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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
Symbol equation for photosynthesis6CO2 + 6H2O --> C6H1206 + 602
Where are the most chlorophyl found in a leaf?Palliside mesophyl and spongey mesophyll.
Describe the four molecules produced from glucose in biosynthesis?Proriens - glucose + nitrates = amino acids. Lost of amino acids > protien Lipids - used for storage in seeds Starch - Lots of glucose molecules > starch, insolluble glucose stored Cellulose - Used to build and add strength to cell walls
Practical to investigate how light intensity effects photosynthesis1)Fill boiling tube 45cm^2 sodium hydrocarbonate soloution, leave for a few mins then shake air bubbles out. 2)Cut 8cm pondweed and place carefullt in boiling tube. 3)Place 10cm away from light source count n.o. bubbles for 5 minutes. 5)repeat at further distanes at interval of 5cm. 4)repeat 5 times and calculate average mean.
Give 4 extensions to the light intensity practical.1)Collect gas in syringe. 2)Use data logging equipment to mesure oxygen concetration. 3)Use acecate filters to mesure effects of different wavelengths. 4)Use veriegated plants - Drop veriegated leaf in boiling water to kill and preserve it. - Leave in hot ethanol for 10 minutes to remove chlorophyll. - Dip in boiling water to soften then spread in petri dish and cover with iodine. - Areas that had chlorophyl > blue/black, areas without remain pale.
Whats transpiration?The movement of water up a plant caused by evapouration and diffision
What is a pathogen?Microorganism enters body causes disease