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Active transport,osmosis, endocytosis, exocytosis,facilitated,diffusion

The Paramecium, is large enough to allow the insertion of a microelectrode, thus permitting the measurement of the electrical potential between the inside of the cell and the surrounding medium (the membrane potential). The measured membrane potential is -35mV in a living cell. What would happen if you added valinomycin to the surrounding medium which contains sodium and potassium ions? Valinomycin will ( Select ) which will result in the membrane potential [ Select ]

t be submitted on one attempt auto-submit when time expires bondus password is 515b73158335f6 Question 6 Which ion is actively transported through the cell membrane and why? O Na, because the ion is being moved against its gradient O Mg, because the membrane is impermeable to this ion OK, because the ion is being moved with its gradient O Cl, because the ion is moved to equilibrium < Previous

cell defense worksheet (1) [Compatibility Mode] Qv Search in Docume Insert Draw Design Layout References Mailings Review View Acrobat A. Century Gothic - 12 A A- U - abe X,2 x² A A Styles Styles Pane Create and Adobe PI Step 13: Take the "Energy and Transport Challenge!" How many ATP did you use? What type(s) of protein(s) were used? Explain when each type was used. Step 14: Take the "Osmosis Challenge!" What is Osmosis? What is the name of the special proieins that let water pass through? Is this passive or active transport? Step 15: From your Scores Sheet record: Lab Score (% correct): Number Correct: Numbar Incen et Page 2 of 3 * English (United States) 505 words E Focus MAR 15 MacBook Air 888 F1 F2 F3 F4 F5 F6 F7 F @ %23 $ & 7 8. Q W T Y

question: Increasing the rate of breathing is a more effective strategy to increase alveolar ventilation than increasing depth of breathing.   answer should clearly state whether or not the statement is correct and then concisely explain why. the answer should be like a few sentences and address all of the points in the statement.   Here is an example: Both transmembrane carrier proteins and transmembrane channel proteins can mediate active transport of a hydrophilic solute through a cell plasma membrane. This statement is incorrect. Movement of a solute through a channel protein is always passive, whereas carrier-mediated transmembrane transport can be either passive or active. A transmembrane channel protein creates a pore through the membrane allowing for simple diffusion of a hydrophilic solute down a concentration gradient through the membrane. In contrast, transmembrane carrier protein interacts with and 'escorts' a hydrophilic solute through the membrane and is capable of…

decor isLhetims.seattleschools.org/common-assessment-delivery/start/5398502362?action3Donresume&submissionld%=657119921 Concentration, Osmosis, and Cell Environments HW Quiz For each of the drawings, label what kind of environment it is in, how you know this, and what is happening to the cell. This cell is in a isotonic v solution. I know this because This cell will More water is coming in than going out More water is going out than coming in The same amount of water is going out and coming in

From the image provided. Do you think that a membrane potential exists for this synthetic plasma membrane? If your answer is “yes,” please indicate whether it is negative or positive at the region closer to the inner leaflet of the plasma membrane. Explain your reasoning.

Diffusion and Osmosis What is your prediction about the effect of molecular weight on rate of diffusion? What is your prediction about the effect of temperature on rate of diffusion?

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Qualitative thinking: For diffusion, we need to keep straight the difference between diffusion rate and diffusive flux. a. How do diffusive flux and diffusion rate differ? How do their units differ? b. Give an equation that relates the two. c. Based on Fick's equation for diffusive flux, what are some conditions that would increase flux and rate?

I need help with the diagrams for aHypertonic, Isotonic, Hypotonic, Solute

NOT just copy the name of the lab. Introduction (6 10 sentences) Provide some background information by explaining the concept of osmosis and associa terms such as isotonic, hypotonic, and hypertonic. Describe the exact purpose for completing the lab – what are you trying to accomplish by doing the experiment? t Modified: 01/2021 sio 150- Laboratory Manual Human Anatomy & Physiology I OCCC Membrane Transport Clearly state your hypothesis (hypotheses) and logically explain the line of reasoning that led you to develop your particular hypothesis. You must explain what you expect to happen and why.

Can you help me answer the TEST C (2nd photo) please. Thank you, Tutor!

bio 111 intro to cell, i need help in my post lab assignment. read the question carefully please and if you have any questions

I need help please

Please look over my answers. Thank you.

The plasma membrane protects the integrity of the interior of the cell by allowing certain substances in, while keeping other substances out. Summarize the manner in which small molecules are permitted to pass through the membrane ensuring you explain the difference between passive, facilitated, active, and coupled transport by comparing and contrasting them. Finally, explain the difference between endocytosis and exocytosis and provide an example of a molecule (remembering to state its function) that is transferred using this method.

Two to three drops of mouse blood samples were placed in three different vials containing 0.07 M NaCl,0.15 M NaCl, and 0.30 M NaCl. A drop from each of the three vials were obtained and put on a slide forobservation under HPO. The effects of the different osmotic concentrations on the cells are shown in figures in your worksheets. Label the cell membrane for each figure. Give a short description (size and cell shape) for each of the RBC samples on the space provided in your worksheet. Compare their appearances with RBCs in the blood smear. Use the following guide questions in providing descriptions for each item. Which preparation has cells that look similar as those in the blood smear? What does this indicate about the movement of water in the cells? In which solution do the cells appear differently from the normal RBCs? What part of the cell could have possibly controlled such movement of water? What is its property that allowed this movement?

