar and which is nonpolar? Hydrophillic, hydrophobic? (DRAW) Describe the orientation of phospholipids in the cell membrane. (think bilayer) What other types of lipids are found in the cell membrane? What is their function? Use Figure 4-11 page 78 to help you label the parts of the cell membrane to the right. What is a peripheral protein? What is an integral protein? Name:_____________________ Student # _____ Parts of the Eukaryotic Cell What is the purpose of carbohydrates sticking to the integral proteins located on the outside of the cell? What are several functions of the proteins located in the cell membrane? Why do scientists use the term fluid mosaic model when describing the cell membrane? Lipids page 59-60 What is a lipid? What is the ratio of carbon, hydrogen and oxygen atoms in a lipid molecule? What does this ratio mean for the molecule? What are the 4 main types of lipids and their functions? What is the difference between saturated and unsaturated fats? Back to section 4.3 Using the attached diagram – list the function of each of the organelles. (letters correspond to image on diagram) What are the components of the nucleus? List each function. (F, G & H) What is the function of the mitochondria? (C) What types of cells would you expect more mitochondria? (Hint: which cells need the most energy) What are the parts of the mitochondria? Label diagram to the right. Why do scientists feel that mitochondria developed from prokaryotes? What is a ribosome? (B) Where are they located? What is an endoplasmic reticulum? Golgi body What is the difference between rough and smooth endoplasmic reticulum? Rough (A), Smooth (I) What does the golgi apparatus/body look like? What is its function? (E) Vesicles What is a vesicle? (T) What is the difference between a lysosome and a peroxisomes? What is the cytoskeleton? (U) What is the cytoskeleton composed of? What is the structural difference between microfilaments and microtubules? What is the functional difference them? What is the difference between cilia and flagella? Cilia(V) Flagella(W) What is the purpose of centrioles? (D) Section 4.4 (p. 87-90) What are the three main structural differences between plant and animal cells? What is the function of the cell wall? Where is the cell wall located? What is the cell wall composed of? What is a vacuole? Give several examples of how vacuoles are used in plant cells. What is a plastid? What is the difference between a chloroplast and a chromoplast? Unique Features of Plant Cells