Check your answers: 1. 10 μm 1 cell = about 10 μm 2. 10 μm 2 cells = 10 μm So 10=2=5 1 cell = 5 μm 3. MA 15 μm 7 cells = 15 µm So 15 7 = 2.1 1 cell = 2.1 μm
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- Imagine you have been given a liquid culture of yeast with a starting concentration of 3.67 x 10' cells/ml and are asked to carry out the sample dilution process shown in the figure below. 100μl 100μl 100μl 100μl 100μl 0.9ml 0.9ml 0.9ml H2O H₂O 6.9ml 0.9ml H₂O H₂O H₂O Original 10-1 102 10-3 104 Culture 105 100μl 100μl 100μl Plate A Plate B Plate C a. How many colonies should have been present on Plate A in this example? - Answers must be whole numbers as partial colonies are not expected. b. Imagine you carried out the same dilution scheme shown in the figure above, but now, you do not know the concentration of the original culture. If you counted 163 colonies on Plate B, what is the concentration of cells/ml in the original culture?Good day, could you please help me answer the following. This is just 1 problem, the questions are connected. Thank you so much! a) A commercial stage micrometer has a total length of 1000 μm and is divide into 100 equal divisions. What is the length of each stage division in millimeters? b) Fourteen (14) ocular divisions coincide with three stage divisions. Assuming that the graduations of the stage micrometer are spaced 10 μm, what is the known distance between the three stage divisions in millimeters? c) With the same given information on b), what would be the distance of one ocular division?This is the growth curve for Clostirdium (incubated under optimal growth conditions). Use it to answer the following questions. 3 Cell concentration (million cells/ml) 2.5 2 0.2 1.5 1 0.5 0 2 The growth rate is lag log 0.25 4 0.32 0.5 units 6 million of cells per ml (Image description.: Horizontal axis is time in hours, Vertical is cell concentration in millions of cells per ml. Curve starts at 0,0, increases by 4 hours to 0.5 million cells/ml, goes up steeply over two hours from 0.5 million/ml at 4 hours to 2.5 million cells/ml at 8 hours, 8-12 hour shows an increase of 0.3 to 2,8 million cellls/ml and last 2 hours is flat at 2.8million cells/ml.) From 12 hr to 14 hr is called phase. lunar 2 8 Time (hours) 10 5 stationary 12 cells 14 death 16 million of cells per ml per hour hours million of cells
- Help Answering Why is it important for all plankton monitors to use the sample protocol for both sample collection and identification? What are the ways you can control the amount of light passing through your specimen? What is resolution and how is it improved? With which objective is it permissible to use the course adjustment knob? Many of the plankton images were taken using the 40x objective on a compound microscope. What is the total magnification?M. luteus ~0.8 micron Arrangement in tetrad (arrows) and irregular cluster 10 umS. epidermidis ~1 micron • Note: just focus on the round shape bacteria only (The pink color should be ignored for this lab)
- Biology QuestionCell Homeostasis Virtual Lab Place beaker "A" on the lab table and fill it with 1000 mL water from the graduated cylinder. RED! APODA А B C 0.00. E Please click here or on the image above to go to and start the the online lab exercise titled, "Cell Homeostasis Virtual Lab"If you added 5 mL of a 20X tocopherol to 5 mL of cell culture at a density of 2.4 x 107 cells/mL, what would the final concentration of tocepherol and cell density be?
- You counted 4, 6, 12, 3 cells in each of the 4.outed squares of a hemacytomeyer. What are the cells per milliliter in that culture? If you resuspended your cell pellet 2.5 mL, what is the total cell count? How many uL do you need to add to a new culture if you want 4250 cells?How would I figure out how many dilutions to make given cell density ? And volume to plate ? For example, I want to plate 0.1 ml and want 200 colonies how many dilutions would i need to make, given 7.5 x10^5 cells/ ml12 12 Choose the letter of correct answer and write it on the paper! How can we destroy the harmful Aspergillus sp. (fungi) cell (isosomotic concentration in cell: 0,8 M NaCl) in the most easily way that can be seen on the picture? A)Cell is put into 0,2 M NaCl solution B)Cell is put into 0,4 M NaCl solution C)Cell is put into 0,9 M NACI solution 2021.10.01. D)Cell is put into 1,6 M NaCl solution 91.5% A Rodlet Layer • RodA, RodB Dispersal Plasma Membrane Lactoferrin Iron Zinc Nitrogen Host Proteins Introduction to Cell Biology TBBE5000 EN 2. lesson. 2020/2021 1st semester Secreted Proteases GPI-anchored proteins Catalase, SOD Slalic Acid Residues Siderophores, Zn Transport Nitrogen Uptake Call Wall Mycotoxins Cell wall •a-glucan B-glucan Chitin • Galactomannan Melanin ROI Pentraxin-3 DC-SIGN Fibronectin