Patterns in Nature 1. Organisms are made of cells that have similar structural characteristics * Outline the historical development of the cell theory‚ in particular the contributions of Robert Hooke and Robert Brown Robert Hooke was the first person to observe a cell through a compound microscope in 1665. Franscesco Redi used a microscope to observe that flies do not spontaneously appear but develop from eggs laid by other flies. Many years later‚ Robert Brown observed a large body in
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condition in which the eosinophil count in the peripheral blood exceeds 0.45×109/L | Blood Smear | Hematoxylin | http://www.nurs.org.jp/igaku/s4323 | 200x200 piels | | 7 | Fish Blastodisc Mitosis Section | Reproductive system | Egg | the embryo-forming portion of an egg with discoidal cleavage | Mitosis | Longitudinal Cross section | Giesma | http://www.carolina.com/images/enUS |
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Adenosine Triphosphate Adenosine triphosphate (ATP) is considered by biologists to be the energy currency of life. It is the high-energy molecule that stores the energy we need to do just about everything we do. It is present in the cytoplasm and nucleoplasm of every cell‚ and essentially all the physiological mechanisms that require energy for operation obtain it directly from the stored ATP. (Guyton) As food in the cells is gradually oxidized‚ the released energy is used to re-form the ATP so
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FEEDBACK COMPARISON REQUESTS WORDPRESS PLUGIN LOG IN Diffen Compare Anything ›› vs. Aerobic vs Anaerobic Respiration Aerobic RespirationAnaerobic Respiration Diffen › Science › Biology Cellular respiration is the set of the metabolic reactions and processes that take place in organisms’ cells to convert biochemical energy from nutrients into adenosine triphosphate (ATP)‚ and then release waste products. It is one of the key ways a cell gains useful energy. Comparison chart Embed this
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Chapter 5: Skeletal FIBROUS joints form soft spots on a baby’s head. The nose is formed mostly of bone. – FALSE (cartilage) An immature bone cell found growing bone – OSTEOBLAST. An epiphyseal plate of cartilage forms at either end of a long and is the future growth plate may grow longer. –TRUE The Tibia of the lower leg forms the “shin bone”. –TRUE Ligaments connect the bone to bone at places called joints. –TRUE The lungs and heart are protected by the ribs‚ sternum‚ and
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not when they are first visible); a description of the differences between what happens to HC and SC during mitosis and meiosis I and meiosis II (please do not diagram out each stage‚ just describe the 2-3 key differences between the events of mitosis and meiosis I & II that explain the different outcomes); and an explanation of how these differences relate to the different functions of mitosis and meiosis in the organism. A chromatin is DNA combined with proteins that is found in the nucleus of eukaryotic
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Topic 2: Cells 2.1 Cell Theory 2.1.1: Outline cell theory Living organisms are composed of cells Cells are the smallest unit of life Cells come from pre-existing cells 2.1.2: Discuss the evidence for cell theory Humans have not been able to find any living thing that is not made up of at least one cell Robert Hooke first described cells when looking at cork through a microscope Louis Pasteur´s experiments: he discovered that all cells must come fom pre-existing cells 2.1.3: State that
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Student Exploration: Cell Division Vocabulary: cell division‚ centriole‚ centromere‚ chromatid‚ chromatin‚ chromosome‚ cytokinesis‚ DNA‚ interphase‚ mitosis Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Cells reproduce by splitting in half‚ a process called cell division. What do cells need to do between divisions to make sure that they don’t just get smaller and smaller? The cell needs to go through a phase after cell division. 2. The genetic information of
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G2) * Cell will not proceed with mitosis if DNA replication is not complete * The way the cell senses this is not understood completely * This checkpoint involves signals that block the activation of M phase cyclin-cdk complex (MPF) by inhibiting the activity of cdc25 protein phosphatase. * Cells with mutations in this checkpoint pathway or cultured mammalian cells treated with caffeine will proceed through mitosis with unreplicated DNA. Spindle-attachment
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15. What specifies that amino acid sequence of a protein? 16. What is RNA? How are the 3 types different in function? 17. How are triplet codes‚ codons‚ and amino acids related? 18. What is the purpose of mitosis? 19. Briefly describe what happens in each phase of mitosis? 20. What is the purpose of meiosis? 21. Explain the relationship between gametes‚ zygote‚ blastocyst‚ embryo and fetus. 1. Connective Tissue gives shape to organs and holds them in place. Blood and
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