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Standard Area - MST:
Math, Science & Technology
  • Standard - MST4: Students will understand and apply scientific concepts, principles, and theories pertaining to the physical setting and living environment and recognize the historical development of ideas in science.
  • Key Idea Code - MST4.LE:
  • Key Idea - MST4.LE1: Living things are both similar to and different from each other and from nonliving things.
  • Academic Level - MST4.C.LE1:
  • Performance Indicator - MST4.C.LE1B: Students describe and explain the structures and functions of the human body at different organizational levels (e.g., systems, tissues, cells, organelles).
  • Major Understandings - 1.2a : Important levels of organization for structure and function include organelles, cells, tissues, organs, organ systems, and whole organisms.

  • Major Understandings - 1.2b : Humans are complex organisms. They require multiple systems for digestion, respiration, reproduction, circulation, excretion, movement, coordination, and immunity. The systems interact to perform the life functions.

  • Major Understandings - 1.2c : The components of the human body, from organ systems to cell organelles, interact to maintain a balanced internal environment. To successfully accomplish this, organisms possess a diversity of control mechanisms that detect deviations and make corrective actions.

  • Major Understandings - 1.2d : If there is a disruption in any human system, there may be a corresponding imbalance in homeostasis.

  • Major Understandings - 1.2e : The organs and systems of the body help to provide all the cells with their basic needs. The cells of the body are of different kinds and are grouped in ways that enhance how they function together.

  • Major Understandings - 1.2f : Cells have particular structures that perform specific jobs. These structures perform the actual work of the cell. Just as systems are coordinated and work together, cell parts must also be coordinated and work together.

  • Major Understandings - 1.2g : Each cell is covered by a membrane that performs a number of important functions for the cell. These include: separation from its outside environment, controlling which molecules enter and leave the cell, and recognition of chemical signals. The processes of diffusion and active transport are important in the movement of materials in and out of cells.

  • Major Understandings - 1.2h : Many organic and inorganic substances dissolved in cells allow necessary chemical reactions to take place in order to maintain life. Large organic food molecules such as proteins and starches must initially be broken down (digested to amino acids and simple sugars respectively), in order to enter cells. Once nutrients enter a cell, the cell will use them as building blocks in the synthesis of compounds necessary for life.

  • Major Understandings - 1.2i : Inside the cell a variety of specialized structures, formed from many different molecules, carry out the transport of materials (cytoplasm), extraction of energy from nutrients (mitochondria), protein building (ribosomes), waste disposal (cell membrane), storage (vacuole), and information storage (nucleus).

  • Major Understandings - 1.2j : Receptor molecules play an important role in the interactions between cells. Two primary agents of cellular communication are hormones and chemicals produced by nerve cells. If nerve or hormone signals are blocked, cellular communication is disrupted and the organism's stability is affected.
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