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- od 1 Meet- zpn-oxtp-bxu Unit 2 test - cells, organelles, mer X G In order to deteminie how cells rx A testing.illuminateed.com/assessment/5f765e7b4c2b2eb5078b7842/5f765e7b4c2b2eb5078b7843/1?rldbqn=1 ail YouTube Maps O News (1) Facebook Launch Meeting - Z... TikTok sues U.S. go... i! Spanish Present Pro... embrane, transport fall 2020 D. Water moves into and out of the cell at the same rate since the cell is isotonic to its environment. 7. In carrying out normal activities, cells use oxygen and produce carbon dioxide. The concentration of oxygen is higher in the blood than inside the cell, so oxygen moves into the cell. Similarly, carbon dioxide moves out of the cell into the blood because the concentration of carbon dioxide inside the cell is greater than the concentration outside the cell. How do the small molecules of oxygen and carbon dioxide move through the cell membrane?Lab 2 MicrosCO X Copy of Lab 2 X M Inbox (53,887) x b Answered: 4. 1 x C Search Textbo X + /d/1lq1XGTjeDOK-AZLP5NCDYYPZT3K6_fPLnwx-GvHgLnU/edit# Normal text Arial 12 %00 L 1 2 3. 4. 5. 9. Observing Bacteria in Colonies In fresh or saltwater habitats, cyanobacteria will appear (without a microscope) as very small green lines (as can be seen in this video). Observe the following images of cyanobacteria colonies under 100x and 400x magnification with a light microscope: Anabaena sp. 100x magnification Anabaena sp. 400x magnification As you can see, cyanobacteria grow as two different types of cells: those that are photosynthetic (fixing carbon dioxide to make sugars), and heterocysts (that fix nitrogen to make proteins and nucleic acids). Although these cells are genetically identical, each is able to accomplish this via differences in gene expression, a key concept in biology you will continue exploring this quarter. In the 400x magnification image, you should be able to clearly see two…HonorSociety org č. * SpiasiLa * Maps New Tab Describe your color observations of the Nitrate test. a. after adding Reagents A, B (and/or znic): cements b. Did the organism reduce nitrate? (yes or no) ments c. Is the final product nitrate, nitrite or ammonia/nitrogen gas? sions ing es Question 13 4 pts y Resources ules Based on your observations of the SIM test: ple a. Did sulfur reduction occur (yes/no)? zes b. Did the organism produce the enzyme tryptophanase (yes/no)? abus m c. Is the organism positive or negative for the motility test?
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- Experimental Methyl Orange at 460 nM Codcentratidn Tube Absorbadce 0-175 0.236 O.079 0-156 2. uanown. mixture ne Experiment reading of Poromophenol blue Solustion of 580nm Concentration. Tube losurbance 0.238 e.065 248 3 0-343 2-280 is uknown masture Value given = lomg methyl Orange 1. 2. 34 15 Bromophenr Autilled water 4 Orstuied 4 13 10 (2)d/e/1FAIpQLSfTle9UfP15_VUqFI-ACEQd1XBykXv5Lr4dEMQbLJ1d6fCupw/viewform Students subjected three samples of five different molecules to gel electrophoresis as shown in Figure 1 A B C DE +2 3 Wells 4 8. Which of the following statements best explains the pattern seen on the * gel with regard to the size and charge of molecules A and B? 1 point molecules A and B are positively charged, and molecule A is smaller than molecule B. molecules A and B are positively charged, and molecule A is larger than molecule B. molecules A and B are negatively charged, and molecule A is smaller than molecule B. molecules A and B are negatively charged, and molecule A is larger than molecule B. Sign out1:07 < Вack Untitled 6 Brownian movement of bacteria: O a. Can be observed by the of soft agar technique O b. Can be observed by staining of Staphylococcus aureus Oc. Is common in Escherichia coli or Proteus vulgaris O d. Is common in Staphylococcus aureus O e. Can be observed at the edge of a microscope CLEAR MY CHOICE