(Original post by Chihiro94)
Niether have we. Does anyone have any examples or guidance? I want to go ahead and start (I really don't trust my teacher)
lets go through this essay "Transfer Through Ecosystem"
make a plan - jot down all points
2nd Expand on your points.
lets start cracking
An ecosystem comprises all the interactions between all the biotic (living) and abiotic (non-living) features in a given area at a given time. When these features interact, chemical elements, materials and energy are transferred and flow through the various components. This essay will describe these transfers with an emphasis on compounds of carbon, nitrogen, water and energy.
1st paragraph define ecosystem, collate all the points you'll include the rest of your essay in this paragraph.
from the definition, there is abiotic factor that is transferred through ecosystem, expand now,
abiotic factor for instance light
+Light-->absorbed by chlorophyll-->excites e- to high energy level-->ATP formed-->NADPH formed through photolsys-->photlysis replaces the lost e.
+ATP and NADPH used in light independent-->to reduce GP to TP--> TP forms glucose & regenerates RUBP.
+Glucose is used as respiratory substance in the intestinal epithelium-->provide energy for Na-Glucose co-transport-->glucose enters through carrier protein channel using facilitated diffusion into blood.
+In the cytoplasm glucose is phosphorylated to TP-->2 ATP and H produced-->pyruvate formed penetrates to mitochondria if o2 present, if not lactate/alcohol in plants is formed.
pyruvate-->Acetyl CoA, CO2 and H released--> 4C Oxaloacetate combines with 2C Acetyl CoA to Form 6C Citrate in the kreb Cycle.
all the H combines with NAD and FAD to form FADH and NADH.-->this is used in ETC where e- transported through channel proteins in redox reaction-->ATP forms
+Describe how N2 from the air is used to form No3 and explain how this is transferred to the plants.
+How water is absorbed from roots through apoplastic and symplastic pathway to xylem and into the leaves.
(Original post by EffKayy)
Got an A in biol4 but im SO worried about biol5. How am i supposed to revise for the essay, like I have to know everything from the syllabus? Are you guys going to revise the previous units then too?
Yes, I've already made revision notes for Unit 1 and have the ones from Unit 4, just need to make Unit 2 notes.