single hydroxyl (-OH) group small structural differences lead to large differences in chemical properties starch found in mushrooms (amylopectin) is a polymer of α-glucose – can easily be digested STARCH = DIGESTIBLE Cellulose found in celery is a polymer of β-glucose – cannot be easily digested by most animals CELLULOSE – NOT DIGESTIBLE • Isomers illustrate that structure of a molecule determines the function of that molecule STRUCTURE = FUNCTION The Molecule of life • Most molecules
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because the lower the concentration of sugar the greater its water potential and consequently the faster the rate of osmosis. The results show that in each of the five sugar solutions‚ the rate of osmosis decreased with time. This happened because the difference in water potential between the inside and the outside of the beetroot time decreased as the experiment proceeded. Osmosis occurred most in distilled water because this contained the highest water potential when compared with the other beakers
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AP World History Chap 4 Inquiry Questions There are very few names of prominent individuals included in this chapter. Why is this so? What is it about the nature of the society and the available historical sources that makes it difficult to discern individuals? - I think there are very few names of important individuals in this chapter
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The purpose of this lab was to observe how molarity concentration affects diffusion.The lab was primarily based on osmosis and diffusion. Diffusion is when the movement of molecules from a high concentration that go to a low concentration to a high concentration to eventually reach an equilibrium. Osmosis is when water will diffuse from high water concentration to low water concentration to reach equilibrium. When the solutions are different the lower concentration solute is hypotonic while the higher
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Biology- Maintaining a Balance Summary 1. Most organisms are active in a limited temperature range 1. identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates Enzymes are proteins which act as catalysts in living things (they lower the amount of energy needed for a reaction‚ therefore increasing rate of reaction). Enzymes speed up reactions but are not used up by them. Enzymes catalyze only one
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Biology 1010 8/27/13 Life: * Order: Pine Cone‚ Bacteria – where things are * Regulation: Regulate their internal environment * Maintain homeostasis * Ex. Breath‚ too much CO2‚ changes pH Sends message to brain * Growth and development: Definite pattern to growth and development * Directed by DNA (genetic material where the genes are found) * Energy processing: All organisms must have energy * Humans: Food (Heterotrophs = other-feeding (fungi and
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Sheet 1.What type of organisms contain biomembranes? All living organisms contain biomembranes. 2.Describe the nature of cellular membranes. Cellular membranes are fluid by nature. 3.What is the major lipid found in membranes? Phospholipids 4.What component of the cell membrane might contribute to maintaining the fluidity of the plasma membranes? Chlosterol 5.Describe globular proteins found in the membrane. They are compacted and folded Amino acids. 6.What percentage of all genes
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Lab Report DIFFUSION AND THE EFFECT OF AMYLASE. Aim: We will interpret and explain the activity of an enzyme added to a solution. We will analyze reactions in different pH ranges. The starch solution will appear blue when mixed with iodine. But after mixing the enzyme amylase to the starch‚ the starches are broken down into simple sugars. Now‚ when the iodine is added‚ no color change exist. Instruments and materials used: 1.) Dialysis bags x2 2.)
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How does diffusion affect the rate of growth? If I placed a gummy bear in various solutions‚ then the gummy bear would change in size‚ because diffusion and osmosis cause the gummy bear to react to the solution’s molecules‚ and further affects the gummy bear’s mass. An experimental lab conducted in class was tested‚ essentially to observe the effects of diffusion/osmosis. More specifically‚ according to‚ “merriam-webster.com/dictionary/diffusion‚” the process of diffusion causes particles to spread
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Grade 10 Biology Revision Guide Characteristics of Living Organisms Nutrition: Respiration: Excretion: Sensitivity: Movement: Homeostasis: Reproduction: Growth: Taking in food for growth and releasing energy. Burning glucose to release energy. Removing waste material like urea formed during chemical reactions. Responding to changes in the environment. Transport inside cells and moving the body. Control their internal conditions. Increasing the number of organisms. Increasing the number of cells
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