3. What is one of the cell membrane’s jobs? It controls how substances can move in and out of the cell…
6. Explain the basic organization (main components) of a plasma membrane. Include at least 4 distinct parts in your description.…
1. Why do you think it is important to have a membrane surrounding each of our trillions of cells? Expect varying answers, but the idea is have the students understand the plasma membrane separates the cells from their environment and each other while also regulating the material within each cell. 2. What are two distinctive physical features of phospholipids? Heads are polar (water soluble, hydrophilic) and tails are nonpolar (water hydrophobic).…
If I complete this lab, then I will have a full understanding of the topics covered in the chapter “The Cell” and will have a complete understanding of the makeup of the cell and all of its functions.…
Review the structure of the cell and know the functions of each of the organelles.…
2. Draw a labeled diagram of a small section of the plasma membrane and briefly describe its…
6. Explain the basic organization (main components) of a plasma membrane. Include at least 4 distinct parts in your description. 1. Phospholipids – enhance the philological process 2. Glycoprotein-recognition factors for the membranc 3. Carbohydrates- same as no.2 4. Cholesterol – helps increase fluidity of the membrane…
a. describe the transport process and explain how the organization of cell membranes functions in the movement of specific molecules across membranes, and…
Now you need to know the specific of the plasma membrane, its finer structure and…
3. Describe the properties of peripheral and integral membrane proteins and discuss membrane protein movement within the membrane.…
C. Which intracellular organelles have membranes as part of their structure? How would the breakdown of the membranes of these structures affect the function of Joseph’s heart cells?…
2. The function of the cell membrane is to control nutrients and waste entering and leaving the cell. The cell membrane also provides an outer barrier.…
Study guide for exam 2. Chapter 7 ‐ Membrane Structure and Function Define fluid mosaic model semi‐permeability amphipathic molecules What is the effect of unsaturated fatty acids on membrane structure and properties? What is the effect of cholesterol on membrane structure and properties? Membrane Proteins and Their Functions peripheral Integral proteins Classification based on function (transport, enzymatic activity, cell‐cell interactions, etc.) How do proteins get to cell surface? The role of ribosomes, ER, Golgi Semipermeability Which molecules pass through membrane easily (polar vs. non‐polar, hydrophobic vs. hydrophilic, etc.) The role of ion channels, transport proteins, etc. Diffusion – what is it? How does it work? Does it require energy? Is it a type of active or passive transport? What is concentration gradient? What is facilitated diffusion? Osmosis – what is it? How does it differ from diffusion? Tonicity – hypotonic, isotonic, hypertonic – what does it mean? Active transport – does it require energy? Movement of substances down or against their concentration gradient? How does sodium‐potassium pump work? What is electrochemical gradient? Cotransport – what is it? Bulk transport – exocytosis vs. endocytosis (pinocytosis, phagocytosis, receptor‐ mediated endocytosis) Chapter 8 ‐ Introduction to Metabolism Define What is metabolism? What is metabolic pathway? Substrate? Product? Enzyme? Catalyst? Active site? Cofactor? Coenzyme? Catabolic vs. anabolic; exorgenic vs. endorgenic reactions? Types of energy (kinetic, heat, chemical, potential ) Thermodynamics, open vs. closed system The first and second law of thermodynamics What is free energy? What is energy coupling? What is activation energy? How do enzymes catalyze reactions (by lowering activation energy)…
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Membranes allow cells to create and maintain internal environments that differ from external environments. The structure of cell membranes results in selective permeability…