Cell Membrane Lab Report Essays

Cell Membrane Lab Report Essays Cell Membrane Lab Report Paper Cell Membrane Lab Report Paper Time (min) Total Diameter (mm) Distance of Diffusion * (mm) Rate (mm/min) * 15 30 45 Potassium Permanganate 5 Celsius Methyl Blue 5 Celsius Total Diameter (mm) Distance diffused = diameter of each reading minus initial diameter Rate distance in mm/elapsed time (min) Double click the chart below. A spreadsheet will open. Enter the data from the table above into the spreadsheet in the areas provided. When you are finished, click into another area of the lab report. The spreadsheet will close automatically. Do not close the spreadsheet with the X in the upper right corner. What effect did temperature have on the rate of diffusion? How did molecule size affect the rate of diffusion? What happens to the rate of diffusion over time? Why? What can you conclude from this experiment? II. Osmosis Osmosis EXERCISE 2 Osmosis demonstration After 15 minutes, record the volume change in each tube. Seismometer Dialysis Tube Contents Beaker Contents Volume Fluid Moved Direction of Movement 2 Describe the net movement of water in seismometer 1 . Describe the net movement of the water in seismometer 2. How is the movement of water molecules related to the concentration gradient of the water? EXERCISE 3 Effect of solute concentration on rate of osmosis Subtract the beginning mass from the final mass for each of the five bags. Record the difference in the table below. Double click the chart below to open a spreadsheet and enter the results from the table above to complete the graph. When you are finished with your work, click into another area in the lab report to close the spreadsheet (do not use the X in the upper right hand corner). For visual purposes the answer key shows the chart only from 10 grams to 22 grams. Your chart will begin at 0 grams. Answer the questions below based on data displayed in the graph above. Was the direction of net movement of water in bags 1 to 4 into or out of the bags? Which bag gained the most weight? Why? Explain the results from bags 4 and 5. Viewing the data you entered in the table above, summarize the results for each bag. Summary Tonic of Bag/Beaker 3 4 5 Ill. Permeability of Membranes EXERCISE 4 Differential permeability Tube 3 is tested for starch. Tube 4 is tested for chloride ions. Enter the data from the lab exercise into the table below. Contents of Beaker Contents of Bag O min 60 min Starch Chloride Ion Which substances diffused through the dialysis membrane? How does dialysis tubing model the differential permeability of a plasma membrane? What physical property of dialysis tubing allows it to be differentially permeable? IV. Tonic Tonic Hypotonic Isotonic Hypersonic Turgid. Polynomials. Lists Lased Hemolytic Hemolytic Creation A. Tonic in Plant Cells EXERCISE 5 Polynomials in Elodea cells Label which sample is turgid and which is polymerase (Answer 1 in each column). Label the cell wall, central vacuole, plasma membrane, and chloroplasts on each slide. For a more detailed view of the slides below, increase the document size to 150% using the drop-down feature on the toolbar or look under mom in the view options of the menu bar.

How To Say ‘Want’ in Spanish

How To Say ‘Want’ in Spanish The English verb to want can be translated to Spanish in at least five ways, the most common of them being querer. Using Querer When querer is used to mean to want, is can be used almost exactly the same way as the English verb. You should be aware, however, that querer is also a common way of expressing romantic affection, and Te quiero is a common way of saying I love you. Some examples of querer for want:  ¿Quà © quieres hacer? (What do you want to do?)Solo quiero verte. (I only want to see you.)Siempre quise un viaje al Perà º. (I always wanted a trip to Peru.)Quiero tres tacos y un refresco, por favor. (I want three tacos and a soft drink, please.)No queremos dinero; shopping argentina queremos justicia. (We dont want money. We want justice.)Los manifestantes quieren que el gobierno reduzca los impuestos federales. (The demonstrators want the government to reduce federal taxes.)Hace una semana quisimos las frutas, pero ahora no las queremos. (A week ago we wanted the fruits, but now we dont want them.) Querer typically is followed by one of three grammatical constructions: An infinitive, often translated to English as an infinitive (the verb form beginning with to). Infinitives in the first two examples above are hacer and ver (in verte).One or more nouns. The nouns serving as objects of querer are viaje in the third sentence, tacos and refresco in the fourth, and dinero and justicia in the fifth. Alternatively, a pronoun can be placed before the verb, as in the second half of the final example.The relative pronoun que followed by a clause that uses a verb in the subjunctive mood. Reduzca is in the subjunctive mood in the fifth example. Using Desear for 'Want' Because querer is conjugated irregularly, beginning Spanish students instead often use desear, which is used in the same way as querer. However, desear is used less often and is more formal; in many situations it can sound overly flowery, which is one reason it seems common on Spanish-language greeting cards. Desear can have romantic or sexual overtones in some contexts (it comes from the same origin as the English verb desire), so you should exercise caution when using it to refer to people. Deseo aprender sobre este curso. (I want to learn about this course.)Desean el regreso de las libertades, la llegada de la democracia. (They want the return of liberty, the arrival of democracy.)Deseo que tengas un buen dà ­a. (I want you to have a great day.) Using Pedir for 'Want' When want refers to asking or requesting, it is often best translated using pedir:  ¿Cunto pide ella por su coche? (How much does she want for her car? Literally, how much is she asking for her car?)Pedimos un empleo de alta calidad. (We want a high-quality employee. Literally, we are asking for a high-quality employee.)Piden 900 pesos por dà ­a por una sombrilla en la playa. (They want 900 pesos per day for an umbrella on the beach. Literally, they are asking for 900 pesos per day for an umbrella on the beach.) Using Buscar for 'Want' If want could be replaced by look for or seek, you can use buscar. Te buscan en la oficina. (Youre wanted at the office. Literally, theyre looking for you at the office.)Muchos estadounidenses buscan casa en Mà ©xico. (Many Americans want a house in Mexico. Literally, many Americans are looking for a house in Mexico.)Todos ellos buscan trabajos que puedan proveerles la oportunidad de aprender. (They all want jobs that offer them the opportunity to learn. Literally, they all are looking for jobs that offer them the opportunity to learn.) Translating an Older Use of 'Want' Although not common in modern English, want is sometimes used to mean need. In such cases, a verb such as necesitar or a negated use of  faltar can be used in translation.  ¿Necesitas dinero? (Are you wanting for money?)El Seà ±or es mi pastor, nada me faltar. (The Lord is my shepherd, I shall not want.) Key Takeaways The most common Spanish verb for to want are querer and desear, which typically are followed by an infinitive, a noun, or que and a verb in the subjunctive mood.When want refers to asking for or requesting something, pedir can be used.When want refers to seeking or looking for something, buscar can be used.