Download D. Carbon dioxide to glucose The carbon from carbon dioxide is

SOLUTIONS
DiagnosisTest:EdexcelCOREScience–CarbonCycle(15marks)
1. Whatconversionincarbonoccursincombustion?(circlethecorrectanswer)
A. Carbondioxidetofuel
B. Glucosetocarbondioxide
C. Fueltoglucose
D.
Carbondioxidetoglucose
(1mark)
2. Fillinthegaps:
Thecarbonfromcarbondioxideisusedtomakecarbohydrates,fatsandproteinstomakeupthe
bodyofplants.
plantscarbondioxide
protein
aminoacid
carbon
microbes
(3mark)
3.
Whatischalkformedfromandhowdorockscontributetothereleaseofcarbondioxide?
•
•
Chalkisformedfromfossilisedseacreatures.
Rainwaterisslightlyacidicandthisreactswiththechalkandreleasescarbondioxide.
•
Metalsbelowcarboncanbeextractedbyreductionusingcarbon,coke,orcharcoal.
(3marks)
4.
Whatarethetwoproductsofrespiration?
Carbondioxideandwater
(2marks)
www.pixl.org.uk
ThePiXLClubLtd,Companynumber07321607
5. QWC:Describehowlivingthingsareinvolvedintheconstantcyclingofcarboninnature.
QWCSuggestedmarkingguidance(Total6marks)
MarksawardedforthisanswerwillbedeterminedbytheQualityofWrittenCommunication(QWC)aswellasthe
standardofthescientificresponse.Teachersshouldapplya‘best-fit’approachtothemarking.
0marks
Norelevant
content.
Level1(1-2marks)
Level2(3-4marks)
Level3(5-6marks)
Oneprocessdiscussed.
Thespelling,punctuation
andgrammararevery
weak.
Theorganismsnamedinatleasttwo
processes.
Thereisreasonableaccuracyin
spelling,punctuationandgrammar,
althoughtheremaystillbesome
errors
Allprocessdiscussed.
Theanswershowsalmostfaultless
spelling,punctuationandgrammar.
Photosynthesis:
•
greenplantsandalgaeremoveCO2fromtheatmosphere–passedonwhenplantsareeaten.PlantsuseCO2
tomakecarbohydrates,fatsandproteins.
Carbondioxide+wateràglucose+oxygen
Respiration:
•
livingorganismsuseoxygentobreakdownglucoseCO2isawasteproduct.Decomposersrespiretoo
Glucose+oxygenàcarbondioxide+water
Combustion:
•
fossilfuelscontaincarbon,whenweburnthenCO2isproduced
Fuel+oxygenàcarbondioxide+water
(6marks)
1
© Copyright The PiXL Club Ltd, 2016