affect the distribution of chemicals throughout the cell? Hypothesis: The larger the cell is‚ the more difficult it will be for the chemicals to reach the centre of the cell‚ and diffuse throughout it. This is because there will be a higher surface-area to volume ratio in the larger cells‚ making the centre of the cells further away from the surface. Therefore‚ when dipped in sodium hydroxide‚ the larger cells will not be dyed pink all the way through like the smaller cells after the ten minutes.
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Sammy Hassan Mrs. Droege Biology‚ 4B September 7‚ 2007 Surface Area to Volume Ratio S.Hassan‚ September 7. 2007 AISJ‚ Jeddah Saudi Arabia Surface area is known to be beneficial to keeping organisms alive it allows huge organs such as the intestines to fit in a small area by being coiled and packed together tightly. This experiment looked if the surface area to volume ratio affected the speed of a chemical reaction. For this experiment‚ a film container was filled one-half full with
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Applications of Differentiation 1. If a line y = x + 1 is a tangent to the curve y2= 4x ‚find the point the of contact ? 2. Find the point on the curve y = 2x2– 6x – 4 at which the tangent is parallel to the x – axis 3. Find the slope of tangent for y = tan x + sec x at x = π/4 4. Show that the function f(x) == x3– 6x2 +12x -99 is increasing for all x. 5. Find a‚ for which f(x) = a(x+sinx)+a is increasing 6. Find the intervals in which the function f ( x ) = x3 - 6x2 + 9x + 15 is
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each. Along this line‚ the midpoint of the base of one triangle is the vertex of the next‚ as shown in the diagram below. What is the area of the region that is covered by the union of the five equilateral triangular regions? Answer: Question Attempt 1 Attempt 2 Attempt 3 1 Triangles The area is: The area is: The area is: Time Score: Question First Attempt Second Attempt Third Attempt Correct (100) Time/Pts Correct (75) Time Correct
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10cm and a width of 3cm. Then find the volume of the box and the total surface area of the paper used to make the box. T.S.A: 5 rectangles and 4 squares 5 x L x W + 4W = 5 x 10 x 3 + 4 x 9 = 186cm Volume: 5 rectangles and 4 squares L x W x H = 10 x 3 x 3 = 90cm Q2. Make another box with the same general shape‚ but chose a different length and width. Then find the volume of the box and the total surface area of the paper used. T.S.A: 5 rectangles and 4 squares = 5 x 4 x 2 + 4 x 4 = 40
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depend upon the efficient transport of substances into‚ out of‚ and throughout living cells. The process of diffusion can be easily visualized by adding a drop of blue food coloring to a glass of water. Initially‚ the food coloring remains in a small area in the water‚ dying it a dark blue. Over time‚ the molecules of food coloring collide with each other‚ and with molecules of water‚ and the food coloring eventually disperses throughout the entire glass of water‚ resulting in a light blue color in
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81 bars Work: Solute potential: (ψS) = – iCRT = (-2)(.3)( 0.0831)(297)=14.81 bars Water potential: ψ = ψP + ψS = = water potential= 0 + 14.81= 14.81 LAB PART 2 Part 1: What factors limit cell size? 1. What is surface area? Area of given surface 2. What is volume? Area inside a shape 3.
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NATIONAL SENIOR CERTIFICATE GRADE 12 MATHEMATICAL LITERACY P1 NOVEMBER 2011 MARKS: 150 TIME: 3 hours This question paper consists of 15 pages and 1 annexure. Copyright reserved Please turn over Mathematical Literacy/P1 2 NSC DBE/November 2011 INSTRUCTIONS AND INFORMATION 1. 2. This question paper consists of SIX questions. Answer ALL the questions. Answer QUESTION 6.1.3 and QUESTION 6.1.4 on the attached ANNEXURE. Write your centre number and examination number in the
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will improve the weaknesses of the existing system. There are few limitation found in the existing system. For example‚ the other four existing system was made up for business inventory management‚ but Sakura Residential Store system is a system which is proposed specifically for residential college store. Other than that‚ the extra feature included in the proposed system is that user can take photo of their item and upload the photo into the item check in form. This will enable the user to check
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Trip Report to Perwira Residential College UTHM Universiti Tun Hussien Onn Malaysia 22 September 2012 Attendee: Muhammad Hafiz Bin Abu Bakar Introduction The trip was held to look at planning activities‚ condition and facilities provided at Perwira Residential College UTHM. This trip was also to visit the management of student that stay in residential collage out of main campus Universiti Tun Hussien Onn Malaysia. Perwira Residential College is one of the residential college out of main campus
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