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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.)Title: Osmosis on Zucchini and Cucumber Objective: Explain how osmosis happens in plants such as zucchini and cucumber. PLEASE WATCH THE VIDEO LINK HERE BEFORE ANSWERING THE QUESTIONS. Thank you Youtube link: https://youtu.be/9bPto2f_fGA After watching it, please ANSWER THE QUESTIONS! The Questions: -Explain why and how did this happen to each of the slices of cucumber or zucchini. (In each Set) -Kindly explain exactly WHY did this happen. (In each Set) -What type of solution were present in each set up here? (In each Set) -How did osmosis happen on each of the set ups? (In each Set) You might be wondering what does it mean with the "(In each Set)". So the format on how you will answer the questions above is in Three sets: Set 1, Set 2 and Set 3 (you can see it in the video, MANDATORY TO WATCH IT). FORMAT: SET 1: Answer the questions. SET 2: Answer the questions SET 3: Answer the questions Thank you so much:)pQLScB3CBS-8U2yQp5UAPJA-R3spS6YB8srqTGBoSwdXc_EattnA/viewform dvisor Main... My Drive - Google... Your answer What is the difference between primary active transport and secondary active transport? The sodium potassium pump * Job Listing - USF... WT Enrollment Requir... Is a symporter Can be blocked with drugs Controls intracellular chloride and potassium concentrations Is a glycolipid Breaks down ATP in order to generate energy ATP can be broken down to generate energy * True False A copy of your responses will be emailed to lc21-0506@lclark.edu. Submit Chemic Cle
- canvas.fscj.edu at do diffusion and osmosis have in common? How... Paraphrase Online - Best Free Paraphrasing Tool This is the lining of the esophagus. What shape (squamous, cuboidal, or columnar) of stratified cells is shown here? What do these cells produce? TabloU-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.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: On
- Different organelles are abundant in different cell types. Match the cell types with their abundant organelles by placing the correct letter from column B into each blank in column A. Follow the hints provided in parentheses.Column A Column B(1) cell in the adrenal gland that makes steroid hormones (a) mitochondria(2) white blood cell (phagocytic) (b) smooth ER(3) liver cell (detoxifies poisons) (c) peroxisomes(4) muscle cell (highly contractile) (d) microfilaments(5) mucous cell (secretes protein product) (e) rough ER(6) epithelial cell in the outer layer of skin (withstands tension)…. 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…2. Circle the correct bolded blue word. a. A substance that moves across a membrane "down" or "with" their concentration gradient is moving from the side with a higher / lower concentration of that substance to the side with a higher / lower concentration. This does / doesn't require energy input and is called active / passive transport. b. A substance moving "against" or "up" its concentration gradient is moving from the side with a higher / lower concentration of that substance to the side with a higher / lower concentration. This does / doesn't require energy input and is called active / passive transport. c. If the energy from the hydrolysis of ATP is directly used to pump the substance, the transport is called primary /secondary active transport. d. Ion-coupled transport is primary /secondary active transport and has two parts. First, the hydrolysis of ATP is used to power the creation of an ion concentration gradient. The ion is typically Na* or H*. Second, the energy stored in…
- 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?Adherens junctions link together adjacent cells in an epithelial sheet through the lateral associations of numerous cadherin molecules. On their cytosolic surfaces these junctions are tied to the actin networks of the neighboring cells (see the figure), giving them the remarkable ability to sense mechanical stresses and generate biochemical signals that lead to an appropriate response. Each of the following statements accurately describes a property of this process of mechanotransduction EXCEPT: plasma membrane p120-catenin B-catenin a-catenin actin filaments cadherin vinculin CYTOSOL Choose one: ⒸA. Inhibition of myosin leads to a compensating increase in the size of an adherens junction. OB. Adherens junctions respond to mechanical stress by balancing the forces on adjacent cells. ⒸC. Adherens junctions sense tension and change behavior in response to mechanical stresses. OD. Artificially increased contractile stress in a cell increases the size of an adherens junction.Analogs of hemidesmosomes are the focal contact sites, which are also sites where the cell attaches to the extracellular matrix. These junctions are prevalent in fibroblasts but largely absent in epithelial cells. on the other hand, hemidesmosomes are prevalent in epithelial cells but absent in fibroblasts. In focal contact sites, intracellular connections are made to actin filaments, whereas in hemidesmosomes connections are made to intermediate filaments. Why do you suppose these two different cell types attach differently to the extracellular matrix?