Digestion begins in the mouth when one eats food. It begins the moment one takes a sandwich bite. The teeth are used to break the sandwich that contains lettuce and pickles into smaller particles or boluses so that the enzymes can digest the food much easier. Lettuce contains carbohydrates‚ proteins and fat. The tongue helps turn food in the mouth and mix with the saliva in the mouth which contains salivary amylase enzyme. It then passes through the esophagus to the stomach which is a mixer and grinder
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Objective: To investigate how pH affects the rate of protein digestion Hypothesis: I predict that since pepsin breaks down the material the quickest at a pH of 2 in the stomach‚ test tubes #3 will reduce the greatest because it has pepsin to further break down the egg. Whereas the other test tubes will have a smaller reduction. I think test tube #2 will have the second largest reduction rate and then #6 because they all will have a greater rate at breaking down the material‚ Then‚ I predict the
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Notes by Ankur upaadhyay gujarat board/combined science igcse.9998791839 india. Q.1 Explain transportation of water in plants. A.1 (1) Higher plants possess xylem which is associated with the transport of water. (2) Water absorbed by the root from the soil is transported to stem‚ branches‚ leaves and flowers. (3) The main structural components of the xylem responsible for the transport of water are tracheids and vessels. (4) As the root cells are directly in contact with soil‚they take up
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3.0 Introduction The methodology involves five main steps; the collection of hair samples‚ the distribution of questionnaires‚ the washing of samples‚ the digestion of the samples‚ and the analysis of metal contents in the hair. 3.1 Materials and reagents used during the experiment The apparatus and chemicals that were used in the previously mentioned experimental steps are summarised in table 3.0. Steps Materials Reagents Collection of hair samples 1. Stainless Steel Scissors 2. Plastic bags
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Erasistratus’s model of the respiration and blood distribution is considerably more mechanical than Aristotle’s due to the technological advances that were thriving in Alexandria compared to Athens. Both scientists base their models of respiration and blood distribution in the body from technological-ladenness of observation. Erasistratus proposes that heart uses force propulsion to distribute air and blood throughout the arteries and veins. His concept focuses on “the filling towards what is being”
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Problem: Does prior exercise affect the ability to squeeze a clothespin? Hypothesis: After exercise‚ people will be able to squeeze the clothespin faster than those without prior exercise. Materials: For this experiment a timer and a clothespin were used. Methods: To begin this experiment an individual was asked to squeeze a clothespin as many times as possible within one minute and the results were recorded. Then this same individual was asked to exercise (run in place‚ preferably)
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BIO 219 Group 1 Section 66 October 19‚ 2012 The extraction of purified DNA from A. fischeri by restriction digestion using Sal I enzyme and pGEM for shotgun cloning Introduction: The ultimate goal of this experiment is to isolate the lux operon‚ a targeted piece of DNA that causes bioluminescence‚ from Aliivibrio fischeri and insert it into the DNA of Escherichia coli in order to make it glow. A. fischeri is a gram-negative bacteria which participates in a symbiotic relationship with
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necessary for digestion of lipids‚ carbohydrates‚ protein? Certain conditions are required for digestion. I will find that enzyme is required for digestion of lipids‚ carbohydrates‚ protein. There are many conditions that are necessary for digestion of lipids‚ carbohydrates‚ protein such as pH and enzyme and substrate. The test tube that digestion of lipids occurs in was test tube 1‚3‚4‚ test tube 2 there was no digestion because there was no enzyme. Test tube 1 was the fastest for digestion because the
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Cellular Respiration 1995: Energy transfer occurs in all cellular activities. For 3 of the following 5 processes involving energy transfer‚ explain how each functions in the cell and give an example. Explain how ATP is involved in each example you choose. Cellular movement Active transport Synthesis of molecules Chemiosmosis Fermentation 1982: Describe the similarities and differences between the biochemical pathways of aerobic respiration and photosynthesis in eukaryotic cells. Include
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During the simulation an assessment of Mr. Bright’s limb circulation were performed. Performing circulatory observations on an individual who has recently undergone a PCI is crucial for detecting any localised vascular complications such as bleeding‚ hematoma‚ swelling‚ ecchymosis and pseudo-aneurysms. When learning in the hand over that Mr. Bright had “cold” feet post-op‚ it became clear that a prompt assessment for the colour‚ warmth and sensation of Mr. Bright’s feet and lower limbs was necessary
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