Potato Puree Lab Report
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Adrian Molina December 1, 2015 Biology Lab The Affect of Cigarette Extract on Food Vacuole Introduction a. background Tetrahymena are Single celled cicilated protists, which are known to tolerate a diverse range of environments. Tetrahymena are often used in experiments because they are easy to culture and have similar life processes as multicellular organisms. Tetrahymena is covered with short hair-like projections or cilia, that sweep food particles into its oral groove.
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In our experiment, we examined the behavior of isopods by conducting the experiment based on our hypothesis: “If ten isopods are put into the test chamber, 5 in sand and 5 in soil, which environment will the pillbug prefer.” We hypothesized that the isopods would favor the soil more than the sand because pillbugs are typically found in soil and not in sand. Pillbugs are favored in soil because the natural role of a pillbug is to eat dead and decaying things but, in sand there are no nutrients available for pillbugs. Pill bugs are mostly found in moist environments, due to having gills, gills only function when they are wet so pill bugs will inhabit places in which air holds a lot of water
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The chamber has three connecting circles, two of the chamber are large and measures about three cm in diameter. In between the two larger connecting circles is a smaller connecting chamber that measures about three cm in diameter. The entire choice chamber is about 1.5 cm tall. To begin with this experiment you will pick up one of the cotton balls and wet it, then place it in the center of one of the large chambers. With the other cotton ball (the dry one), place it in the center of the other large chamber.
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It’s what happens when the Japanese bean bug engulfs soil microbes that destroy insecticides, rendering it instantly immune to the rain of toxins being sprayed by farmers” (Yong 207). Microbes use their abilities to help other species have certain advantages pertaining to their environment and needs. They
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In this experiment, those pesticides will be tested with three trials during a one day period. Terms Used: Ladybug (Coccinellidae) - A family of small beetles, commonly yellow, orange, or scarlet, with black heads, legs and antennae. Pesticide - Pesticides are (according to the Environmental Protection Agency, or EPA) mixtures of substances intended for preventing any pest. Herbal Pesticide - A pesticide made using non-toxic chemicals Alcohol Pesticide - A pesticide that kills insects by causing them to dry out Synthetic Pesticide - A synthetic pesticide is a poisonous chemical or mixture of chemicals that is intended to prevent, repel, or kill any pest Organic Pesticide -
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The purpose of the present experiment was to assess the oviposition of Callosobruchus maculatus by manipulating the size of the Lima bean in context of the oviposition and fertilization success. By placing the same amount of Callosobruchus maculatus and lima beans of varying sizes in petri dish, it allowed the beetles to choose and oviposit their eggs over a two-week span. The small lima beans were separated from the large lima beans into equal amounts contained in two petri dishes with the same number and ratio of male to female Callosobruchus maculatus. Based on the results from the t-test (t[38]= 3.0955) there is a statistical significance between the size of the lima beans and the oviposition/fertilization success rate. Based on these findings
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This often means using toxic chemicals, like bug sprays
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Studies suggest that more than 2 million people in the USA alone are allergic to insects. No wonder pest control is indispensable when it comes to improving public health in a large scale. Without proper and professional pest control, more than half of our food crops can be ruined by pests. The
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This action has a direct repercussions to all organism which are caught and exposed to different chemicals in order to achieve the desire results. A very interesting point of this chapter is that the primary reason for the use of these chemicals to controls the called “pest” are due to the
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shows that certain bees in fields with pesticide had lower reproduction and growth rate. Kessler et al. tested in a controlled laboratory where they looked at three pesticides (clothianidin, imidacloprid and thiamethoxam). Feeders contained neonicotinoid-treated sugar water or untreated solution. Their results showed that the worker bees did not avoid the neonicotinoid-treated sugar water,
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Joshua Miller 12/18/17 Fermentation Lab report Introduction The term fermentation refers to the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat (wikipedia). Sugars are converted to ethyl alcohol when fermentation happens. In this experiment we determined if yeast cells undergo fermentation when placed in a closed flask with no oxygen. Glucose and yeast are mixed together in a closed flask and allowed to incubate for about one hour.
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Biology Design Practical Joshua Edwards What are effects of the volume of a potato and the amount of weight it loses when placed in salt solution? Introduction This design practical uses a potato’s surface area to volume ratio to see what affects it has on osmosis in different concentrations. Osmosis is the movement of water molecules through a cell membrane into an area of a higher solute concentration. The movement goes the way of the solvent with more solute because the lower solute concentration is drifting through balancing the ratio of solute per solvent (En.wikipedia.org, 2018).
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Biological control usually focuses on 1 natural enemy that prove efficiency in terms of pest control in laboratory condition. One criteria we have to take into account is the specificity of viruses as well as any other control agents. In the fields, pest control efficiency can be limited, first of all, because of environmental conditions that affect control agents and decrease their survival time and also the number of hosts infected. Then, in the field, pests are the prey of different predator communities and so the control agent compete with other natural enemies for the same host.
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Though these pest problems persist, the FDA continues to regulate that insect parts, maggots, rodent ecrements, etc. can be present in limited amounts in food, even though it should not be present at all. It is easy to read The Jungle and think that the food processing standards have improved and completely solved the problem, and while the conditions have significantly improved over the years, it is clear that the industry is not perfect, and there are still many areas that need
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Introduction Among all the animals living on earth, insects are the most diverse. They are found in all habitats such as deserts, forests, swamps and even the pools of crude petroleum (Imms, 1964).The number of insects exceeds all other animals and this due to the undeniable fact that they are able to adapt themselves to any kind of environment. The evolution of flight in insect is regarded as the significant breakthrough in the history of Earth. They were the first to dominate the air even before other terrestrial animals and also the time taken for diversification go beyond other organisms which all together lead to their dominance across the planet. Most of the insects are considered important to human beings and the environment as they
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