and suggested plans for content 1. The process of diffusion and its importance in living organisms Definition Fick’s Law Types of diffusion e.g. Facilitated diffusion‚ osmosis Gas exchange in unicells‚ fish‚ mammals and plants Digestion and absorption of products Exchange of materials between blood in capillaries and tissues e.g. placenta Transpiration‚ root pressure‚ water and ion uptake by roots Translocation and mass flow hypothesis Osmoregulation by blood and kidney‚ unicells e.g. Amoeba
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Organization of pigments in photosystems. a) What is the concept of a photosystem? b) Photosystems are organized into two subcomponents: * antenna complex: Lots of pigments (A‚ B‚ and carotenoids) Pigments along with some proteins that organize some pigments about 200 found‚ scaffold proteins * reaction center complex A pair of chlorophyll A are found
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Biological Membrane Study: HCl‚ NaOH‚ SDS Objective and Hypothesis: The objective of this lab is to determine the effects of SDS‚ HCl‚ and NaOH on red cabbage cell membrane. Prior knowledge can tell us that the red cabbage is a red-purple color due to a pigment called anthocyanin. This is what we will be testing in the experiment. We also know that HCl is a strong acid (very low pH) and that NaOH is a strong base (very high pH). From information learned in this course (lecture/lab) we can assume that both
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with photosynthetic abilities (pigments called chloroplasts) as a chemical energy source. Living chloroplasts can be readily isolated from live plant tissue and used to investigate photosynthesis (Lilley et al. 1975; Halliwell 1984). Photosynthetic organelles are Eukaryotic and are fundamental for the survival of not only the organisms themselves‚ but the entire ecosystem around them as well. After the electromagnetic radiation is completely absorbed by the pigments‚ the electron transport chain (ETC)
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LABORATORY REPORT FOR BIO411 Experiment 5 : Cellular Respiration Experiment 6 : Photosynthesis Title: Cellular Respiration Objective: To observe and determine cellular respiration in yeast/onion cells. * Measure respiration rate using different substrates. * Measure respiration rate at different temperature. Introduction: In this laboratory experiment‚ we are given 3 task. The first one is respiration in yeast. Second is respiratory indicator and the third one is observing
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amounts of nitrogen and phosphorus. 2-3 months after setup when the aquatic plants have spread their roots and start growing vigorously‚ the aquarium will usually face a lack of iron‚ one of the trace elements which help to maintain leaf color‚ due to the vigorous absorption of nutrients by the growing plants. When about one year has lapsed‚ the aquarium water becomes increasingly acidic. The liquid fertilizer which contains different balances of trace elements commensurate with such changes in the
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plant’s chlorophyll traps light energy and sugars (glucose) are produced. In plants‚ photosynthesis occurs only in cells with chloroplasts. Water (H2O)‚ carbon dioxide (CO2) and light energy are required. The light energy is absorbed by the green pigment‚ chlorophyll‚ and is converted into chemical energy‚ which causes the water drawn from the soil to split into molecules of hydrogen and oxygen. The hydrogen combines with the carbon dioxide in the air‚ forming the sugar. Oxygen from the water molecules
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similar wavelengths and and violet light would have a rate similar to blue because of their similar wavelengths. White light at the distance of 25 cm produced a lot more oxygen than the colored lights at the same distance because it contains the entire spectrum of visible light and the chlorophyll would absorb all those wavelengths except for green. That would cause the plant to have a high rate of
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this reduction reaction ultimately come from water‚ which is then converted to oxygen and protons. Energy for this process is provided by light‚ which is absorbed by pigments. Chlorophylls absorb blue and red light and carotenoids absorb blue-green light but green and yellow light are not effectively absorbed by photosynthetic pigments in plants; therefore‚ light of these colors is either reflected by leaves or passes through the leaves(Arizona 2007). This is why plants are green. A certain colors
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through it and some aren’t able). 3. • • • Cytoplasm Contains cell organelles. Food substances. Mostly H2O. 4. Vacuole/Sap vacuole/Large central vacuole • Mostly H2O. 5. Nucleus • Controls all activities of a cell. 6. Chloroplasts • Contains green pigment called Chlorophyll which is important for doing Photosynthesis. 7. • • • Differences between plant cells and animal cells Only plant cells have cell wall. Only plant cells have
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