Introduction Using microscopes allows humans to see things they’ve otherwise would have never seen before‚ like cells. A cell is the basic unit of life. All living things are made of cells. All cells come from preexisting cells through a process called cellular division. There are two types of cells‚ eukaryotes and prokaryotes. Prokaryotes are very simple and small. They are unicellular and have no membrane bound organelles. Their DNA is found directly in the cytoplasm since they have no nucleus
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Beet Cell Lab Purpose: The purpose of this Lab was to see how much pressure or stress the beet tissue would hold. Hypothesis: I hypothesize that the higher % of the solvent that the higher the colour intensity will be shown on the ph colour scale. The lower the solvent then the less colour shown. Materials: *Test Tubes (4) *Cork Borer *Beets *Water *1% Acetone *50% Acetone *1% Methanol *50% Methanol Procedure: *Cut 4 uniform cylinders of beet using a cork borer with a 5-mm
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Kayleigh Schmidt Purpose 2: Exercise 1 Part A Purpose: The purpose of this lab is to explore inoculation‚ incubation‚ isolation‚ inspection‚ and identification. Inoculation is the placement of a small sample or cells or the material with cells on a culture media that helps these cells grow. Incubation involves the optimal growth temperature in a controlled setting and is when the cells start to become visible. There are two types of inspection‚ macroscopic and microscopic‚ and it helps to identify
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r Virtual Lab: Enzyme Controlled Reactions Instructions 1. Go to the following web-link in order to open the Virtual Lab: http://www.mhhe.com/biosci/genbio/virtual_labs_2K8/labs/BL_02/index.html 2. Open the Virtual Lab: Enzyme Controlled Reactions 3. The virtual lab simulation will be on the right side of the screen‚ and the “Question” column will be on the left side of the screen. 4. Click the monitor in the lab simulation to watch a video about enzyme action. 5. Click the “Information”
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Dynamics Test Review Dynamics: The study of forces that cause motion Types of Forces: can accelerate‚ deform‚ rotate measured in Newtons (N). Force of Gravity: force of attraction between all matter Force of Friction: force that resists relative motion of two surfaes. Always parallel to surface in contact Normal force: force of contact that exists between two surfaces Applied Force: the push or pull Tension Force: the force of a rope or a chain (can only pull) Air resistance: caused by a
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Date: Title: Effect of Exercise on Pulse and Breathing Rate Aim: To observe the effects of exercise on pulse and breathing rates Materials/ Apparatus: Stopwatch Introduction: Procedure: 1. Perform the experiment in group of 3 persons. 2. Decide beforehand who will count the pulse rate; count the breathing rate and who will perform the exercise. 3. Record the breathing rate and the pulse rate of the individual at rest. 4. The individual will do 100 jumping jacks. 5. The individual will
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ACTIVITY 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. __The size and the concentration. ___ 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? __ The molecules were to large to go through. My results matched._ 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your
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Peer Review Worksheet Part of your responsibility as a student in this course is to provide quality feedback to your peers that will help them to improve their writing skills. This worksheet will assist you in providing that feedback. Please use it for each review that you perform throughout the course. Please copy and paste the completed Review into your reply to the post containing the assigned draft. Please do not post your Review as an attachment. Name of the
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B1: The permeability of the cell increases enormously during the action potential. Comte Whitney Electricity is vital for neural function and communication. The semi-permeable membrane and presence of charged particles in solution (ions)‚ enables the cell to have control of an electric potential. The cell The concentrations of Na+ and K+ ions upon either side of a cell’s membrane are not equal. In order for the equilibrium to be restored‚ sodium will attempt to enter the cell‚ whilst potassium will
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CHAPTER 8 1) Access Control List: This network access control determines which IP packets are allowed entry to a network and which are dropped. 2) Access Control Matrix: A table specifying which portions of the system users are permitted to access. Compatibility tests utilize a(n) ________‚ which is a list of authorized users‚ programs‚ and data files the users are authorized to access or manipulate. 3) Authentication: Verifying the identity of the person or device attempting to access the
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