Follow up Questions:1. How does the cornstarch change as you add water?2. What happens when you press down quickly on the cornstarch?3. What happens when you press down slowly on the cornstarch?4. What happens when you squeeze the mixture in your hand and then releaseyour grip?5. Describe the properties of the cornstarch mixture. Would you call it a solid orliquid? Explain.6. How is the cornstarch – and – water mixture similar to the Earth's mantle?7. How is it different from the Earth's mantle?8. Why is the Asthenosphere said to have plasticity?9. What causes the plasticity in the Asthenosphere?10. As a result of the Asthenosphere's plasticity, how might this property affect thesolid crust upper mantle (lithosphere) of the Earth?

Corn starch is also known as maize starch or corn flour. It is the starch derived from corn grain…

Answered: Follow up Questions: 1. How does the…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Guide Questions: 1. Which the samples tested, has: a. peptide bonds? ___________________________ b. free amino group? ___________________________ c. phenyl-containing amino acids? ___________________________ d. tryptophan? ___________________________ e. cysteine? ___________________________ f. carbohydrates? ______________ CHOICES: a. Biuret Test b. Ninhydrin Test c. Xanthoproteic Test d. Adamkiewicz Reaction e. Reduced Sulfur Test f. Molisch’s Test
Consider the following from the Ampicillin for Injection, USP package insert: For Intramuscular Use: Label Claim 250mg 500mg 1g 2g Amount of Diluent (mL) Approx. Volume (ml) 0.9 1.7 3.4 6.8 1 2 4 8 a) What is the amount of diluent needed to reconstitute a 1 g vial? b) What is the powder volume for a 1 g vial of ampicillin? Approx. Concentration (mg/mL) 250 250 250 250 Later in the package insert you see: For Direct Intravenous Use: Add 5 mL Sterile Water for Injection or Bacteriostatic Water for Injection to the 250 and 500 mg vials and administer slowly over a 3 to 5-minute period. Ampicillin for Injection, 1 g or 2 g, may also be given by direct intravenous administration. Dissolve in 7.4 or 14.8 mL Sterile Water for Injection or Bacteriostatic Water for Injection, respectively, and administer slowly over at least 10 to 15 minutes. c) What is the amount of diluent needed to reconstitute a 1 g vial of ampicillin for direct IV injection d) What is the total amount of volume that will…
9.
Lab Report: Experiment 2 Testing for Starch 1. Formulate a hypothesis regarding the presence of starch in different samples being tested. 2. Based on your hypothesis, make predictions on the outcome of the iodine reaction for each solution. 3. Report the data for the solutions tested in the Table 2.3. Indicate in the table which unknown solution was used. Table 2.3. The iodine test data for solutions. Starch Present? Final Color lodine Solution (yes or no) 1-2 drops 0.5 mL glucose 1-2 drops 0.5 mL starch 1-2 drops 0.5 mL albumin 1-2 drops 0.5 mL distilled water 1-2 drops 0.5 mL unknown 4. Did the unknown solution contain reducing starch? Laboratory 2 Macromolecules
Direction: Read and analyze the following laboratory experiment and answer the following question. PART 2: CARROT POTATO LAB Materials: 6 potato chunks, 6 carrots, 6 sucrose solutions (0m, 0.2m, 0.4m, 0.6m, 0.8m & 1.0 m), plastic cups, and paper towels Methodology: 1. Safety: Wear goggles while completing this lab. 2. Slice a carrot and potato into discs that are approximately 5 cm thick. 3. Use a cork borer to cut the carrots and potatoes. Do not include any skin on the cylinders. You need four apple and potato cylinders for each solution. 4. Keep a carrot and potato cylinders in a covered container until it is your turn to use the balance. 5. Determine the mass of the four cylinders together and record the mass. Put the four cylinders into the plastic cup container. 6. Label the containers with the color of the solution and your initials. 7. Pour the colored solution into the containers and cover with plastic lid. 8. Let stand overnight. 9. Remove the cores from the beakers, blot…
