Biology diffusion Science ISA To find out if concentration affects the rate of diffusion. I predict that the higher the concentration of acid the faster the reaction will be. Dependent variable: We are measuring the time taken for the pink indicator to turn clear when hydrochloric acid is added to it. Independent variable: We are changing the molar of hydrochloric acid we are adding to the gelatine cubes. Apparatus: * 1 measuring cylinder * 1 test tube * 1 stop clock * A large gelatine
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turned black also because of osmosis. The only thing that the hypothesis lacked was that starch did not move at all. The beaker stayed yellow before and after because the bag is not permeable to starch. 4B- The hypothesis was supported because the diffusion rate was faster shown from the agar blocks. The materials passed through the membrane easily and quickly in the small cells than the large‚ making them more efficient. The smaller the cell is‚ the faster it can transport signals. The bigger cell
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Outcome 1 Be able to communicate with individuals with dementia 1.3 Use information about the communication abilities and needs of an individual with dementia to enhance interaction Remember that the individual with dementia might be feeling confused‚ anxious‚ irritable and depressed‚ and suffering from low self-esteem. Speak clearly‚ slowly‚ and in a calm and friendly tone. Be aware of body language. Use visual cues‚ pointing to things to show what you mean. Approach the individual from the
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Lab Report #1 Facilitated diffusion By: Kelsey Clark Biology 2401 C1L Dr. Fanini October 2‚ 2017 Facilitated Diffusion Facilitated Diffusion is a type of passive transport that allows for lipid insoluble molecules or molecules that are too large to pass through a membrane. The molecules are able to pass through by binding with protein carrier molecules and moving down the concentration gradient. The rate of diffusion will continue to increase until the carrier proteins are saturated
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Diffusion and Osmosis lab Results: Figure 1a-rate of weight change in 15 min intervals of each concentration. The first tube showed very little weight change. However all other tubes show a greater change the concentration could be the factor that determines the permeability of the sucrose. The sucrose molecules are too large to pass through. Figure 1b- sucrose concentration determines the weight change. In this case based on our results as concentration increases the percent weight change
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Professor Jones Four Goals of Psychology When thinking of psychology the first thought that comes to mind is the stepping-stones. Those stones are the four goals. The four goals are defined as‚ “the scientific study to behavior and mental process (Feldman‚ 4).” These goals are used to break down what is being studied and also to predict events and behavior‚ either good or bad. Those goals or methods are as follows: describe‚ explain‚ predict‚ and control. Describe‚ this is about describing a psychological
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Lab # 2 Diffusion & Osmosis Introduction Kinetic energy‚ a root of energy stored in cells‚ causes molecules to hit into each other and move in new directions. Diffusion is the result of this contact. Diffusion is the random movement of molecules to an area of lower concentration from an area of higher concentration. Osmosis is a type of diffusion. This is the diffusion of water through a selectively permeable membrane from a region of higher water potential to a region of lower water
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After carefully reviewing the case study: Predicting Harry’s Work Effort; I feel that Harry’s motivation is “just acceptable” for his job performance. Overall I felt that the most important thing to Harry was his reputation among his friends and he had irrational concern that they would make fun of him. However‚ he did point out that job security was most important. On getting a raise he valued it at a .5 and scored a promotion at a .9. According to Harry he felt that he had a 50-50 chance of getting
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The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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presidential candidate Donald Trump’s answer to a question about the military. He was asked what he would do about the “social engineering” that is permitting women and transgender people to serve in the military. Trump stated that he too believes the military has become too politically correct. He said he believes the answer is intelligence and not ignorance. He said he would listen strongly to his top military advisors. The first connection this has with the chapter is it about to presidential candidate who
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