action spectrum of photosynthesis ib biology
While chlorophyll a really likes the ends of spectrum, chlorophyll b likes lighter blue hues, and carotenoids tend to prefer only the colors dark green through violet. However, milk contains lactose which some people can digest but some cannot. When you add all of these together within a plant, you get what is called the action spectrum. There are two stages of Photosynthesis. Explain the light-dependent reactions. Explain the mechanism of ventilation of human lungs. (ii) Explain the relationship between the absorption spectrum for chlorophyll and action spectrum of photosynthesis for green plants. Investigators carried out experiments to find the relationship between the energy used by mice (the metabolic rate) and their activity. Starting from the concept of gene pool, explain briefly how populations of early vertebrates could have evolved into different groups. Outline the importance of enzymes to metabolic processes. Definition. 2.9.1 Photosynthesis is the production of carbon compounds in cells using light energy. List mechanism for measuring the rate of photosynthesis Go to Internal Assessment Variations in the concentration of carbon dioxide in the atmosphere can be studied using ice-cores. Absorption spectrum of chlorophyll a vs action spectrum of photosynthesis. Essential Idea:Photosynthesis uses the energy in sunlightto produce the chemical energy needed for life, Photosynthesis is the production of carbon compounds in cells using light energy, Visible light has a range of wavelengths with violet the shortest wavelength and red the longest, Chlorophyll absorbs red and blue light most effectively and reflects green light more than other colours, Oxygen is produced in photosynthesis from the photolysis of water, Energy is needed to produce carbohydrates and other carbon compounds from carbon dioxide, Temperature, light intensity and carbon dioxide concentration are possible limiting factors on the rate of photosynthesis, Changes to the Earthâs atmosphere, oceans and rock deposition due to photosynthesis, Drawing an absorption spectrum for chlorophyll and an action spectrum for photosynthesis, Design of experiments to investigate the effect of limiting factors on photosynthesis, Separation of photosynthetic pigments by chromatograph. Mice were kept at one of the three constant temperatures for 24 hours and their oxygen consumption was measured. Biology (Topic 8 Respiration and Photosynthesis (HL)) Flashcards on IB Biology 8.2 Photosynthesis (HL), created by robertospacey on 12/03/2015. The data show the recovery of photosynthesis at different isoprene concentrations 1 hour and 24 hours after the heat treatment. Isoprene is a chemical synthesized and emitted in large amounts by some plant species, especially oak (Quercus sp.) Using the results in the graph, deduce the effect of the presence of fosmidomycin on the rate of photosynthesis in the leaves. Each group was given the same amount of food and either a soft drink with a different sweetener or water. The two – ito system was also discovered by action spectrum. Oxygen is needed to complete aerobic cell respiration. Outline the effect of drought and of re-watering on the rate of photosynthesis. Outline the light-dependent reactions of photosynthesis. The Action Spectrum defines the wavelengths that are most effective for photosynthesis - done by measuring oxygen output of actual leaves under different spectrum lighting. Based on the release of oxygen (O 2) it is of 2 types-. To test the effect of isoprene on a plant that does not normally produce it, leaves of common beans (Phaseolus vulgaris) were treated with heat stress at 46°C and were supplied with isoprene in the airstream. The graph shows the relationship between fork length and lipid content for O. nerka caught during autumn 2008 and winter 2009. Some wavelengths of light, particularly in the blue and the yellow-orange range, result in a higher rate of photosynthesis than would be indicated by the absorption of those wavelengths by chlorophyll a.. Explain how flowering is controlled in long-day and short-day plants.  a. The graph shows fork length frequency of juvenile O. nerka caught during their first months in marine waters in autumn 2008 and ocean age one O. nerka caught 15 months later during winter 2009 in the North Pacific Ocean. Photosynthesis uses light energy to produce carbon compounds in cells. They found that the amount of time mice are active depends on the time of day, whether they are single or in groups and on the temperature of their surroundings. One of the stages of aerobic respiration is called the link reaction. Describe the overall trend in body fat accumulation for the four groups of mice. Studies investigated the role of glucose and fructose in the development of pancreatic cancer cells. The protein hemoglobin transports oxygen to cells. Outline photoactivation of photosystem II in the light-dependent reaction of photosynthesis. Visible light has a range of wavelengths with violet the shortest wavelength and red the longest. This process has been studied in the Pacific Ocean near Hawaii, by measuring carbon dioxide concentrations in the atmosphere and in surface water every month, from October 1988 onwards. Draw a labelled diagram to show the structure of the plasma membrane. Distinguish between active and passive movements of materials across plasma membranes, using named examples. The graph below shows the results for single mice and the mean values for group mice. Chlorophyll absorbs red and blue light most effectively and reflects green light more than other colors. Draw the absorption spectrum of chlorophyll. Explain how chemical energy for use in the cell is generated by electron transport and chemiosmosis. Compare the results for the single mice at 15°C with those for the group mice at 15°C. The oxygen concentrations of water near the gills and in the body fluids were measured, at a range of temperatures from 0°C to 9°C. trees. Using all of the data, evaluate the evidence that suggests the consumption of large amounts of fructose poses a risk to human health. Both oxygen and carbon dioxide are soluble in water. Explain why oxygen consumption is used as a measure of metabolic rate. Explain the light-independent reactions of photosynthesis. each photosynthetic pigment absorbs specific wavelengths of light Photosynthesis is a-Redox reaction. Outline, with examples, the types of carbohydrate found in living organisms. It shows which wavelength of light is most effectively used during photosynthesis. Their first months in marine waters are spent foraging and growing near the shore line. Pollutant transport was studied in a population of O. nerka in the Copper River (Alaska). Respiration after glycolysis has occurred spectrum ; the dotted line is the rate photosynthesis... The production of ribose respiration, oxygen is consumed and carbon dioxide between water and atmosphere, 1988. 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