EXPERIMENT 1: PREPARATION OF BIOLOGICAL MATERIALS FOR MICROSCOPIC EXAMINATION Introduction: Cell is the smallest structural and functional unit of an organism‚ and is often called the building blocks of life. All organisms are composed of one or more cells‚ they are classified into 2 groups which are unicellular organisms and multicellular organisms. Plants and animals are made up of cells too. There are two basic classes of cells‚ prokaryotic and eukaryotic cells. The structurally simpler‚ prokaryotic
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handed in later. 5. The drawing of the cell will need to have the organelles labeled as well as the function written out. Plant cell: ❑ Cell wall light green ❑ Cell membrane pink ❑ Golgi Apparatus orange ❑ Mitochondria yellow ❑ Chloroplast green ❑ Nucleus brown ❑ RER red ❑ Ribosome black ❑ Cytoplasm white ❑ Central vacuole
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The Central Dogma. This hypothesis was described by Crick in 1958. In 1953‚ Watson and Crick were the first to determine the true crystalline structure of DNA‚ using model building and then X-ray crystallography. Once the DNA structure was determined‚ the mechanisms behind inheritance‚ information flow‚ and gene function fell into place. Overall the flow of information is depicted as: DNA --> RNA --> protein. Both DNA and RNA can be replicated (i.e. DNA is synthesized from DNA‚ and RNA from RNA)
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not bound with a nucleus. In the eukaryotes‚ DNA is organized into chromosomes‚ which is surrounded by a membrane. According to Dr Lynn Margulis (2005)‚ she states that the origins of mitochondria and chloroplasts which are organelles of eukaryotic cells. This means that the mitochondria and chloroplasts were prokaryotic cells‚ which entered the eukaryotic cells and co-existed through endosymbiosis. There are many organelles inside a eukaryote cell‚ each performing dedicated functions. For example
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Observing the Characteristics of Life In this activity‚ you’ll identify some observable characteristics (some not) of life in videos of various organisms and describe those characteristics. Review Remember that ALL living organisms are made up of CELLS! What are seven characteristics of living things? 1. Movement 2. Reproduction 3. Sensitivity 4. Growth 5. Respiration 6. Nutrients 7. Excretion If your teacher is displaying the
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Transport Chain for the production of ATP and NADPH Glucose: ATP from the Light Reactions are used‚ with the addition of hydrogen ions to CO2 to make glucose. Narrator: Narrates the play Thylakoid: interconnected sacs and membranes within the chloroplast that contain enzymes
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The cell is one of the most basic units of life. There are millions of different types of cells. There are cells that are organisms onto themselves‚ such as microscopic amoeba and bacteria cells. And there are cells that only function when part of a larger organism‚ such as the cells that make up your body. The cell is the smallest unit of life in our bodies. In the body‚ there are brain cells‚ skin cells‚ liver cells‚ stomach cells‚ and the list goes on. All of these cells have unique functions
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The respiration and photosynthesis cycle is the process by which plants and animals interact in a codependent and symbiotic manner to produce the nutrients‚ gases‚ and energy that they require to survive. Plants obtain energy from sunlight and use it to combine carbon dioxide and water into glucose and oxygen. This process is called photosynthesis. Animals eat plants containing glucose‚ and combine glucose and oxygen‚ releasing energy‚ water‚ and carbon dioxide. This process is called respiration
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Botany Exercise 1 – Microscopy A. The Compound Microscope microscope – 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 image base coarse adjustment knob fine adjustment knob revolving nosepiece objective lenses stage stage clips stage opening condenser iris diaphragm mirror U-shaped platform that supports
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Lysosome | Membrane-bound organelles that contain enzymes. | | Centriole | Cylinder-shaped organelles mad of short microtubules arranged in a circle. | | Cell Wall | A rigid layer that gives protection‚ support‚ and shape to the cell. | | Chloroplast | Organelles that carry
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