This is the lining of the esophagus. What shape (squamous, cuboidal, or columnar) of stratified cells is shown here? What do these cells produce?
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Squamous, cuboidal, and columnar are three types of epithelial cells. Epithelial cells are the cells that make up the epithelium, which is the outermost layer of the body's surface and lines the internal organs.
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- Part I – Introduction to Diffusion and Osmosis1. Define the terms diffusion, passive transport, active transport, and osmosis. In each of your definitions, describe the role of a concentration gradient. 2. Biological membranes are said to be selectively permeable (or semi-permeable). What does this term mean, and how does this affect the way that molecules are able to move through cellular membranes? 3. Which type of molecule is more likely to quickly pass through a cellular membrane via simple diffusion, polar or nonpolar? Why? (You may need to use information from your textbook and class discussions to answer this question.)do diffusion and osmosis have in common? How... Soces de Paraphrase Online - Best Free Paraphrasi These are cells in the parotid gland. What shape (squamous, cuboidal, or columnar) of stratified cell is seen here? What do these cells make? Edit View Insert Format Tools Table. Describe the general structure of all cell membranes. How does this membrane structure determine the selective permeability of what can pass across the membrane. Then describe 3 ways cell membranes will differ from one another. 2. List and describe the three main types of cell attachments. Make sure your answer includes what they help a cell attach to. If you wanted to do immunocytochemistry to specifically stain each type of cell attachment, what is a protein that could be used for each type of cell attachment (in other words, what is a unique protein for each attachment type)? 3. In a typical neuron, there are ligand gated ion channels and there are voltage gated ion channels. During the electrical communication between two neurons, describe the involvement of these two types of ion channels. 4. What are four common features of all signaling pathways involving transmembrane receptors? Then, describe the pathway of one of the specific signaling pathways we discussed in class…
- i. Why are carbon, nitrogen, oxygen, and hydrogen the most abundant elements in living matter and, therefore, considered macronutrients? ii. Explain the Fluid Mosaic membrane model of plasma membrane structure. iii. What is the difference between simple diffusion, facilitated diffusion, and active transport? :=8. Define homeostasis. maintoining nterral balance 9. What role does the cell membrane play in maintaining homeostasis? 10. How is facilitated diffusion different from diffusion? How are they similar? 11. List two ways that active transport is different than passive transport. 1) 2) 12. Why is the sodium-potassium pump considered an active transport? Which direction are the sodium and potassium bing pumped? How many sodiums are being pumped? How many potassiums are being pumped?Give the Similarities and Differences between the following terms. Make sure to give at least Two Differences: Terms Similarity Difference Endocytosis/Exocytosis Difference Terms Similarity Diffusion/Osmosis Difference Similarity Terms Pinocytosis/Phagocytosis
- view View Help O Editing AaBbCc AaBbCc No Spacing AaBbCc AaBbe Normal Heading 1 Heading Paragraph Styles 34) The RNA that has an anticodon and attaches to a specific amino acid is RNA. 35) T/F Buffers cause abrupt and large changes the pH of the body by releasing or binding H+ ions. 36) What is a dynamic equilibrium of your internal environment termed? 37) are membrane junctions that distribute tension across a sheet of cells. 38) T/F About 60% to 80% of the volume of most living cells consists of organic compounds. ictions: OnLink each process with the correct definition. RECEPTORMEDIATED ENDOCYTOSIS PHAGOCYTOSIS PINOCYTOSIS EXOCYTOSIS 1. A cell ingests a large particle, such as a bacterial cell. 2. Receptor proteins embedded in the membrane recognize specific surface characteristics of substances. 3. A transport vesicle inside the cell approaches the plasma membrane of the cell, fuses with it, and releases its contents to the outside of the cell. 4. A vesicle containing whatever molecules are in solution outside the cell bulges inward, pinches off, and enters the cell.ing two questions. ollowing graphs: a) A graph that compares the side length (x axis) versus the surface area to volume ratio (y axis). b) A graph that compares the surface area to volume ratio (x axis) versus the diffusion time (y axis). (Do not forget to label the axes, the units on the axes, scale, and the title) 2. Based on your results, would it be more efficient for a multicellular animal to grow by increasing the size of cells or by increasing the number of cells? Explain your answer referencing your results from the lab. Only students in Science 10 need to complete the following question. 3. The concept of surface area to volume ratio can be applied to multicellular organisms. Using your understanding of the surface area to volume ratio, explain why moving from the equator towards the North Pole, bears (Sun bear, Panda bear, Black bear, Grizzly bear, and Polar bear) increase in size. E B
- U-Tube Diagram The following diagram illustrates a U-shaped tube that contains a semi-permeable membrane that separates the left and right sides. In figure A, the left side contains water (blue) and the right side contains a solution (red). After 24 hours, the results are illustrated in figure B. a) b) 1. Does the semi-permeable membrane allow for the movement of solution? What is your evidence? 2. Does the semi-permeable membrane allow for the movement of water? What is your evidence? 3. Has the left and right side of the tube reached equilibrium? What is your evidence? 4. Explain how the experiment demonstrates osmosis. Include tonicity (hyper, hypo, or iso) in your explanation.itences or clauses with complete thought. ng table. Make sure that your Table 23: Effect of Osmosis on Red Blood Cells Concentration of Concentration of Internal Environment Solute Outside the Cell Water Inside the Inside the Outside Effect on the Cell Cell Cell the Cell Hypertonic Hypotonic I sotonic Facilitated Diffusion OUa to be aided by transport proteins whenever they cross the cell membran of protein-assisted passive transport is calle nhonnels th Since ions and polar molecules cannot diffuse freely through the phospholipid bilayer, hy dreJubutunce, TUr example, how the When molecules move from areas of high concentration to areas of low concentration Label the diagrams of cells using the following terms: diffusion, active transport, osmosis, facilitated diffusion, or equilibrium. The arrows show the direction of transport. You may use the terms more than once! High CO2 levels 8 H20 molecules 25 glucose molecules 2 H20 molecules Low CO2 levels 5 glucose molecules 2 H20 molecules High protein levels 10 H20 molecules 10 H2O molecules Low protein levels 8 H20 molecules Osmosis Practice Activity he diffusion of water from an area of high concentration to an area of low concentration. ences below helow show the concentration of water and salt inside