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BIO – Photosynthesis & Respiration Hands-On Labs,Inc
.jpg”>Some organisms, however, do not require oxygen at all to break down sugar into ATP; these undergo a process known as fermentation. Fermentation requires an anaerobic environment (no oxygen) and produces byproducts that are different from those produced during cellular respiration. One of these byproducts is alcohol, a major ingredient in beer. Beer is produced by yeast that is undergoing fermentation. Many organisms can do either process, depending on the availability of oxygen or other nutrients. If the required materials are not present, this affects an organism’s ability to grow and sometimes to survive. Factors that can affect an organism’s metabolic pathway include temperature, sugar availability, and the presence or absence of oxygen. All of the processes in an organism, from creating molecules to breaking them down, are collectively known as that organism’s metabolism.
We should be able to count the number of disks as a representation of the rate of photosynthesis occurring in each experimental setup.The resulting graph from this part of the lab should look similar to this:Note that as we increase the watts from 40 to 150 (in columns 2 through 5) we can see an increase in the rate of photosynthesis.
Photosynthesis &Respiration Hands-OnLabs,Inc
Red and blue light support the highest rates of photosynthesis (although white light causes the most disks to float, remember that white is all wavelengths so it can be expected to result in the highest percentage). The process of chromatography, which separates complex mixtures into their component parts based on their solubility in different kinds of solvents, can help identify some of the pigments used in photosynthesis.For a good description of the varying types of pigments found in this part of the experiment, read the bottom of page 123 and the top of page 124 in your laboratory manuals.
In this activity 'Demonstrating Photosynthesis with Bromothymol Blue' students use Bromo blue to photosynthesis occurring. Students use the indicator to show the presence of Carbon Dioxide and the lack of its presence after it was used by a sprig of elodea.
Cellular Respiration & Photosynthesis Lab by Mike …
According to ("Estrella mountain," 2007)
6H2O+6CO2 ----------> C6H12O6+6O2 represents the process of photo synthesis
C6H12O6+6O2 ----> 6CO2+6H2O+38 ATP represents the process of cellular respiration (Siegle 2004)
These equations show that the oxygen released from photosynthesis is directly used in cellular respiration.
Variable: Oxygen Consumption (cm on Manometer)
Experimental: Brassica rapa & Armadillidium vulgare
Control: Bead Oxygen Consumption
Constants: Container Size, Respiration Time, Temperature, Solution Placed in (water), Pressure 300ml Bicarbonate Solution (.2%)X2
100 W CFL
40 W CFL
20 Spinach Disks (Spinacia oleracea)
Hole Punch microrespirometers seeds beads pillbugs The table and the graph show the relation between photosynthesis (O2 production) and time (minutes).
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Respiration & Photosynthesis Virtual Labs & Games …
The PASPORT Carbon Dioxide Gas Sensor measures carbon dioxide concentration CO2 (parts per million) in gases such as air. Ideal for studies of photosynthesis, respiration, fermentation and more.
Cute foldable a for cell respiration and photosynthesis ..
.jpg”>One of the most fundamental divisions among all living things is based upon where an organism derives its energy. As we know, energy is critical for life. It fuels all actions in a living thing, from movement to sensory processing, to cell repair and growth. And while all organisms must undergo some processes that require energy—not all move and process stimuli, but all living things grow and repair—the source of that energy is a great dividing line amongst living things, dividing the heterotrophs (who get their food from outside of themselves) from the autotrophs(who make their own food). The distinction is a relatively clear one most of the time. The question boils down to whether an organism can make its own energy (usually using the sun—see the plant below) or it needs to take in the energy from the world at large (by consuming some food source—see tiger to the left). While it may at first appear to be a simple matter of plant versus animal, it is actually a little more complex than that. There is a plethora of microorganisms (like bacteria, fungi, and protozoans) that are either autotrophic (usually photosynthetic—using the sun to make sugars for food) or heterotrophic (taking in an energy source from their environment).
Plant Respiration and Photosynthesis Lab: PASCO
.jpg”>Once and organism has the energy it needs, the sugar must to be converted into a form that is useable by that organism—typically into a molecule called ATP (adenosine triphosphate). ATP is the molecule responsible for all activity within the cell. In most organisms the conversion from raw energy (sugar) into usable energy (ATP) is called respiration. Don’t confuse the respiration that involves us breathing with the respiration that produces ATP. Keep in mind, though, that in vertebrates, respiration is related to breathing because breathing provides the needed oxygen and helps remove the byproduct carbon dioxide. External respiration is breathing while aerobic cellular respiration is the conversion of sugar into a usable form in the presence of oxygen.
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