PBL by Jerica https://padlet.com/jericaaa/pbl Team members: Jerica, Haidi, Bing Teck en-us 2016-06-14 04:31:03 UTC 2023-04-06 01:37:22 UTC hello@padlet.com haiddddiiiii https://padlet.com/jericaaa/pbl/wish/114592948 2016-06-14 10:44:21 UTC https://padlet.com/jericaaa/pbl/wish/114592948 “Foxglove leaves are known to have medicinal value.” Substantiate with 5 facts to support the statement. (Jerica) jericaaa https://padlet.com/jericaaa/pbl/wish/114672757 1) Foxglove leaves are a source of digitoxin, a glycoside used in the drug digitalis, which has been used as a heart stimulant since 1785, which is used in the treatment of congestive heart failure and to right congenital heart defects in patients.

2) The astringent quality of foxglove that makes it effective in treating certain heart conditions also benefits the body by tightening up the blood vessels and reducing bleeding by stimulating coagulation.

3) Foxglove can be very effective in the treatment of various nervous disorders. It can have a soothing effect on the nervous system. Studies have directly linked the use of foxglove with reduced symptoms of conditions like epileptic attacks and other manic disorders of the nervous system.

4) Foxglove is used as an antidote in aconite poisoning, given as a hypodermic injection.

5) Foxglove also contains one more important glycoside called digoxin; this compound has a diuretic effect on the kidneys. In small or moderate doses, it is a powerful diuretic and a remedy in edema (build-up of fluid in the body in which causes the affected tissue to become swollen.) 




]]> 2016-06-15 02:11:22 UTC https://padlet.com/jericaaa/pbl/wish/114672757 PBL Timeline (Haidi) haiddddiiiii https://padlet.com/jericaaa/pbl/wish/114672957 2016-06-15 02:15:24 UTC https://padlet.com/jericaaa/pbl/wish/114672957 What could be the reasons for the varying concentration? You may cite at least 3 possible reasons (Haidi) haiddddiiiii https://padlet.com/jericaaa/pbl/wish/114673099 Different developmental stages 


Different parts of the trees requires different concentrations of the drug concentration


Different trees might have different amount of fertilisers used thus leading to differing concentrations of the drugs found in the leaves


]]> 2016-06-15 02:18:02 UTC https://padlet.com/jericaaa/pbl/wish/114673099 If you are involved in the leaf-picking trip, describe at least 2 difficulties you could foresee. (Haidi) haiddddiiiii https://padlet.com/jericaaa/pbl/wish/114676494 Difficulty in picking out leaves of the same sizes


Difficulty in ensuring the same developmental stage of the different leaves picked
]]> 2016-06-15 03:17:56 UTC https://padlet.com/jericaaa/pbl/wish/114676494 State the independent and dependent variables and explain your answers. (Jerica) jericaaa https://padlet.com/jericaaa/pbl/wish/114676550 The independent variable is the height where the leaves were picked (cm) while the dependent variable is the drug concentration (mg/100g dry leaves). The height is the independent variable because the research team had control over this since they could choose the height at which to pick the leaves. This would make the drug concentration the dependent variable because the research team had no control over this and it is dependent on the independent variable (height).

]]> 2016-06-15 03:18:42 UTC https://padlet.com/jericaaa/pbl/wish/114676550 In the above leaf-picking trip, state 2 reasonable assumptions made on the data collection. (Haidi) haiddddiiiii https://padlet.com/jericaaa/pbl/wish/114676643 The sizes of the leaves picked were identical


The leaves were of the same developmental stage


The amount of test reagents used to test the leaves were the same


]]> 2016-06-15 03:20:21 UTC https://padlet.com/jericaaa/pbl/wish/114676643 In the above data set, how many variables were involved? (Bing Teck) haiddddiiiii https://padlet.com/jericaaa/pbl/wish/114677321 Two. Height and drug concentration (mg/100g dry leaves).]]> 2016-06-15 03:32:23 UTC https://padlet.com/jericaaa/pbl/wish/114677321 Use Microsoft Excel to plot a suitable graph to enable you to deduce how one variable changes with the other. Find the linear equation that relates the variables.  (Bing Teck) https://padlet.com/jericaaa/pbl/wish/114677697 2016-06-15 03:36:43 UTC https://padlet.com/jericaaa/pbl/wish/114677697 What useful conclusion can you draw from the graph? (Bing Teck) https://padlet.com/jericaaa/pbl/wish/114677942 The higher up the tree the leaves are picked from, the lower the drug concentration of the leaves. Since the absolute r value is 0.777479422, it has a low linear correlation, thus its not a very good fit.]]> 2016-06-15 03:42:36 UTC https://padlet.com/jericaaa/pbl/wish/114677942 In the table below, were the 24 heights different? Suggest how Microsoft Excel may help you to check your answer. (Jerica) jericaaa https://padlet.com/jericaaa/pbl/wish/114695003 No, not all 24 heights were different. Microsoft Excel can be used to compute the frequency of the various heights. Since some heights have a frequency of more than 1, it shows that the 24 heights were not different.

]]> 2016-06-15 08:02:12 UTC https://padlet.com/jericaaa/pbl/wish/114695003