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- Sponge Bob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that rubbing Dr. Kelp's solution will be a better cure. Sponge Bob decides to test this cure by rubbing Gary with 5 milliliters of seaweed solution on half of his shell and rubbing 5 milliliters of Dr. Kelp's solution on the other half of Gary's shell. What is the control variable? the type of solution O the absence of slimotosis the same amount of solution used on both halves of the shellWhy does whisking egg white produce foam?The last time we ran a gel, we ran a 1% gel. Why would we choose to run a 3% gel today on the worms?
- Below is an image of bacterial cells. 1. What shape of bacterial cells is portrayed? 2. Are there any bacterial arrangements visible? If so, which one(s)?When you are looking through the compound microscope at a slide containing Protozoans under an objective lens 40X, how much is the total magnification? 4X 40X 100X 400X Question 3 It would be necessary to use the oil immersion lens to visualize a Helminth egg that measure 100 µm long? Group of answer choices True False Question 4 To visualize a bacterium, measuring 1 µm, under the compound microscope is necessary to use the 100X objective without oil immersion. True False Question 5 There is a piece on the microscope able to result in a better contrast of a specimen. Which piece is that? Coarse focus Mechanical stage Fine focus Iris diaphragamA=B=C=D= This diagram depicts a Gram what bacteria
- A group of students wanted to learn how the concentration of copper in water affects the survival of tiny aquatic plankton called Daphnia. The students made four different copper solutions: 0% copper, 0.5% copper, 1% copper, and 2% copper. They poured 200mL of each solution into separate beakers and added 10 Daphnia to each beaker. After 5 days, the students counted how many Daphnia were still alive in each beaker. What is the control treatment in this study?Why is the “LIVEWARE” always in the center of the SHELL model? Explain in 2-3 sentences only.In the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions: a) Outer cellular covering which includes: Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm. c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…
- A lab technologist calibrates her microscope and finds that 7 stage divisions are equal to 38 ocular divisions. The entire scale on the stage micrometer is 1 mm long and has 100 equal divisions. The technologist measures a coccus-shaped cell and determines that the cell is 4 ocular divisions in length. What is the length of this cell in µm? Show all calculations.In which phase would you expect to find the most endospores in a bacillus cell culture? pick one options: Lag Phase All 3 Phases Death Phase Log PhaseWhich one of the following statements about the Gram stain is false? A-In the Gram stain, a dye called crystal violet is used to stain the cells purple. B-Gram positive cells end up being stained purple. C-Gram negative cells have thinner peptidoglycan layers than Gram positive bacteria. D-In the Gram stain, alcohol is used to kill the bacteria E-Gram negative cells end up being stained pink or red.