Exercise 1 Construction OF CELL Membrane Capuno PDF

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Name: Lionel Jane T. Capuno Section: Animal Biology Block A (B2A12/B2A56)

Date: 11/15/2020 Score:

EXERCISE 1: Construction of Cell Membrane Instruction: Click this link for you to be able to study the structure of the cell membrane and construct it using the correct molecules (https://www.wisconline.com/learn/natural-science/lifescience/ap1101/construction-of-thecell-membrane). Once done, answer the following questions: a. Identify the following structures of a cell membrane

Pore Protein

Phospholipid s

Fibrous Protein

Glycoprotein

Channel protein

2. Refer to Question# 1, what structure forms the basic frame of the cell membrane? The structure that forms the basic frame of the cell membrane is the phospholipid bilayer. This bilayer composts of two components which are the lipids (forming the matrix of the membrane) and the proteins (the ones that are embedded in the membrane or attached to the surface of the membrane. In conclusion the answer would be phospholipids. 3. What is the function of the glycoprotein molecule in the cell membrane? Glycoproteins identify the cell. This means that it’s role is cell-to-cell recognition. 4. What molecules are found in animal cell membranes, but not in plant cell membranes? Cholesterol molecules are found in animal cell membranes, they are embedded in them. However, they are not present in plant cell membranes. 5. Which intermolecular process primarily drives the formation of a bilayer when phospholipids are added to water? Tick the appropriate box for your answer. [√ ] Lipids cause water to arrange in an ordered, unfavorable cage-like structure. Forcing lipids into a bilayer reduces this effect

[ ] Phospholipids self-assemble into a bilayer due to the strong affinity they have for each other. [ ] The ordered arrangement of a bilayer is more favorable than the disordered state of individual free-floating phospholipids. [ ] A bilayer arrangement maximizes the strength of Van der Waals forces among phospholipids....