BIOL 2070H Lab 2

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Hello,   In the provided picture I am to select the FIVE compunds that would be the most stable in a CELL MEMBRANE. I had selected A,B,C,D,and E and recieved 1.2 out of 2.  Can you please help!!! Thank you so Much

Name Zona A Fill in the following statement: Diffusion is the movement of molecules from incentration to concentration Osmosis is the diffusion of water BEAKER C P - . The call BEAKER #2 P ♥ ● Op 20% 148 C 20% sal 0 .. 10% KA 0 10 6 C Date Geplemor 28.23 CELL ENVIRONMENTS E * . # The solution inside the beaker is: The solution inside the cell is % water % salt How will the water move? Into the cell or out of the cell? This is ain) How will the movement of water affect the cell? YRAMBU % salt % water The solution inside the beaker is: % water % salt The solution inside the cell is: % balt solution. How will the water move? Into the cel or out of the call How will the movement of water affect the cell

Osmosis Practice Activity Osmosis is the diffusion of water from an area of high concentration to an area of low concentration. Only water moves in osmosis! The diagrams below show the concentration of water and salt inside the cell and the concentration of water and salt surrounding the cell. Complete the sentences below by comparing the concentration of the water inside the cell and the concentration outside the cell. 1. a. Water will flow the cell, out of the cell, in both directions). (into 5% NaCl 95% H20 95% NaCI 5% H20 b. The cell will (shrink, burst, stay the same). a. Water will flow (into the cell. 2. 5% NaCl out of the cell, in both directions). 5% NaCl 95% H20 95% H20 b. The cell will (shrink, burst, stay the same).

e 0 10% sall 0 10% sall The cell SUMMARY Water molecules The solution inside the besker is: N salt The solution inside the cell is: water 16 water How will the water move? Into the cell or out of the cell How will the movement of water affect the cell? This is ain). 2013 1. How do isotonic solutions affect cell size? 2. How do hypotonic solutions affect cell size? 3. How do hypertonic solutions affect cell size? solution 4. Describe a negative thing that could happen to a cell if its environment was too hypertonic 5. Describe a negative thing that could happen to a cell if its environment was too fivpotenc INCAL

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Scientists let rice blast fungal infection cells attach to and attempt to penetrate six different polymer sheets for different lengths of time and in varying extracellular osmotic pressures (Figure 22.9). As the number of the sheet increases so does its hardness. Which of the following makes the most sense based on the data? 100- 60 40- 20- 192 incubation time (hr) 72 96 240 100- 80- 60- 40- 20- b-Oo 8 10 12 extracellular osmotic pressure, MPa Figure 22.9 Penetration as a function of incubation time (A) and extracellular osmotic pressure (B). Numbers 1 to 6 in both panels indicate the substrate, with lower numbers being softer substrates. Percent penetration goes down over time and as substrate hardness increases. If penetration of a substrate occurs at a particular external pressure, this indicates that internal pressure is high enough to allow penetration of the particular substrate. Harder substrates are more easily penetrated when extracellular osmotic pressures are low. The…

erly in alcohol H&E stained sections demonstrate poor contrast between nucleus and cytoplasm. All are preventative or corrective actions EXCEPT a. monitoring water pH due to agricultural run-off b. dehydrating and clearing tissues completely before infiltrating with paraffin c. properly differentiating in alkaline and alcohol solutions d. Allowing eosin to stand in higher concentrations of alcohols

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 Explain how this relationship between the solution in the Elodea cells (from #1) caused what you observed in the Elodea cells placed in saline solution.

i need to choose of the following for each one

b pdf.01# 9 s -> 1 BIO( علوم حياتية عامة لطلبة الكليا Which of the following processes includes all the others? O a. Facilitated diffusion O b. Passive transport Oc Osmosis O d. Diffusion Clear my choice 2 ) 1 1 BIO( علوم حياتية عامة لطلبة الكل

