g. Objective lenses: These lenses are used to view the specimen and are closest to the specimen. A standard microscope has several objective lenses that range in power from 4X to 100X. h. Stage height adjustment: Moves the stage from left and right or up and down. i. Aperture: The hole in the center of the stage that allows light from the illuminator to reach the specimen. j. On/off switch: This switch on the base of the microscope turns the illuminator off and on.
LabAlejandra Lopez 3rd period. LAB PROBLEM How long do onion root tip cells spend in each phase of the cell cycle? OBJECTIVE In this Biolab, you will: * Identify the phases of the cell cycle * Determine the time a cell spends in each part of the cell cycle PROCEDURES * Add the number of cells in each phase and record these numbers in the row marked total. Total the number of cells you counted. * Calculate the number of cells in each phase by dividing the number of cells in that phase by the total number of cells you counted.
A chair with lumbar support is the optimum arrangement, if this is not available, back cushions can be obtained - even a rolled up towel can offer some support. Your back should be firmly supported by the back rest. Adjust the seat so that you can fit 3 fingers between the front of your seat and the back of your legs When extending your arms to the keyboard, your wrists should be parallel with your elbow, this minimizes strain on the muscles of your arm. The top of your monitor should be level with your eyes, or just slightly below eye level. The monitor should be approximately 50 - 70cm (19" - 27") from your eyes.
Original Lab Sheet Include the original laboratory sheet with your lab report. Be sure that all sections are completed. This is the first page of the report after the cover. A. Purpose/Problem The Purpose section of the Lab Report, answers the following questions: • Why are you doing this lab? • What are you trying to accomplish by doing this lab?
Analysis The Center Board Hopper and Feeder consists of a blade with a shaped track along its upper edge. This blade undergoes a reciprocating motion in the vertical plane, being pushed into and out of a hopper populated with parts in a cyclic fashion. In its topmost position, the blade is in line with a chute. Thus, all the parts which enter into the blade during its upward motion, fall into the chute as it reaches the uppermost position. Vibratory bowl with a base along with a delivery chute tangential to the base causes the parts to move around and those with the correct orientation fall into the delivery chute.
Be sure to describe any necessary formulas and sample calculations. 2. Provide your program design for the problem you analyzed for calculating and displaying the area, perimeter, and diagonal (hypotenuse) length of a rectangle. Always work for modular design where possible. Be sure to use separate function for calculating the area; separate function for calculating the perimeter, and separate function for calculating the diagonal length of the rectangle.
For instance, if we wanted to achieve a mysterious atmosphere, we would use less light and try to create harsh contrasting shadows on the subject to make them hard to see, which therefore gives off a mysterious effect to the audience. In addition to this, we learnt to use 4 point lighting which is used to light up a set correctly. 4 point lighting consists of: * Key Light: the primary source of illumination * Fill Light: tries to fill in some shadows, used for contrast * Backlight: used to light the subject from the back, which is typically lighted from behind and over the head to light the hair and shoulders. * Background Light: illuminates the background, used to separate the subject from the background. Moreover there are two types of lights we were able to use, which were the Mizar’s and Red Heads.
When getting ready to dig a ball many aspects and principles of biomechanics are taken into account. Once the serve has been hit, you have to move your feet and body behind the ball. Whilst moving for the ball you have to take the projectile motion into account so that your feet are positioned correctly. You have to make sure that you knees are bent so your centre of gravity is bigger and lower to the ground. Most of your weight is on your toes so you’re ready to push forward when hitting the ball.
Blanca Mbuto 02/19/2012 Biochemistry Lab 4422 Cell Fractionation by Centrifugation Abstract This experiment was performed to investigate organelles, membranes, cellular components, and enzymes. Our concentration was to observe and determine if the chlorophyll contained broken chloroplasts or intact chloroplasts extracted from spinach leaves. A percoll density gradient was prepared followed by the separation of organelles. Chlorophyll was analyzed by using a spectrophotometer. We compared the absorbance readings of each tube and selected three (3) tubes to be analyzed.
Part II: Charles’s Law Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations you made during the lab. Make sure you note the data needs to be converted before graphing. Data Table | Temperature (°C) | Volume (mL) | 5 | 46 | 10 | 47 | 15 | 48 | 20 | 49 | 30 | 51 | 40 | 52 | Graph: Conclusion: Answer the following question regarding this part of the lab. Describe the relationship between volume and temperature, referring to your data and/or graph to support your answer.