O FileC:/Users/mxham/Downloads/OCR_ExamB...A student used cubes of agar jelly containing universal indicator, which changes colour at different pH.• Five different sizes of cubes were cut from a larger block using a scalpel.• Cubes were placed in a beaker containing hydrochloric acid (enough to cover the cubes) and a stopwatchwas started.• After 2 minutes the cubes were removed, rinsed with distilled water and blotted dry.• Acid absorbed at the outside continued diffusing towards the centre of the blocks.• The time taken for the blocks to turn entirely red was recorded.The results are shown in Table 22.1 on the insert.Length ofone side ofSurfaceTime taken to turn red (min)area toCubeagar cube(mm)volumeTest 1Test 2Test 3Meanratio1.206.42.95.44.9B100.6014.815.514.615.0200.3030.628.327.428.8300.2044.142.243.043.1E400.1558.760.157.458.7Table 22.1Whal was llie role ul the universal indicalur m this experiment?------------------- A student used cubes of agar jelly containing universal indicator, which changes colour at different pH.• Five different sizes of cubes were cut from a larger block using a scalpel.• Cubes were placed in a beaker containing hydrochloric acid (enough to cover the cubes) and a stopwatchwas started,• After 2 minutes the cubes were removed, rinsed with distilled water and blotted dry.• Acid absorbed at the outside continued diffusing towards the centre of the blocks.• The time taken for the blocks to turn entirely red was recorded.The results are shown in Table 22.1 on the insertLength ofone side ofSurfaceTime taken to turn red (min)Cubearea toagar cube(mm)volumeTest 1Test 2Test 3Meanratio1.206.42.95.44.9B100.6014.815.514.615.0200.3030.628.327.428.8D300.2044.142.243.043.1400.1558.760.157.458.7Tablo 111

All living things are made up of cells, which are the most basic and important unit. All of life's…

A student used cubes of agar jelly containing universal indicator, which changes colour at different pH. Five different sizes of cubes were cut from a larger block using a scalpel. • Cubes were placed in a beaker containing hydrochloric acid (enough to cover the cubes) and a stopwatch was started, • After 2 minutes the cubes were removed, rinsed with distilled water and blotted dry. • Acid absorbed at the outside continued diffusing towards the centre of the blocks. • The time taken for the blocks to turn entirely red was recorded. The results are shown in Table 22.1 on the insert. Length of one side of Surface Time taken to turn red (min) Cube area to agar cube volume Test 1 Test 2 Test 3 Mean (mm) ratio 1.20 6.4 2.9 5.4 4.9 10 0.60 14.8 15.5 14.6 15.0 20 0.30 30.6 28.3 27.4 28.8 D 30 0.20 44.1 42.2 43.0 43.1 40 0.15 58.7 60.1 57.4 58.7 Table 22.1 Whhal was Iie role ul the universal iridicalur in this expetiment?

A student used cubes of agar jelly containing universal indicator, which changes colour at different pH. Five different sizes of cubes were cut from a larger block using a scalpel. • Cubes were placed in a beaker containing hydrochloric acid (enough to cover the cubes) and a stopwatch was started, • After 2 minutes the cubes were removed, rinsed with distilled water and blotted dry. • Acid absorbed at the outside continued diffusing towards the centre of the blocks. • The time taken for the blocks to turn entirely red was recorded. The results are shown in Table 22.1 on the insert. Length of one side of Surface Time taken to turn red (min) Cube area to agar cube volume Test 1 Test 2 Test 3 Mean (mm) ratio 1.20 6.4 2.9 5.4 4.9 10 0.60 14.8 15.5 14.6 15.0 20 0.30 30.6 28.3 27.4 28.8 D 30 0.20 44.1 42.2 43.0 43.1 40 0.15 58.7 60.1 57.4 58.7 Table 22.1 Whhal was Iie role ul the universal iridicalur in this expetiment?

Microbiology for Surgical Technologists (MindTap Course List)

2nd Edition

ISBN:9781111306663

Author:Margaret Rodriguez, Paul Price

Publisher:Margaret Rodriguez, Paul Price

Chapter3: The Microbiology Laboratory

Section: Chapter Questions

Problem 2TBP

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