f. What is the temperature inside the laboratory refrigerator? 8- What is the temperature inside the laboratory freezer? h. Your choice: i. Your choice: Your choice: 3 Return the materials to the designated location. Thoroughly clean your glassware, and clean and disinfect your laboratory station. Check Your Understanding- 3.1 Describe the difference between estimating the volume of a fluid in a graduated cylinder made of glass compared with one made of plastic. 3.2 Why is taring a balance important? 3.3 Liquid nitrogen is nitrogen cold enough to exist in the liquid form. It has a boiling point of -320.4°F. Convert this value to degrees Celsius.
Given the following situation, choose the best course of action: measuring 100 µg of lyophilized albumin protein use micro balance O use top loading balance use analytical balance use triple beam balance
Direction: Read and analyze the following laboratory experiment and answer the following question. PART 3: PLASMOLYSIS Materials: safety goggles, red onion, dropper, slides & cover slips, tweezers/ forceps, compound microscope, iodine, small knife, water, salt (5% and 10% solution) Methodology: 1. With goggles on, carefully cut the onion into wedge shaped pieces using a knife. 2. Use an eye dropper to place a drop of water in the center of a microscope slide. Use the tweezers to peel a thin layer of skin tissue from the thick part of the onion wedge and place it in the center of the microscope slide. 3. 4. 5. Add a drop of water and a drop of iodine over the onion tissue on the slide. Carefully lower a cover glass slip at an angle on the stained tissue to allow air bubbles to escape. 6. Examine the prepared slide under the compound microscope at 100X magnification. 7. Record what the cells look like. 8. Prepare a 5% salt solution by adding 5 grams of salt (measure with balance) per 100…
Observe the following Plate counts and then determine the correct number of CFU/ml Plate 1 = 564 colonies at 10^-5 dilution Plate 2 = 422 colonies at 10^-6 dilution Plate 3 = 317 colonies at 10^-7 dilution Plate 4 = 93 colonies at 10^-8 dilution 93 x 10^10 CFU/ml 9.3 x 10^-9 CFU/ml 93 x 10^9 CFU/ml 93x 10^8 CFÜ/ml 93x 10^-8 CFU/ml asap please
Name Date: Instructions: Create a line graph for all tables provided on the blank graphs provided. Mark an appropriate scale before plotting your data. Identify the dependent and independent variables. 1. Data Table Length of Root Tips in Solution With Aluminum Time Length of Root Tips in Solution Without Aluminum lons (mm) 2.0 2.2 2.4 2.8 2.9 3.2 3.7 3.9 (hr) lons (mm) 2.0 2.1 2.2 2.4 1 3 4 2.6 2.7 6 2.8 2.8 Growth of Wheat Root Tips O= Root tips in solution with aluminum ions A= Root tips in solution without aluminum ions Time (hr) The dependent variable is The independent variable is Length of Root Tips (mm)
The high viscosity chracteristic of normal synovial fluid samples is caused by: 1) Hyaluronic acid 2) Hyaluronidase 3) Elevated white blood cell counts 4) The presence of crystals
Procedure: 1. Prepare 6 test tubes and place 1 ml saliva in each. 2. Add Iml water to tube 1,2 ml to tube 2, 4 ml to tube 3,6 ml to tube 4, 8 ml to tube 5 and 10 ml to tube 6. Mix thoroughly. 3. Transfer 1 ml of each into 6 separate test tubes (discard excess solution) and add 1 ml of 1% starch paste. Mix well and heat in a water bath with temperature maintained at 40°C for 30 minutes. 4. Divide each of the contents of each tube into 2 and test with: a. Iodine Test – to half of the content of each tube, add 1 drop of iodine in KI and note the color produced. Compare the intensity of color in each of the 6 tubes. b. Benedict's – to 1 ml benedict's reagent, add 5 drops of the other half of each tube and heat in a boiling water bath for 3 minutes. Note color of precipitate. 5. Rank each tube according to decreasing reaction rate one (1) being the fastest to hydrolyze and 6 being the slowest.

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