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Friday, December 3, 2021

cdc write up

 CENTRE FOR DISEASE CONTROL             NAME__________________



Symptoms of the disease: ( 5 marks )




Age, sex and other details of the certain victims who are mentioned in the articles above  ( 5 marks )





Possible disease vectors:  (2 marks)             
        

Food
         Water
         Aerosol
         Soil
         Animal
         Human contact
                  Blood, mucous, saliva,
                  Feces, sexual contact 

Give  Evidence of this disease vectors                                                                     
(10 marks)


List the events of the outbreak and the response of CDC in the order that it took place:  List this accurately and completely.  Number the events and highlight the actions that eventually made the outbreak worse.  List measures taken by the following countries to contain the outbreak: 20

Thursday, December 2, 2021

Nitrogen fixing root nodules. Observing nodules

 We know that plants are important to the ecosystem because they photosynthesize. Did you know that some plants are legumes and these are special because they have ROOT NODULES which are nitrogen fixers.  These root nodules are little rooms where Rhizobium bacteria convert nitrogen gas into ammonium and then Nitrobacter bacterium in the soil  converts ammonium into nitrates. Plants can absorb nitrates to make plant protein.  When those plants are eaten by animals, then animals use the nitrogen to make animal protein.  You can say that all the protein on your body (muscles, enzymes, hair, fingernail etc) was built from nitrogen which was fixed by Rhizobium at some point in time.  




ASSIGNMENT:  10 points

Only certain plants contain these root nodules...amongst them are  bean plants and clover plants.   Look at the morphology of clover plants below.  Look on our school grounds  and find AS MANY DIFFERENT GENETIC VARIETIES as you can.  Upload your clover pic with Frog on a doc or ppt and hand in. 


This picture is from research done by Tashiro et al on the genetics of clover plants.  https://www.researchgate.net/publication/250119450_Leaf_Trait_Coloration_in_White_Clover_and_Molecular_Mapping_of_the_Red_Midrib_and_Leaflet_Number_Traits


ASSIGNMENT: 5 marks 
UPLOAD A PIC OF ROOT NODULES UNDER THE MICROSCOPE