The laboratory. In the cell fractionation laboratory, we will use differential centrifugation to create fractions enriched for specific organelles. We will first suspend whole plant cells in a mild salt solution (mannitol grinding medium) and lyse them using a mortar and pestle. A sample of the resulting solution will be the crude fraction.

Dec 06, 2012 · Lately, I’ve been doing a unit on physics with my boys that I prepared years ago when I taught science classes for homeschoolers. Of all the physics experiments we did, these ones on momentum are some of my favorites! Momentum is a fairly easy concept for kids to grasp. Kids know that if they are […] Resources to help you make the most of PBS KIDS and support your child's learning every day. More Parent & Educator Resources

Enzymatic Activity of Lactase OBJECTIVE The purpose of this lab is to explore the properties of the enzyme lactase. By the end of this lab, you should understand the biological function of enzymes and why they are important in the body. You should also examine the specificity of an enzyme to a specific substrate. INTRODUCTION Specifically, students use resonance tubes to compare the speed of sound in our classroom with the accepted value of 340m/s . I start the class with an attention-grabbing video before moving into the actual lab activity. Today's lesson ends with an ABC summary. Sep 11, 2013 · Lab Procedures. There are three parts to this lab. For background, go to the Basics page on Plate Tectonics/Paleomagnetism. Part 1 studies spreading of plates from a mid-ocean ridge. When completing the worksheet you will analyze magnetic profiles of the ocean floor.

Experiment 7 - Rotation and Gyroscopic Precession . Click here for experiment 7 - Rotation. ‹ Experiment 6 - Biceps Muscle Model up

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(I recorded the height on the lab write-up for you). Measure the length of the ramp (inclined plane) in meters; record. Attach one end of the string to the cart and the other end to the spring scale. Measure the weight of the cart. Pulling parallel (along the ramp angle), pull the cart up the ramp at a constant speed with the spring scale. May 21, 2020 · The speed of sound in air (at sea level) is about 1220 km/h (760 mph or 340 meters per second). Compared to light waves, sound waves creep along at a snail's pace—about a million times slower. You see lightning much sooner than you hear it because the light waves reach you pretty much instantly, while the sound waves take about 5 seconds to ...

 THE LIVER ENZYME LAB!  *Enzymes are biological catalysts. They help increase the rate of chemical reactions. Enzymes are most often proteins and their three-dimensional shape is important to their catalytic activity. Because of their 3-D shape, enzyme are specific for the reactions that they catalyze. The students return to the lab in the 6th grade for additional activities which reinforce their 5th grade experience. Feel free to alter these activities for use in your class. A Different Way of Measuring - students determine the area of a dime using a method similar to one used by nuclear physicists to determine the cross-sectional area of a ... To begin your pursuit of bugs as a predator, press SETUP to create a population of bugs, determined by six times the INITIAL-BUGS-EACH-SPEED slider. These bugs that are created are randomly distributed around the world and assigned a speed. When you press GO the bugs begin to move at their designated speeds.

In protein research, the term can apply to either the object of study or the laboratory techniques required to manufacture proteins. This article focuses on the latter meaning of protein expression. However, in practical terms, recombinant protein production depends on using cellular machinery. The National Laboratory for Applied Network Research (NLANR) has as its primary goal to provide technical, engineering, and traffic analysis support of NSF High Performance Connections sites and HPNSP (high-performance network service providers) such as the NSF/MCI very high performance Backbone Network Service (vBNS). Glencoe

Introduction This lab will answer whether or not initial speed affects the time that a projectile is in the air. Also, it will be determined if there is a direct relationship or not between initial speed and time. Experimental Procedure Set the values to the following: Angle – Zero degrees Initial Speed – 10m/s Mass… Aug 25, 2019 · This activity is a lab investigation where students observe, record, and gather data on the speed, acceleration, constant speed, and average speed of toy cars. This activity allows for futher investigation of speed, time, and distance of objects to calculate speed and acceleration. unusual elementary particle that we have yet to detect in laboratory experiments. A. Mass Components of a Galaxy Galaxies are large collections of stars, gas and dark matter that are held together by their own gravity. There are three general types of galaxies: spirals, ellipticals and irregulars.

Speed Lab Stations Page | 2 2. What effect does time have on the speed of a moving object? 3. Which definition of speed (average speed, constant speed, instantaneous speed) did we use in this investigation? Why? 4. What was the independent variable in this experiment? 5. What was the dependent variable in this experiment? 6. Go Speed Racer Go Lab Speed and Acceleration Problems . Marvelous Motion Computer Lab. Speed Problems. ACCELERATIONS PROBLEMS . Big Mass vs. Little Mass Average Speed Lab . Steps for Solving Word Problems . Motion & Speed Volleyball Worksheet . Eyeball Acceleration Lab. Metric Velocity & Acceleration Crossword. Unit 3: Forces . Inertia Lab ... Velocity and Speed 2 Give students 15 minutes in their group to come up with lab procedures. If they are having problems refer them to Pre-lab question number 2. Class Discussion. As a class we will decide on standard procedures to determine the average speed. Before giving them the procedure below, have them share their procedures. Procedure 1.To analyze the effect of substrate concentration on the activity of enzymes. Theory: Enzymes are protein molecules that act as biological catalysts by increasing the rate of reactions without changing the overall process. They are long chain amino acids bound together by peptide bonds. NSF mid-scale award sets off the first extension of IceCube. The National Science Foundation has approved full funding to upgrade the IceCube detector, extending its scientific capabilities to lower energies and thus enabling IceCube to reach neutrino energies that overlap with the energy ranges of smaller existing neutrino detectors worldwide.