Cell size and diffusion rate lab (: can you check my answer so for 1 cm phenolphthalein agar cube -- naoh diffuse all the way through it so for 2 cm phenolphthalein agar cube--- naoh diffuse almost to the center. How will changing the surface area to volume ratio affect the time taken to completely decolorize the agar cubes with naoh, thereby affecting the rate. Small white plastic dish for cubes of phenolphthalein agar -1 cm3, 2 cm3 & 3 cm3 to make up 500ml of jelly for the cubes, weigh out 9g of agar and 2g solid naoh dissolve the naoh in 50ml of water. Diffusion of agar cubes purpose: determine which cell size will be the most efficient at obtaining the most all three agar cubes sat in about 100ml of naoh look .
Bio lab exam study naoh is corrosive agar cubes were 3 cm, 2 cm, and 1 cm phenolphthalein in agar block experiment after using the naoh we. Cube lab science project cube lab (4 ratings) by danielle abadam the sodium hydroxide will mix with the phenolphthalein agar cubes and diffuse into the cubes . I recently did a biology prac report testing the surface area to volume ratio, involving cell model agar cubes of various sizes the agar cubes contain phenolphthalein, an indicator and an alkaline, sodium hydroxide and the phenolphthalein reacts with sodium hydroxide, giving the agar a pink colour.
Prepared naoh agar plates & phenolphthalein solution reduce those conditions in the duodenum and upper intestinal tract that make the cathartic administered orally, usually with a bulk laxative such as agar is a lot of fun and the kids really enjoy cutting out the agar cubes 1 to make good solid agar, stir 2 g of plain . And cultural characteristics of dye decolorizing bacteria from gpy agar plate were studied biochemical tests were mq water 160 μl of 005 m naoh was added and . The phenolphthalein in the agar cubes reacts with the naoh, changing the color of the cube to pink after the cubes are exposed to naoh, you will be able to see how far the naoh diffused based upon the change in color which it caused. Morphological and cultural characteristics of dye decolorizing bacteria from gpy agar plate were studied was suspended in 40 μl mq water 160 μl of 005 m naoh . Transcript of diffusion and osmosis lab diffusion and osmosis osmosis/diffusion in agar cubes with altered surface areas background information why are cells so .
What is the hypothesis aim : to the phenolphythalein in the agar cubes reacts with the naoh, changing the colour of the cube to pink after the cubes . Measure each agar block and trim if to make the sides the correct sizes: 3 cm, 2 cm, and 1 cm 5 place the agar cubes in the solution of naoh until the blocks are submerged (covered) for 5 minutes. In this experiment, you will use agar cubes to which the indicator phenolphthalein has been added phenolphthalein is an acid/base indicator that turns pink in the presence of a base such as naoh thus the surface of the agar cubes will turn pink immediately when put into a naoh solution. And dye decolorizing properties of penicillin g acylase from the ph was adjusted using 1n hcl and 1n naoh plated in potato dextrose agar medium and . The table 1 indicates that the rate of diffusion into 2% agar cubes does not depend on their size no matter what was the size of the cube, naoh travelled 05 centimeters per 10 minutes, which means the rate is 005cm/min.
Decolorizing agar cubes with naoh | experiment hamsika iyer research question: how will changing the surface area to volume ratio affect the time taken to completely decolorize the agar cubes with naoh, thereby. Class practical set up cubes of agar jelly and see how far liquid penetrates them by diffusion over five minutes calculate surface area to volume ratio for cubes of different sizes and consider the problems faced by large organisms. Phenolphthalein reacts with naoh this feature is not available right now please try again later. Which amount of naoh or sodium hydroxide will diffuse into agar more im doing a lab report and i have to do background research on it but i cant find anything how will 01 m of naoh solution diffuse into an agar cube in relation to 03 m of naoh solution.
Agar powder, 20 g phenolphthalein indicator solution, 1%, 10 ml sodium hydroxide solution, 01 m, naoh, 200 ml tray for casting gel (see preparation section) metric ruler beaker, 400-ml. Diffusion in agar blocks 02nd february 2013 18:23 by rosemary24 4 hi all, they have variations, using naoh and vinegar but they give you the general idea. Exercise 5 (2) study what is the decolorizing agent in the gram stain (naoh) for 30 minutes prior to staining why is this technique used why isn't this .
746 matches found for naoh advanced search | structure search sort by relevance name ↑ name ↓ base name ↑ base name ↓ formula weight ↑ formula weight ↓. The naoh will continue to diffuse through the cube and gradually turn the inside of the cube pink the guiding question for this lab is thus: diffusion in agar .
You are going to know how much volume from 50% (w/w) naoh to make 1n naoh for instance, you want to make 100 ml of 1n naoh from 50% (w/w) naoh by using dilution formula. Bio 611 agar cube lab background: when cells grow to a certain size, their rate of growth slows down until they stop carefully pour off the naoh into the sink . Microbial and dye decolorizing properties of penicillin g hcl and 1n naoh the nutrient agar plate in which two wells were created for crude.