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1) We measured weights before and after soaking a potato in water of different salinities to demonstrate osmosis. There are many other types of membrane transport (as we learned from the Amoeba Sisters!), each with their role in maintaining homeostasis and providing energy, communication, and waste removal for the cell. So why dwell on osmosis? There are some practical bigger- picture things to consider. Choose one of the following scenarios. Describe the scenario. Describe the chain of events terms of tonicity_and movement of water into or out of cells represented by the scenario. Describe the predicted outcomes for the cells/organisms involved. What happens when you dry brine a turkey before cooking? ● • What happens to organisms in soil near salted roads when snow melt and rains occur? Why is sugar considered a good preservative? What is the challenge of heavy rains along the Mississippi River for organisms in the Gulf of Mexico? ● • What happens to fruit when you add sugar? ●

1 In the space below, draw three plants cells: one that is turgid, one that is flaccid, and one that is plasmolyzed. Indicate with arrows the direction of the net movement of water across the cell membrane. Feel free to draw these in a notebook, then uploading a photo below. It’s also ok if you use some program like Paint.  2 Underneath each cell you drew above, label whether the plant that cell represents was placed in a hypertonic, hypotonic, or isotonic solution.  3 Design and describe an experiment using celery stalks to demonstrate how certain conditions will cause a loss or gain of turgor pressure. In order to follow the scientific method, your description should start with an observation and be followed by: a. a testable hypothesis, b. an outline of the experiment that will test the hypothesis, c. a description of the type of data that will be collected, and d. a possible conclusion that could likely be made after completing the experiment and analyzing the data.

TONICITY DRAGTHE WORDS INTO THE BLANK SPACES BELOW TO ACCURATELY COMPLETE THE PARAGRAPH decreases Hypertonic increases key: Hypotonic solute particle • cell membrane cell wall solute in all solutions, the solvent is H20 solvent A В Solution B is to solution A. This is because solution B has a greater concentration of in it than does solution A. Solution C has no solutes dissolved in it, therefore it is to both Solutions A and B. As the relative concentration of solutes in two solutions increases, of necessity the relative concentration of water in the same two solutions Solution A has a lower concentration of than does Solution C; Solution A is also hypertonic to Sol tion C.

9. Using the images of blood from 7.8 in the lab manual, what is the ideal tonicity of sheep's blood? Explain. 10. Using the image in 7.9 of the Elodea cell tissue in the lab manual, why is a hypertonic environment dangerous to plant cells? Explain. 11. Review the following experiment and answer the questions. You set up an experiment where you place a sealed (clamped) dialysis tube cell in a beaker of water. The solution in the dialysis tube cell is 25%NaCl solution and the solution in the beaker is 1%NaCl solution. The solvent for both is water. Before you place the tube in the cell, after it has been filled and clamped, you find the mass of the cell. You also find the mass of the cell after it has been placed in the beaker solution for 30 minutes. The masses are in the table below. Mass in grams of dialysis tube cell Initial Mass 25g Final Mass after 30 minutes 28.7g Using this information, explain the difference in mass before and after submerging the cell in the beaker solution.…

منذ لحظات .4 محادثات من ۷ رسائل جديدة • تيليجرام Studying jügea Mohamad Samir STUDYING le sl تعليم كمقروءة Because of the arrangement of the junctions that bind the cells lining the bladder, urine is restricted to the human bladder. These junctions act as a barrier between the blood and urine, preventing the transfer of ions and solutes. What are the most likely names for these junctions? Gap junctions Tight junctions Desmosomes O communicating junction Clear selection

This review sheet is from the lab video about diffusion and osmosis by bozeman science. I need help because I didnt understand this at all

I. On this table, show in diagram or illustration how cells behave in different conditions Hypotonic Solution 2. Lysing Hypertonic solution 3.Shriveled Type of cell Isotonic Solution 1. Normal cell Animal cell 4. Flaccid 5. Turgid |6. Plasmolyzed Plant cell

