The purpose for completing this lab was to observe how microscopes function. The invention & evolution of the microscope has been an ongoing process since the Middle Ages, when the first convex magnifying lenses were introduced. In 1590, the Jansen Brothers invented the first compound microscope (two or more lenses).However, Antony van Leevenwenhoek created the first “true” microscope, in 1665, with 300x magnification & unbelievable resolution. During the late 1700’s, the microscope was reinvented with 1500x magnification. The most recent advancement in microscopes is the electron microscope, which was invented in 1930. This particular model uses an electron beam, instead of light & 4,000,000x magnifications with incredible resolution.
There are many different parts of a microscope and each one has its own unique purpose. The compound microscope has 13 main parts. The base & arm are used to carry the microscope. The lamp or mirror is the source of light, the body tube lets light through, & the diaphragm controls the amount of light. There are also three dif...
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- Culturing Bacteria Lab PURPOSE: To determine which location (the gym, the cafeteria, or the area near the parking lot door) within Middlefield Collegiate Institute will have the greatest number of bacteria. HYPOTHESIS: At Middlefield Collegiate Institute, the gym will have the most bacteria, the cafeteria will have the second most bacteria and the area near the front door will have the least bacteria. This is evident because the gym is a moist and warm environment which will make the gym a suitable place for bacteria to thrive.... [tags: Bacteria, Agar plate, Petri dish, Organism]
1165 words (3.3 pages)
- Introduction: On August 20, a lab was started doing different test involving blood. The objective of the experiment was to test white blood cells (WBC), red blood cells (RBC), platelet counts, differential of WBCs, a hematocrit, a hemoglobin analysis, and also various calculated indices. All the test will indicate if a person’s blood levels are normal or if the person has an abnormal blood count. To explain what blood is, blood is a red liquid that circulates throughout the body. It also transports oxygen rich blood throughout the body, takes nutrients from specific cells and waste to be expelled out of the body.... [tags: Red blood cell, Anemia, Hemoglobin]
1273 words (3.6 pages)
- UNKNOWN PROJECT LAB REPORT Christian Ramos Unknown-D8 Due: April 21st Prof. Berte MCB2010L Spring 2016 Introduction The term “microbiology” refers to the branch of study that deals with microorganisms. Microbiology is extremely important in today’s time for the crucial information that the study provides. Human’s have had a long and cruel history of disease and sickness, for example the bubonic plague, but microbiology gives scientists the ability to observe, study, and prevent sickness like the bubonic plague to ever happen again.... [tags: Bacteria, Microbiology, Gram staining, Staining]
1989 words (5.7 pages)
- Biology Lab Report Lab No. 18: Biochemical Genetics: Smooth Peas Wrinkled Peas Data Presentation: The diagram of cotyledon for smooth and wrinkled pea is attached to the next page. The table of starch presents is below: Type of Pea Starch Present. (Color change) Smooth Yes (Dark blue) Wrinkled No (No change) Conclusion Smooth pea is dominant than wrinkled one, hence we can say the letter of allele which controls this characteristics is S. ‘SS’ and ‘Ss’ for smooth, and ‘ss’ for wrinkled.... [tags: Papers]
515 words (1.5 pages)
- Maury Matos 1/14/02 AIM: Find out the mode of inheritance from crossing brown big eyed male and little eyed female, and to find out the fenotype and genotype of offspring. I took the F1 data and crossed it with another group to find the F2 data. Hypothesis: I think that the red eyes have dominant traits over brown eyes, and big eyes have dominant traits over little eyes. I got to this hypothesis because the F1 data proves that red big eyes are dominant because the offspring have big red eyes then the traits of red eyes and big eyes had to be homozygous dominant.... [tags: essays research papers]
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- Introduction The main purpose of accomplishing multiple tests on an unknown organism was to pick a random unknown tube and identify which microorganism it was. One of the important thing about these different tests are to make sure the tests are performed correctly and the results are interpreted correctly or else the unknown organism will come out as a mess. One instance where it is important to interpret the tests is in the medical field. If a patient is sick because of an unknown organism, samples from the patient can be taken out and the lab can perform tests on it and interpret the results correctly to identify the exact type of microorganism in order to cure the patient with antibioti... [tags: areogenes, oxidase, lab]
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- A Comparison of the Water Potential of Potato and Sweet Potato Tubers Aim The aim of this experiment is to compare the water potential of two different plant tissues, potato and sweet potato tubers, by measuring the gain or loss of water when samples of the tissue are placed in a range of concentrations of sucrose solutions. Background information Osmosis is the movement of water molecules from a region of their higher concentration to a region of their lower concentration through a semi permeably membrane.... [tags: Biology Lab Report]
1827 words (5.2 pages)
- Determining the Water Potential of a Potato Chip Aim: To determine the water potential of a potato chip Background knowledge What is water potential. Water potential is the measure of the tendency of water to move from one place to another. Like the movement of water from potato chip to surrounding solution or vice versa. Water always moves from an area of high water potential to a region of lower water potential. The addition of solutes decreases water potential making it more negative.... [tags: Biology Lab Report]
2630 words (7.5 pages)
- Water is a charged or polar molecule (H+ - O- - H+) that is always moving across cell membranes. Scientists theorize that this is possible because it is such a small molecule or because there are special gap or pores that allow water movement through the cell membrane. The predominant direction of water flow is determined by the concentration of the solutes (non-water molecules) inside and outside of the cell. Water molecules will show a new movement from an area of higher water concentration (& lower in solutes) to an area of lower water concentration (& higher in solutes).... [tags: Lab Report]
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- "Of all the inventions none there is Surpasses the noble Florentine’s Dioptrick Glasses For what a better, fitter guift Could bee in this World’s Aged Luciosity. To help our Blindnesses so as to devize a paire of new &Artificial eyes By whose augmenting power wee now see more than all world Has ever doun Before.” Henry Powers, 1664 The Beginnings Of the five senses, the most important is sight.It aids in the process of gathering information about the environment that we are part of.However, this visual gathering is adequate only to a certain point.... [tags: Microscope Science biology History Essays]
2872 words (8.2 pages)