Lab 1 1. The white charge producer has a positive (+) polarity. The blue charge producer has a negative (-) polarity. 2. The positive charge builds significantly then remains as the charge producer is removed. 3. The negative charge builds significantly then remains as the charge producer is removed. 4. When the white charge producer is lowered then removed from the ice pail with out touching the positive charge builds then drops when the charger is removed. 5. When the ice pail
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Question 1 Points: 10 out of 10 This level of organization is the defining level of biology. As far as we know‚ life is an emergent property that exists at this level. Below this level‚ no single entity is truly alive. population cell CELL CELL CELL molecule organism Question 2 Points: 10 out of 10 Your aquarium contains three goldfish‚ one turtle‚ some plants‚ and millions of bacteria and algae. All those organisms together form a(n): Population Ecosystem
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and disadvantages in using a TLC sheet of a different length. For example‚ it becomes a disadvantage if the TLC sheet in this lab was 5 cm shorter. If this were the case‚ then (Sample A) would not have shown up or the second spot of unknown substance #3. Moreover‚ the unknown substance‚ which consists of (Sample A‚ would be incorrectly identified as a pure substance and/or as consisting of only (Sample D). Contrary to using a shorter TLC sheet‚ a longer TLC sheet might allow more substances of each
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treatment of a pH shock and neutralization‚ by depicting a constant percentage of immobile cells. Prior to the lab series‚ it was expected that the positive control would present a decreasing percentage of immobile cells‚ and the negative control would present an increasing percentage of immobile cells. The experimental groups‚ testing the hypothesis‚ was inferred to show a constant number of immobile cells‚ after the 60-minute light treatment. Colchicine is a substance that reduces inflammation
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and centrifuged for 20 seconds. A polyacrylamide gel was assembled and the samples were loaded into it. The gel ran for approximately 45 minutes at 160 V. A western blot analysis was done in order to examine the Erk1/2 phosphorylation of the NIH3T3 cells. Three pieces of Whatman paper were wet in transfer buffer and placed on the anode plate. A wet PVDF membrane was placed on top of the Whatman paper. The gel was removed from holder and the stacking gel was removed. Forceps were used to place the gel
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The Effect of Temperature on Beet Cell Membranes and Concentration of Betacyanin Released Introduction Membranes are an important feature of plant cells and they act as a barrier that separates the interior of the cell from the external environment (Campbell et al.‚ 2008). Each membrane layer is composed of a phospholipid layer‚ which is semi-permeable and possesses the ability to control the movement of diffusion. Within the centre of a cell‚ the vacuole that is responsible for storage and
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Lab 1: Microscopy and the Metric System Part A: 1. List the components of the compound microscope and their function. 2. determine the total magnification given that you are using a compound microscope with the following objectives: 4x‚ 10x‚ 40x‚ and 100x 3. what is meant by the depth of field? 4. what is meant by the field of view? 5. describe the process of making a wet mount. ________________________________________________________________________________ 1. -Focal adjustment; used
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Name___________________ Date ___________________ A Child Called “It” by Dave Pelzer Review Worksheet Chapter 1- The Rescue Part one: Character Identification: Describe who the characters are and what relationship they share with the main character. 1. Dave =________________ __________________________________________________________________________ _______________________________________________________________________________________________________________________________
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“Cell Transport Lab” Hypothesis: I hypothesis that there will be a movement of molecules out of the egg‚ and will move into the water solution. Osmosis will occur within the egg‚ and in the process the molecules of the egg will diffuse. Time (hrs) | Observations | Circumference (cm) | * 0 | * Egg is of normal weight and size * No membrane is being shown‚ and is almost perfect | * 14 centimeters | * 24 | * Egg has gotten larger taking in some of the water * Shell is soft
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CELL ANALOGY THE ANIMAL CELL IS BEING COMPARED TO A FOOTBALL TEAM. BY: MYA FREAKIN BROWN AND CALEB FREAKIN MILLER ANIMAL CELL=FOOTBALL TEAM A CELL IS LIKENED TO A FOOTBALL TEAM BECAUSE‚ LIKE A CELL‚ A FOOTBALL TEAM HAS MANY PARTS TO IT WITH DIFFERENT FUNCTIONS. CELL MEMBRANE=OFFENSIVE LINE THE CELL MEMBRANE IS A SELECTIVE BARRIER FOR THE CELL. IT DETERMINES WHAT CAN ENTER OR LEAVE THE CELL‚ SO IT PROTECTS THE CELL FROM ITS SURROUNDINGS. THE OFFENSIVE LINE‚ LIKE THE CELL MEMBRANE PROTECTS THE
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