f2023_Prelab-2_Sieve-Analysis

Specimen A is? Specimen B is?

Assume your field of view under a 3X objective is 6mm across. What is the field of view in mm under a 20X objective? Show clear work with units for credit. Field of view 20X objective? ___mm What is the field of view of this 20X objective in micrometers?  If you observe a specimen under the 20X objective and the specimen spans one-quarter of the field of view distance, how long is the specimen in micrometers?

question below is the reference you can also add the procedure but i need the answer most importantly and use the reference if you need it , draw it please for me to understand better

What would this specimen be?

How can I found the log of molecular weight ? Please

Match the samples to the type pf solution they belong.

TRUE or FALSE only! 1. Problem: Calibrating ocular micrometer using the stage micrometer under the low power objective. Given: OD=27 SD=8 Each space on the stage micrometer=0.0001 inch Based on the given values, the ODV is equal to 0.753 2. Problem: Calibrating ocular micrometer using the stage micrometer under the low power objective. Given: OD=27 SD=8 Each space on the stage micrometer=0.0001 inch Based on the given values, the SDV is equal to 3.54 3. Inoculation chambers can be used in transferring bacterial culture while laminar flow cabinet can be used as permanent storage for biological samples.

Metric Prefixes Nano-, Micro-, Centi-, and Milli- Match each prefix with its value. 1 Micro 2 Nano Centi 4 Milli Match each of the options above to the items below. 1 x 10-3 No answer 1 1 x 10-2 2 3 4 1x 10-9 1х 10-6 m

Question:- We are using in class 4.5 mm and 40X. a) How big is a specimen that takes up 1/2 the field view at 90X?

Non-conducting materials can be studied by scanning tunneling microscope(STM). 1.True 2. False

If, when using 10X ocular and a 20X objective, the field size is 2 mm. The approximate field size with a 50X objective is ________ mm. 0.6 0.8 0.4 1

The field of view under the 4x objective is 3.3mm and a specimen looks like they can fit about 10 times across the field of view.  What is the size of the specimen?

5 please provide complete solution and explanation

Answer the following three questions using the chart referenced on the second image. Please type them out instead of writing them, I’m not good at reading hand writing.

The specimen you are examining is very thin and transparent. What can you do to make it easier to see

Question is... a) name? b) shape? c) arrangement?

The chart below represents the results (absorbance readings) of your Bradford Assay. Use the data and graph to determine the dilution of each well and concentration (in mg/ml) of the sample in each well of the microtiter plate.

when testing unpasteurized milk you get a colony count of 118 colonies on plate A and 110 colonies on plate B after you plated .1 mL of a sample your .1 mL sample came from tube #6 you have prepared a serial dilution with six test tubes all tubes are a 1 to 10 dilution calculate the average CFU/ml of the original sample show work

1. The Cocaine test device only provides a preliminary qualitative analytical result. The preferred confirmatory method for quantitating the concentration of Cocaine in the specimen is Gas Chromatography/ mass Spectrometry. After performing the screening test for Cocaine, 3 specimens were interpreted as POSITIVE and 10 specimens were interpreted as NEGATIVE. How many specimens will be sent for Confirmatory testing? Why? 2. This symbol was seen on the box containing the test devices for Cocaine. What does it mean? 3. Another symbol was seen on the box containing the test devices for Cocaine. What does it mean?

Please draw a Manufacturer label in one page, You should use you own imagination to make the labels keeping the Legal Requirements in place

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…

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I need help with the friday section and the graph

Solve for the calibration factor in micrometers of the ocular micrometer using the LPO

2247 22.00 22.00 20.00 18.00 16.00- 14.00 Sample type HINA 40 Sampie D 12.00- 10.00 9 8.00- 6.00- 4.00 2.00 Samplee 20 Abs 224 4-260 10 mm path (23.055 A-280 10 mm path (11.20 200/280 2.00 200/230 1 0.00 -2.55 220 230 240 250 260 270 282 290 300 310 320 330 340 350 nglu s222 Wavelenath nm We have extracted nucleic acids from tissue. A spectrophotometer was used to analyze the samples. What information do we get if we calculate the ratio of the Absorbance value at 260 nm to the Absorbance value at 280 nm? 10 mm Absorbance

A quality control test that involves a media fill procedure should include multiple manipulations using all of the following EXCEPT: Select one: O a. O b. O C. O d. Glass vials Glass beakers Glass ampoules Empty sterile bags Q Search T M BOE 10

nsert Format Arrange View Share Window Help Biology Lab Exam 1 Sp 21 目 125% v Collaborate Insert Table Chart Тext Shape Media Comment View Zoom Add Page 3. (1 point) Show the answer to the following question in correct significant figures. 10.219 + 3.12 = 4. (7 pts) True or False. Circle the correct answer. True or False. A blank used to zero of spectrophotometer always contains just distilled water. True or False. The mode is the most commonly occurring number in a data set. True or False. One milliliter (mL) equals 1,000,000 microliters (µL). True or False. Peroxidase activity increases when the enzyme is boiled True or False. Enzymes are carbohydrates. True or False. Denaturing involves an enzyme breaking down into individual amino acids. True or False. Hydroxlyamine is a competitive inhibitor of peroxidase. 5. (1 point) How many µL (microliters) are in 2.32 L? Show your work for full credit. 6. (1 pts) Convert 1,745 mm tọ Km. Show your work for full credit. MAR étv 9. MacBook Air