• The honeybee detects ultraviolet light patterns on flowers via the photoreceptors in their eyes, allowing them to distinguish between those with pollen/nectar and those without. • The Japanese Dace Fish is able to detect UV light, assisting in mate selection and detection of prey- hence helping survival as prey is able to be
The average CO2 consumption for green light was 0.00773533 ppt/min while all the other colors of light tested are equal to, or exceed 0.01651 ppt CO2 consumed per minute. Graph 1: Amount of CO2 Consumed clearly shows that photosynthesis performed most poorly under green light. Red, blue, and white light each caused more CO2 consumption than green light. Because the pigment in the green, photosynthesising chloroplasts reflects green light, there was little photosynthesis occuring while green light was being shown on spinach leaves. The green light is reflected, rather than absorbed by plants and therefore does not provide the needed sunlight energy to make photosynthesis
Therefore, high exposure is harmful to the aquatic environment, especially for species that reside in shallow water, such as Daphnia (Rautio and Korhols, 2002). This phototactic response is attributed to Daphnia’s natural instinct to protect their internal organs and DNA (Morris et al., 1995). Visible light also aids in repairing the damaged nucleotides that are caused by over exposure of UV light (Morris et al., 1995). Even though their behavior is studied often, there is still little that is known about the physiological effect of visible light on Daphnia (Hylander and Hansson, 2010). Daphnia move away from the visible light due to the UV exposure at different rates, but as the visible light increase, so does the rate at which they move away (Storz and Paul,
Doriana Spurrell What different frequencies and types of light would prompt the Spinach leaves to go through the process of photosynthesis effectively? Purpose: The purpose of this experiment was to see which of the four lights that range across the light spectrum would properly and most efficiently help the spinach leaf perform photosynthesis. Background Information: Photosynthesis is the process in which plants use light energy to transform into chemical energy.
Farm and ranch working has always been around and cheaply available by, migrant workers during the Great Depression and now with immigrants trying to get hired at the farms. Now while the times of both are different with migrant workers existing around the 1930s and the modern immigrants from Mexico, both jobs they get hired at show many similarities. In farms from the 1930s they often picked up desperate workers for cheap pay, as for now it isn't much different. Immigrants who successfully crossed the Mexican borders without getting caught by border control are often hired at farms and ranches. With the measly pay the immigrants receive, the can hardly afford paying a babysitter to care for their children.
Intrinsic factors and extrinsic factors, both contribute to this process. As discussed earlier, UV-induced damage to the DNA causes a poor renewal of the skin. When exposed to harsh sunlight, an individual is also exposed to the UV light that comes along with it. Excessive exposure can cause premature aging in certain individuals and also is observed as severe pigmentation and sunburns as well. The antioxidants, namely vitamin E and vitamin C are majorly targeted by the UV light and thus, reduce the antioxidant capacity of the epidermis on prolonged exposure.
Introduction As we already know UV (aka sunlight and artificial UV lighting) can cause forms of skin cancers. It seems to be common sense now days but we really don’t know how or why specifically and we also don’t really know what preventative measures actually work. As we grow up every day we expose ourselves to sunlight but unless we are going out to the beach or pool, we don’t take preventative measures to keep our skin safe from radiation and some are even attempting to do the complete opposite for beautification.
The absorbance level @ 520 nm obtained from the spectrometer indicates the amount of urea obtained via measuring the absorbance of the light through the supernatant coloration, which was provided by the
Introduction Plants are a major necessity in the balance of nature, people’s lives, and our terrain. We may not realize it, but plants are the ultimate source of food for almost 95% of the world population so says the National Group of Food. It’s a fact that over 7,000 species of plants are being consumed today. Plants are one of the reasons that we get clean water; as they help regulate the water cycle.