Explain the following practices based on what you learned about osmosis. make sure that your explanation are clear and concise

In a monolayer of cultured epithelial cells, the cells may or may not have formed tight junctions. What experimental test could be used to determine it the cells have functional tight junction structures? Place a small dye (1 k Da in molecular weight) into the culture media of cells cultured on a glass coverslip and use live imaging to monitor whether the dye can penetrate into the O cytoplasm of the cells, as would be expected if the cells have functional tight junctions. Inject a cell with a small dye (<1 kDa in molecular weight) and use live cell imaging to track whether the dye moves into neighboring cells, as would be expected if the cells have functional O tight junctions.

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3. (into the a. Water will flow cell, out of the cell, in bath directions). 95% NaCl 5% H2O 5% NaCl 95% H2O b. The cell will (shrink, burst, stay the same). 4. At which solution of concentration gradient is each cell diagram? (Hypotonic, Hypertonic, Isotonic) olo o 0,0 . 0• 0,0 0 o/0 Hypertonie Solution a. b. 5. This diagram is moving from a high to a low concentration: MOVEMENT OF WATER MOLECULES 6. Using a transport protein to move particles across the membrane: 7. Describe the processes occurring in the following pictures: + + + +++ ++ ++ ++ + + +++ LOW + HIGH +

11:28 PM Fri Oct 9 * 29% O T of + : Oct 8, 2020 at 2:10 PM NAME DATE PERIOD Cell Membrane Discovery Big Idea: Cells move materials in and out of their environment through the cell membrane in order to maintain (balance) or (equal state). Composition of the Cell Membrane & Functions: The cell membrane is also called the membrane and is made of a phospholipid The phospholipids have a (water attracting or polar) head and two (water repelling or non-polar) The head of a phospholipid is made of an alcohol and phosphate group, while the tails are 2 chains of fatty acids. Phospholipids can move apart and allow water and other molecules to pass through into or out of the cell. This is known as simple because it does not require and the molecules are moving from areas of concentration to an area of concentration. 1. LABEL a phospholipid bilayer coloring the heads red and the tails blue. 2. LABEL the structure that is hydrophobic and hydrophilic. PHOSPHOLIPID molecule membrane Another type of…

LE Manage Sources Insert Table of Figures Insert Index Insert Table Update Index Update Tal Mark Style: APA Bibliography Insert Caption Update Table Cross-reference Captions Citation F Citations & Bibliography Index Table of Auth Questions 1. A) If the potato cells were hypotonic to the surrounding solution, the surrounding solution itself would be what to the potato cells (hypertonic, hypotonic, or isotonic)? B) Were the potato cells submerged in water with no salt hypertonic, hypotonic, or isotonic to the surrounding environment? C) Were the potato cells submerged in 5 g/100mL salt solution hypertonic, hypotonic, or isotonic to the surrounding environment? D) Look at your graph. At approximately what concentration of salt solution would the potato cells have likely been isotonic with the surrounding solution? [Tip: Estimate approximately at what concentration there would have been no change in the average length of potato strips.] dnote -tnote tes On Search Researcher Research (-)…

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3 ...|III5I I II 6. What factor will most likely increase the rate at which diffusion occurs across a cell's plasma membrane? small concentration gradient across the plasma membrane low temperature high concentration gradient across the plasma membrane large molecule size [ת א dé tv A Aa Pro

UV light has the greatest direct effect on protein structure within a cell, causing crosslinking of proteins. O 1) True 2) False

please choose correct letter and explain a bit 1. The strongest way by which a protein can maintain its shape is by using:a) ionic bonds b) disulfide bonds c) star war forces d) van der Waals forces 2. If a cell (like an amoeba) would be capable of migrating from one place to another only with movement created from the inside of the cell, then we can say that that movement is done mainly by:  a) glycoproteins b) feet c) microtubules d) actin filaments   True or False: In eukaryotic cells (such as human cells), the variety and diversity of proteins is much less than the variety and diversity of lipids.