- Messages
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- Reaction score
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NH4+ ---(nitrosomonas)---> NO2- ------(nitrobacter)-----> NO3-Ok thanks! but the nitrosomonas and nitrobacter are in correct place right?
YES they are on the correct spot.
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NH4+ ---(nitrosomonas)---> NO2- ------(nitrobacter)-----> NO3-Ok thanks! but the nitrosomonas and nitrobacter are in correct place right?
There is a loss of energy at each trophic level by respiration/egestion/excretion so less energy available to Herons. Heron is largest in size in the food chain and require large amount of energy to fulfill its requirements so less of them exist as overall less energy available.somebody help with nov 14 /23 Q2 C
MS mentions reference to sizes of individuals.. can somebody explain what reference needs to be made?
The mean increase in the control culture is 6.18.https://docs.google.com/viewerng/vi...wp-content/uploads/2012/11/9700_w09_qp_51.pdf
Can some one please do 2) c) ii)
The mean increase in the control culture is 6.18.
The initial no. of cells present is given = 3000 = 3.0 (as plotted in the table)
Using the given formula:
(6.18-3.0 / 3.0) * 100
The atria is filling with blood, but it isn't itself contracting in KHey! Guys could you please help me out here? My final AS bio paper 2 is tomorrow! Pray that it goes well!
Anyway, so in this question, for K, the left ventricle is relaxing and so is the left atria, and the av valve is open and the aortic valve is closed, so the conditions are same as in the H stage, so why is the left atria relaxing in K? Shouldn't it contract?
Is there a mistake in the mark scheme?
heterotrophs are organisms that feed on other organisms to obtain the organic compounds.what is the proper definition of heterotrophs ? (2 Marks)
a group of different organisms is community? btw its ok if i got this one wrong i thought i was going to get all 5 wrong.... i'm just too poor in these type of questions.we can't discuss the paper today its part of the rules of XPC btw 2 is organisms
2 Is a populationFill in the blanks :
1. habitat
2. community
3. consumers
4. niche
5. ecosystem
am i right?
I agree with youIt was a good paper, but not up to the point. You see some questions were really tricky but some were just normal. What about you guys ?
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