shapes. They can appear as short‚ bent rods or as long‚ rigid spirals. “Filaments are colorless‚ long‚ multicellular threads‚ (with or without cross walls). Some have slow gliding locomotion. (Rainis 43) When looking at a bacterial sample under a microscope‚ the experimenter has to stain the bacteria first. The stain serves to define the bacterial cells. All bacteria are either gram negative or gram positive. To stain a sample first the scientist has to “set” the sample. Setting the sample is the basis
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violet and an octopus‚ they are all built in essentially the same way. The most basic similarity is that all living things are composed of one or more cells. This is known as the Cell Theory. • our knowledge of cells is built on work done with microscopes • English scientist Robert Hooke in 1665 first described cells from his observations of cork slices. Hooke first used the word “cell”. • Dutch amateur scientist Antonie van Leeuwenhoek discovered microscopic animals in water • German scientists
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this time shaped society and put it to where people would recognize it today. These inventions still play a big part of what we do today. From everyday commodities such as the toliet‚ to very important inventions including gunpowder and even the microscope. The Renaissance was an important time for new inventions and new technology.
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Practical 1: Observation of mitosis in garlic root tips Introduction The practical will involve the preparation‚ observation‚ and classification‚ of the various stages of mitosis by observing garlic root tips using a microscope. The study comes under the heading of cytogenetics which is the visual characterisation of genetic material and the study of how that material reacts during the life of the cell. Strictly speaking‚ mitosis is the division of the nucleus into two daughter nuclei that are
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organelles. In this lab‚ animal and plant cells will be compared through a microscope to identify differences in the structures of each type of cell. Almost all cells are too small to be seen through human eyes. Therefore‚ a microscope was used in the lab and a sample of a plant cell was placed on. The microscope was then adjusted and viewed on highest power. A picture of the image of the cell seen through the microscope was recorded as data. The same process was repeated using an animal cell instead
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FW) Light microscopy Microscopic image of D. carota suspension cells was visualized with an Olympus BX 51 light microscope (Olympus‚ Japan) and image were captured with an imaging software Progres C5 (Germany). To examine the anthocyanin content in the suspension culture from control and treated cells (with ABA‚ 50 µM) were collected on day 9 and directly observed under the microscope. Statistical analysis The data presented in the results are the means of three replicates with the standard deviation
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Objectives: To study the effects of hypotonic‚ hypertonic and isotonic solutions on plant and animal cells. Materials and Apparatus: * Microscope * Electronic balance * Stirring rod * Small knife * Glass slide and cover * 250‚ 500 ml beakers * Distilled water * Cotton * Test tubes * Spatula * Onion * Ethanol (70%) * Filter paper * Table sugar (sucrose) * Table salt (NaCl) * Potato EXPERIMENT 1 PART 1 Procedure: 1. The epidermal
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Survival rate control Two days after the test has started‚ and then after 5‚ 7‚ 9‚ and 12 days‚ the juvenile clams are observed under the microscope to verify the survival rate and to replace the medium and the food supplement. Number of live organisms is counted in each test container. After observation under the microscope and slight mechanical stimulation (e.g. touching the juveniles with a glass Pasteur pipette) organisms that do not show some movement for about 10 seconds should
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Title- Protista Lab Concept- the concept of this lab was to explore what is in the pond water as living organisms and try to identify what it is. Some types of Protista are multi-cellular like giant kelp. Although they look much like plants‚ multi-cellular protists lack specialized tissues. Being eukaryotes‚ they have a membrane-bound true nucleus with linear chromosomes‚ and they have membrane-bound organelles. The kingdom Protista contains all eukaryotes that are not plants‚ animals‚ or fungi
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is the study of the relationship between body parts‚ and physiology is the study of the body as a whole. Then there is Microscopic to macroscopic word "microscopic" describes something that is so small that it can only be seen with the aid of a microscope‚ macroscopic" refers either to something that can be seen with the naked eye or‚ something that is large or in scale. The 6th out of seven Body systems are the organs‚ nerves‚ tissues circulatory etc. the last is Medical specialties. Medical specialties
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