Plant Pigments Depending on Photosynthesis. Is the rate of photosynthesis faster when there are extreme light and temperatures present? Paper chromatography is a technique used for separating and identifying pigments. The solvent DPIP, (2, 6-dichlorophenol-indophenol), which is often used to substitute for NADPH, moves up the paper by capillary action. As the solvent moves up the paper, it carries along any substances dissolved in it, which are the pigments.
Photosynthesis is broken down into two separate stages, the light-dependent reactions and light-independent reactions. In the light-dependent reaction, the chloroplast traps light energy from the sun and it is converted into ATP and NADPH energy. In the light-independent reaction, NADPH delivers the hydrogen and carbon dioxide atoms that help form glucose, and ATP donates energy to areas where glucose is put together from carbon. This process occurs in chlorophyll bearing cells. Chlorophyll is an amazing chemical that is the essential ingredient in photosynthesis.
During photosynthesis, glucose is produced from converted sunlight energy by plants. In general, the more light, the faster the rate of photosynthesis. However, research many years ago demonstrated that increased light intensity only increased the rate of photosynthesis up to a certain point. Therefore, the relationship of photosynthesis and cellular respiration is nonlinear (Biggs, Edison, Eastin, Brown, Maranville, & Clegg, 1971). When we put more heat the more molecules get active and produce oxygen (bubbles) to let the plant grow.
These experimental parameters were later abandoned. Identical plantings were conducted again and sunlight levels and predation via caterpillar responses were observed in laboratory conditions alongside controls to study the relationship between both variables and plant growth/survival. Data concluded that sunlight has the largest effect on the fitness of Brassica rapa and higher levels of sunlight coincided with higher levels of growth both horizontally and vertically in plant height, plant width, leaf numbers and leaf are. This research leads a much larger discussion of how plants respond to changing environmental conditions. Introduction: Plants use sunlight to separate water molecules in combination with carbon dioxide to create the sugars it uses to grow and survive and it is therefore highly important in the process of photosynthesis.
Using these solutions can help certain dire environmental consequences such as intensified greenhouse gases, depleted ozone layer, global warming, air pollution, and water pollution. The groundwork for this essay is an article by Monica Hesse titled “Buying Green Products Is an Inadequate Environmental Remedy”. As noted in the title, Hesse believes that people should not buy green products to improve the environment. Rather, they should reduce the amount of their purchases. Buying green would create a problem of consumerism which in turn would create environmental problems.
Wood that is freshly cut (also referred to as green wood) and is considered young compared to older “seasoned” wood. Green wood contains more moisture and is considered “unseasoned”. When examing green wood you may find that is light along the cut edges. Unseasoned wood may be harder to ignite and most likely produce more smoke when burned. However seasoned wood should burn quickly because of its relative dryness.
Then i proceed to take the plant out and measure the longest stem to leaf and it measured 2 3/16 inches thats a growth of 1 3/16. Now if i compare that to the first test with the regular light the first test subject only grew 3/4 of a inch while this one grew over 1 inch more which means that the plant growth light does allow the plant to grow faster and more fuller. Which proves that my hypothesis is correct. I said that the plant growth light will greatly affect the growth of the plant compared to the regular florescent light. The reason why i think the plant growth light allowed the plant to grow much faster and fuller is because of the different types of wavelength of light generated by the light.
Photosynthetic Rate and Light Intensity in Elodea I. Purpose: The purpose of this experiment is to determine the effects of varying light intensities on an Elodea plant. II. Hypothesis: As light intensity increases, the rate of photosynthesis should increase. III.
The data received by testing the two enzymes, Pectinase, and Cellulose would show witch enzyme can remove more juice during this process and decide the data would show the most effective plan to increase juice production for a Connecticut company in the business of making and selling apple juice. III. Hypothesis: If the amount of juice produced by Pectinase (ml) is greater than the amount of Cellulose (ml) then the Pectinase will be more effective because more juice is produced in each trial containing Pectinase. IV. Materials: - Apple Sauce (25 grams per cup) - 4 Cups - 4 Filters - 1 Scale - 1 Graduated Cylinder - 1 Funnel - 1 Stirring Rod - 1 Syringe Enzymes - Pectinase - Cellulose V. Procedure: 1) Take 3 cups, and name the three cups : Cup A, Cup B, and Cup C 2) Place Cup A onto the scale 3) Tare the scale to 0 4) Spoon 25 grams of apple sauce into Cup A 5) Place Cup A from scale onto table 6) Repeat steps 2-5 for cups B and C 7) Fill up the syringe with water to its maximum capacity 8) Release 5 drops of water into Cup A 9) Repeat steps 7 and 8 for Cup B except replace water with Pectinase 10) Repeat steps 7 and 8 for Cup C except replace water with Cellulose 11) Stir each formula with the stirring rod and wait for 10 minuets 12) Place the funnel into Graduated Cylinder 13) On top of funnel place clean unused filter 14) Pour the substance in Cup A into the filter 15) Wait for substance to empty out into Graduated Cylinder 16) Measure the product in the Graduated Cylinder 17) Record data 18) Remove used filter, and wash out the Graduated Cylinder and funnel 19) Repeat steps 12-17 with
But, at 20ºC, room temperature, sound travels at 343 meters per second (767 mph).Liquids:Sound travels faster in liquids than in gases because molecules are more tightly packed. In fresh water, sound waves travel at 1,482 meters per second (about 3,315 mph). That's well over 4 times faster than in air! Several ocean-dwelling animals rely upon sound waves to communicate with other animals and to locate food and obstacles. The reason that they are able to effectively use this method of communication over long distances is that sound travels so much faster in water.Solids:Sound travels fastest through solids.