• Biology
    diagrams below). This process is carried out by the plant, which controls the opening and closing of stomata via the guard cells. The more stomata a leaf contains the greater the rate of gas exchange and the less water it will be able to accumulate. Stomatal pores are formed between pairs of specialised...
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  • Home
    USING A LIGHT MICROSCOPE Background: Microscopes are very important tools in biology. The term microscope can be translated as “to view the tiny,” because microscopes are used to study things that are too small to be easily observed by other methods. The type of microscope that we will be using...
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  • Biol Mc
    only C. (2) and (3) only D. (1), (2) and (3) 6. Which of the following cells possess chloroplasts ? 1) a guard cell 2) a leaf mesophyll cell 3) an onion epidermal cell A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and...
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  • Effect of Environmental Moisture Levels on Stomata Density in Privet Hedges
    density indicates higher amounts of carbon dioxide. In other words, stomata density is determined by the conditions that the plant experiences while the leaf is developing. During photosynthesis, stomata take in carbon dioxide (CO2) and release oxygen (O2) and some water (H2O) vapor. During respiration...
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  • Biology 11 Review
    Botany Exercise 1 – Microscopy A. The Compound Microscopemicroscope – optical instrument consisting of a system of specially ground lenses that gives sharp, distinct, and highly magnified images of minute objects.  compound microscope will be used. o two lenses: eyepiece + objective lenses o inverted...
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  • Biology
    the water a plant absorbs is not used for a plant’s daily functioning. It is instead lost through transpiration, the evaporation of water through the leaf surface and stomata, and through guttation, which is the loss of water from the vascular tissues in the margins of leaves. There are three levels...
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  • Aedrichness and Abundance of Insects
    and abundance of arthropod species living in eucalypt forest leaf litter and rainforest leaf litter. It was predicted that the rainforest leaf litter would have more richness and abundance of species than the eucalypt forest leaf litter. Leaf litter samples taken from the rainforest of Mt Nebo and the...
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  • Ahmad Shash Idil Patterns in Nature Biology Notes
    Leonardo da Vinci used glass lens to study small objects ▪ 1600 - The first compound microscope was made by Hans and Zacharias Janssen ▪ 1665 - ROBERT HOOKE observed cork cells using a compound microscope and described ‘little boxes or cells distinct from one another’ ▪ 1676 - Anton von...
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  • the report of wanting entry into this website
    1485 - Leonardo da Vinci used glass lens to study small objects 1600 - The first compound microscope was made by Hans and Zacharias Janssen 1665 - ROBERT HOOKE observed cork cells using a compound microscope and described ‘little boxes or cells distinct from one another’ 1676 - Anton von Leeuwenhoek...
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  • The Onion Cell Lab
    The Onion Cell Lab Background: Onion tissue provides excellent cells to study under the microscope. The main cell structures are easy to see when viewed with the microscope at medium power. For example, you will observe a large circular nucleus in each cell, which contains the genetic material for the...
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  • Lab Report - Plant and Animal Tissues
    Materials: Plant Tissues · Laboratory knife · Distilled water · Microscope · Slide of the longitudinal section of the root tip of Zea mays · Leaf of Rhoeo spathacea · Slide of a cross section of the leaf of Ixora sp. · Cross section of the stem of Cucurbita sp. · Cross section...
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  • homework
    epidermis will peel from some leaves quite readily. First cut the leaf. Use your fingernails to catch hold of and peel off the epidermis, or use a sharp razor blade to peel off the epidermis. Mount the peel in a drop of water on a microscope slide with a coverslip. Alternatively, make an epidermal impression...
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  • Plant Cell
    cytoplasm and subcellular organelles and they are enclosed in a membrane that defines their boundaries. In the Hydrilla leaf, observed under the microscope, Cells were so distinct that the outline and the rectangular shape of the cells were clearly seen. Individual cell Middle lamella ...
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  • What Causes Dcip to Lose It's Color?
    The third experiment will test influence of the mixtures exposed to light versus no light on the photosynthetic success of sucrose and ethanol spinach leaf mixtures. If the sucrose and ethanol spinach mixtures are combined with DCIP solution, then the solutions exposed to no light will have a lighter/colorless...
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  • xylem bio
    by root hairs  moves through the cortex into xylem (small xylem vessels) in vascular tissue  (transported throughout plant) into mesophyll cells in leaf Water absorbed by root hairs (via osmosis & root pressure)  Move through cortex into xylem (small xylem vessels) via symplastic loading (movement...
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  • Bio Lab
    & Carter 2011). In this first experiment my hypothesis was that we would see molecules moving, but only with the flow or direction of the water under the cover slip. The next experiment is to better our understanding of diffusion through a selectively permeable membrane. In this experiment we investigated...
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  • Mr.Mahmoud
    adult size Organisms are just living things: All living things are made up of tiny building blocks known as cells. These can be seen through a microscope but it helps if you stain them first. There are two types of cell you need to know about: animal and plant cells Animal and Plant cells: Cells...
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  • Report
    The Effect That The Density of Leaf Litter Has on Biodiversity Abstract The experiment tested the effects of different amounts of leaf litter on the number of organisms living in an ecosystem. The hypothesis was: if there is more leaf litter, then there will be more...
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  • wet mount
    Preparing a Wet Mount Aim: To prepare a wet mount for viewing using the light microscope. Materials: Light microscope, onion, cheek cells, toothpick, iodine, cover slip, slides, scalpel (knife), and petri dish Risk Assessment: Substance of Risk Nature of Hazard Safety Precaution ...
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  • Experiments 2
    pH and water 1 Drawing white and red blood cells 2 Structure of xylem and phloem 3 Mammalian kidney 3 The epidermis layer of a leaf 4 Chapter 2 – The Blueprint of Life 4 Natural selection model 4 Modelling meosis 5 Environmental effects on Phenotype 6 Modelling...
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