Hong Kong Degree of Second Education Assessment
School-based Assessment Sample Jobs
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TABLE OF CONTENT
Activity C1 C2 C4 HANDSET C6 C7 C8 E3
Title Osmosis in Living Tissue Catalytic Activity of Chemical Action of Electricity upon Substances Encountered in Daily Life Perform All Conductors Obey Ohm's Law? Composting Bioreactor Sunglasses' Protection from Ultraviolet (UV) Radiation Extracting DNA coming from Fruits Just how Cross-linking Adjustments the Houses of a Polymer bonded
Integrated Research Sample SBA Task
Practical Related Activity вЂ“ C1 Osmosis in Living Tissue Student Handout (Version 1) Purpose To look for the water potential of potato tissue. History When two solutions based on a concentrations are separated with a selectively permeable membrane, osmosis takes place. Water will go from the side with higher normal water potential to the medial side with reduced water potential. When a grow tissue is immersed in a solution of higher water potential, water is going to enter their cells simply by osmosis. Because the plant skin cells swell and turn into turgid, the plant tissue increases in size. On the other hand, when the herb tissue is positioned in a solution of reduce water potential, water will leave their cells by simply osmosis. In cases like this, the plant cells will decline in size because the plant skin cells shrink upon losing normal water. For this activity, you are required to design and carry out an research to determine the normal water potential of potato muscle using sucrose solutions of numerous concentrations. The water potential of potato tissue will be indicated in terms of the concentration of sucrose remedy.
Apparatus and Materials 1 ml pipette 10 cubic centimeters pipette Pipette filler Cork borer 6th boiling pipes Petri dish Blotting paper Sealing film Razor cutter Ruler Stop watch 1 . zero M sucrose solution Student Handout вЂ“ C1 (Version 1) webpage 1 of two
Integrated Scientific research Sample SMALL BUSINESS ADMINISTRATION Task
Distilled water Refreshing potato
Security Precaution Take care of the cork borer and razor cutting tool with great care.
Duties 1 . 2 . Use the provided sucrose solution and unadulterated water to arrange a series of sucrose solutions of numerous concentrations. Formulate and carry out an research to determine the drinking water potential with the potato tissue.
Guidelines intended for designing the experiment 1 . 2 . several. 4. 5. 6. several. 8. 9. What biological process is being investigated through this experiment? Precisely what is the independent variable through this investigation? Just how would you change it? What is the reliant variable? How would you evaluate it? The other variables have to be controlled? What are the precautions for this test? What are ideal ways of saving the fresh results? What further take care of data is necessary to find out this particular potential in the potato muscle? What assumptions are made in the determination in the water potential of the potato tissue? Exactly what are the options for error for making the measurements? Suggest ways of improvement.
Student Handout вЂ“ C1 (Version 1)
page 2 of two
Integrated Science Sample SMALL BUSINESS ADMINISTRATION Task
Practical Related Process вЂ“ C1 Osmosis in Living Tissues Student Handout (Version 2) Purpose To determine the water potential of spud tissue. Qualifications When two solutions based on a concentrations will be separated by a selectively permeable membrane, osmosis takes place. Drinking water will complete from the side with higher water potential to the medial side with decrease water potential. When a plant tissue is immersed within a solution of higher water potential, water will enter their cells simply by osmosis. Because the plant cells swell and be turgid, the plant tissue will increase in size. On the other hand, when the grow tissue is placed in a solution of reduced water potential, water can leave its cells by simply osmosis. In cases like this, the plant muscle will reduction in size as the plant cellular material shrink after losing...