Quantitative – diffusion time: Consider a spherical, single-celled organism which needs oxygen tosurvive. a. Assume oxygen needs to diffuse from the outside of the cell to its center. Write an equation thatgives the diffusion time in terms of the cell radius. b. The cell has a 4 micron (m) diameter, and diffusion coefficient of oxygen is 1.8 x 10-5 cm2/s inwater (assume diffusion is the same through the cell membrane). How long does it take for oxygento diffuse to the center of the cell? c. Cells typically need key molecules such as oxygen to survive. Diffusion times of oxygen can limithow big cells can become. If the cell gets too large for oxygen to reach its center, the cell coulddie. Calculate the size of a cell at which oxygen diffusion time becomes too slow and so limits theability of the cell to get that big. Explain your assumptions. How does this compare to typical cellsizes?

Diffusion and osmosis classification Classify the following characteristics based on whether they are describing diffusion, osmosis, or both. Diffusion Results in an Can occur with equal distribution of solute molecules or without a membrane Always involves the movement of water Requires a semi-permeable membrane Osmosis Involves the movement of gases, ions, and small water soluble molecules Passive form of movement that requires no energy Moves from areas of high concentration to low Both Diffusion and Osmosis Responsible for gas exchange in the lungs concentration A 3 of 15 Next > Cation to open the document "Epicinstaller-13.0.0-fortnite-a8e4f12cada646caa706d8be407be69f (3).msi". tv 22

CELL STRUCTURE AND FUNCTION – EUKARYOTES, PROKARYOTES AND VIRUSES-LABORATORY REPORT SHEET  ACTIVITY 2: CELL MEMBRANES, OSMOSIS AND DIFFUSION         Initial Volume (Vi) (mL) Final Volume (Vf) (mL) Change in Volume (Vi – Vf) (mL) A 20% sucrose 20% sucrose 92.0 mL 94.0 mL -2.0 mL B 40% sucrose 20% sucrose 92.0 mL 92.0 mL 0.0 mL C 20% sucrose 40% sucrose 92.0 mL 90.0 mL 2.0 mL   Treatment Percent Change A -2% B 0% C 2%   Hypothesize which dialysis bags should gain, lose or stay the same in regards to volume. Explain. Which solution is hypotonic, hypertonic and isotonic? Explain what the change in volume of the dialysis tube indicated and describe what happened when the volume increased and when the volume decreased. Explain the relationship between solute concentration and amount of free water or water available for movement.

In facilitated diffusion, what is the role of the transport protein? > View Available Hint(s) O Transport proteins allow solutes to move passively down their concentration gradient across the membrane. O Transport proteins provide the energy for diffusion of the solute. O Transport proteins provide a low-resistance channel for water molecules to cross the membrane. O Transport proteins provide a protein site for ATP hydrolysis, which facilitates the movement of a solute across a membrane. Transport proteins organize the phospholipids to allow the solute to cross the membrane.

Short Question:-2 Course Code: BIO121 Course Name: Principles of Biology I (a) Plasma membrane is said to be selectively permeable. Explain what is meant by that. (b) Describe the differences between a plant cell and animal cell. (c) List the three animal cell junctions and give their functions

Pertains to membrane transport and signaling

For each of the following scenarios described where a molecule or ion is moving from one side of a membrane to the other, select the method by which the molecule or ion is moving. Each answer can be used more than once, or not at all. - Simple Diffusion - Facilitated diffusion by a channel protein - Facilitated diffusion by a carrier/transport protein - Active transport by a pump - Could be facilitated diffusion by a channel or a carrier; not enough information is given   A- While water can freely diffuse across the membrane, it does not do so fast enough for living organisms to function properly. Therefore, membrane proteins known as aquaporins can increase the rate at which water moves across the membrane. The movement of water across the membrane via aquaporins (which do not change shape) is an example of which type of transport? B-Many snake venoms induce paralysis by acting on acetylcholine receptors. Nicotinic acetylcholine receptors are transmembrane proteins that allow Na+, K+…

Uniporters and ion channels support facilitated transport across cellular membranes. Although both are examples of facilitated transport, the rates of ion movement via an ion channel are roughly 104- to 105-fold faster than the rates of molecule movement via a uniporter. What key mechanistic difference results in this large difference in transport rate? What contribution to free energy (ΔG) determines the direction of transport?

From the image. Do you think that a membrane potential exists for this synthetic plasma membrane? If your answer is “yes,” please indicate whether it is negative or positive at the region closer to the inner leaflet of the plasma membrane. Explain your reasoning.

question shown in picture, I don't know the order of this

conline.austincc.edu/ultra/courses/_891351_1/cl/outline 8 Match each of the following with their best description: Question movement of molecule down their concentration gradient using kinetic energy movement of water molecules down their concentration gradient using kinetic energy type of transport that moves large macromolecules or cell structures requiring ATP type of transport required to move large molecules down their concentration gradient All Answer Choices A. diffusion B. facilitated diffusion C. protein mediated active transport D. vesicle transport E. osmosis ra....docx A Biol 1406 - Pra....docx Biol 1406 - LA....docx Selected Match A. diffusion B. facilitated diffusion C. protein mediated active transport D. vesicle transport CollegeScores2y....csv

Concentration, Osmosis, and Cell Environments HW Quiz For each of the drawings, label what kind of environment it is in, how you know this, and what is happening to the cell. This cell is in a v solution. I know this because This cell will

Uniporters and ion channels support facilitated transport across cellular membranes. Although both are examples of facilitated transport, the rates of ion movement via an ion channel are roughly 104 - to 105 -fold faster than the rates of molecule movement via a uniporter. What key mechanisticdifference results in this large difference in transport rate?What contribution to free energy (ΔG) determines the direction of transport?