Part C You want to test the effect of sucralose on the growth of a plant. Design a study using the steps of the scientific method. Identify the dependent and independent variables in this experiment. BIUX² X₂ 15px EEEEEE Characters used: 0/ 15000 AVA FRY
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- What are terpenes and terpenoids? Briefly discuss their main functions and importance in plants. Discuss the significance of the following tests and what constituent is being detected: Keller-Kiliani test Froth test Liebermann-Burchard test Capillary Tubes test Kedde testBruce Ames and his colleagues have pointed out that although detailed toxicological analysis has been conducted on synthetic chemicals, almost no information is available about the mutagenic or carcinogenic effects of the toxins produced by plants as a natural defense against fungi, insects, and animal predators. Tens of thousands of such compounds have been discovered, and he estimates that in the United States adults eat about 1.5 g of these compounds each daylevels that are approximately 10,000 times higher than those of the synthetic pesticides present in the diet. For example, cabbage contains 49 natural pesticides and metabolites, and only a few of these have been tested for their carcinogenic and mutagenic effects. a. With the introduction of new foods into the U.S. diet over the last 200 years (mangoes, kiwi fruit, tomatoes, and so forth), has there been enough time for humans to develop resistance to the mutagenic effects of the toxins present in those foods? b. The natural pesticides present in plants constitute more than 99% of the toxins we eat. Should diet planning, especially for vegetarians, take into account the doses of toxins present in the diet?In this experiment, answer the following questions: 1. How do you measure the energy produced in this experiment? 2. Will you be able to perform the same results (flask A with germinated seeds temperature increases and flask B with boiled seeds temperature remain unchanged), assuming you will be using a regular glass flask? Why? 3. How come the (boiled seeds) control set up release energy as well? How come even if the boiled seeds here are considered dead they still release energy? 4. Is it possible of getting the reverse of the results. If yes, why?
- A crude extract sample was obtained from a plant and was found effective as an anti-diabetic agent in-vitro. The researcher wants to determine the appropriate lethal dose of the sample because it was intended to be administered orally. Literature studies show that plants under the same genus with the source of the crude extract has a lethal dose of 300 mg/Kg BW. Your group performed the test following the OECD Guideline 423 and used the recommended starting dose. The derived approximate LD50 was 25 mg/Kg BW. 1.With the approximate LD50 of the plant sample tested in the case, determine and interpret the TI of the sample if the ED50 is: A. 40 mg/Kg BW B. 18 mg/Kg BW C. 3 mg/Kg BwA crude extract sample was obtained from a plant and was found effective as an anti-diabetic agent in-vitro. The researcher wants to determine the appropriate lethal dose of the sample because it was intended to be administered orally. Literature studies show that plants under the same genus with the source of the crude extract has a lethal dose of 300 mg/Kg BW. Your group performed the test following the OECD Guideline 423 and used the recommended starting dose. The derived approximate LD50 was 25 mg/Kg BW. Why would a drug with a TI of less than 1 be considered as the primary treatment of a certain disease?Ibuprofen mates are considered one of the major transdermal patches used as a pain killer. If the patch was of square shape with surface area dimensions 2*2 cm and the thickness of the patch was 100 micro meter The release of ibuprofen from this dosage form showed a lag time of 8.5 min calculate the total amount of ibuprofen (mg) released from the mate after 6hours, if the concentration inside the mate was 12.5mg/ml, knowing that the partition coefficient of the drug at 25'C is 10.5 Select one O 112.58 10A-3 g. O 112 58 mg O 107 56 mg
- Yeast cells has been cultured on glucose (Table 1). The growth data follows the Monod Equation Table 1: Growth data for yeast cells Glucose concentration (mg/L) 7 10 15 40 200 1000 Specific growth rate (h*¹) 0.066 0.088 0.12 0.294 0.330 0.364 0.419 0.451 0.2 0.304 0.340 0.458 Observed yield, Y'x/s (g/g) a) Calculate the maximum specific growth rate (max) and the substrate constant (Ks) b) Estimate the true yield Y'x/s and the maintainance coefficient ms c) Calculate the doubling time at a concentration of 15 mg/L glucose d) Calculate the substrate consumption rate (rs) assuming a substrate concentration of 40 mg/L and a biomass concentration of 100 mg/Lhttps://studylib.net/doc/8245959/lab-7--got-milk%3F follow and open the link then answer the question number 4: Bacteria grown solely on lactose will grow, as will bacteria grow only on ONPG. However, cells grown solely on TMG will not grow, and will instead eventually die. Based on the structures provided below, why are cells capable of growing on ONPG and lactose, but not TMG alone?A unique aquatic plant was discovered from a lagoon in El Nido, Palawan. To determine the protein content of the plant, an adequate amount of the plant extract was acquired, and Bradford assay was performed. Determine the total protein concentration, in µg/mL, of the acquired plant extract. A bovine serum albumin (BSA) stock solution with a concentration of 250 µg/mL was used and mixtures with the following compositions and absorbance readings were prepared: Volume of BSA (mL) Volume of water (mL) Absorbance Tube # at 595 nm 1 0.00 2.00 0.000 2 0.20 1.80 0.112 3 0.40 1.60 0.225 4 0.60 1.40 0.318 5 0.80 1.20 0.432 6 1.00 1.00 0.551 The absorbance reading of the plant extract is 0.275.
- Two identical plant cell samples of equal mass were taken from the same plant and were prepared for an experiment. Each sample was placed in a different solution. The percent change in mass was recorded and graphed over an eight hour period as shown below. Percent change in mass of plant cells +10+ -10+ Fo Cell Sample in Solution A Cell Sample in Solution B Given the results, which of the following statements is accurate? Time (hours) Select one: a. Solution A was hypertonic and solution B was hypotonic to the plant cells. b. Both solutions were hypertonic to the plant cells. c. Solution A was hypotonic to the plant cells. d. Both solutions were isotonic to the plant cells.I need to approximate the width of the paramecium. But, I think my calculations are wrong. Please check, thanks.Below are pictures of leaves from a Garry Oak tree (Quercus garryana). These leaves are found on the same tree, however, the top cross section is of a leaf in the lower canopy, which is relatively shaded. The other of the upper canopy, which is exposed to more sun. ENCER 40x (x.s.) Describe two differences between sun and shade leaves at the macroscopic (leaf) and two differences at the microscopic (cross section) scale and provide explanations for the differences observed in color (specific chlorophyll a vs. b enrichment and accessory pigments) and shape (leaf thickness and width). Note: You do not need to sketch out the leaf/slides.