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Mitosis
Mitosis

... Bacteria DO NOT divide by mitosis because they don’t have a nucleus. Bacteria reproduce via binary fission ...
Cell Function – Cells and their Environment
Cell Function – Cells and their Environment

... Water moves into and out of cells because of the different concentrations of the solutes. Different kinds of cells react differently to osmosis, depending on the solution they are in: ...
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... The cell is the basic unit of organization of organisms All cells are similar in structure and function All cells come from preexisting cells ...
Ms. E.Russell`s 7th Grade Life Science Classes START DATE
Ms. E.Russell`s 7th Grade Life Science Classes START DATE

... --Cell membrane surrounds the cell and directs materials into and out of the cell. You will also need edible cytoplasm. --Cytoplasm is a jellylike material that fills the space inside the cell. Most cell parts float within the cytoplasm. In the center of the cytoplasm you will need to place a medium ...
Scale Model of a Cell (A)
Scale Model of a Cell (A)

... Cells come in many different shapes and sizes. Most are so small that they are measured in micrometers (µm) or microns. One micron is equal to one millionth of a meter or one thousandth of a millimeter. Because they are so small, you need a microscope to see most cells, so our scale models will be m ...
Injuries to the Tissues
Injuries to the Tissues

... Injuries to Muscle Tissue • Muscle Strain – overstretching or tearing of the muscle – Usually where the tendon meets the muscle ...
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CH 2.1 Cell Transportation PowerPoint

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Cell Division Assignment

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... “uncommitted” or “undetermined”. These cells become determined or committed, where they have decided their fate, but have not yet assumed it. Subsequently, cells differentiate to assume their final fate. Determination involves activation of a few regulatory genes, which control activation of many ef ...
School-Cell Analogy - Streetsboro City Schools
School-Cell Analogy - Streetsboro City Schools

... together to carry out different tasks & functions. They same thing happens with all of the organelles in the cell; they work together to carry out the task of the cell. Your job is to make a comparison of the parts of the cell to parts of the school in order to help you remember the roles of various ...
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Lab: Cells Under the Microscope - PHA Science
Lab: Cells Under the Microscope - PHA Science

... b) How are the structures of these two organelles similar, and how are they different? (We will consider their functions in much greater depth in later chapters.) _____________________________________________________________________________________ __________________________________________________ ...
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... membrane. A selectively permeable membrane is a membrane that some substances can pass through, while others cannot. • Many cell membranes have protein channels that let certain molecules cross the membranes. These protein channels facilitate, or help, the diffusion of the molecules across the membr ...
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... c. It will stay the same. b. It will shrink. d. It will wilt. 36. Algal cells are placed in an isotonic solution. Additional amounts of solutes are slowly added to the solution. What happens to the cells? a. They will begin to swell. c. They will stay the same. b. They will burst. d. They will shrin ...
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Unifying Themes in Biology Represent recurring patterns

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Structures outside the cell wall

... Replicated DNA condense into dark and dense bodies called chromosomes. Each chromosome is actually a pair of chromatids held together by a centromere. Then the centrioles separate from each other and move towards the poles of the cell. They then spin mitotic spindles as they move. These spindles wil ...
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... * During _______________, the centromeres split and the sister chromatids are pulled apart to opposite poles of the cell. D. Telophase: the fourth stage of mitosis. * During ________________, two distinct daughter cells are formed. The cells ...
tissues - PBworks
tissues - PBworks

... • Appear layered but really are a single layer (nucleus at diff locations) • Usually have cilia • MOVE DUST & MICROBES ...
Gas exchange in insects: trachea
Gas exchange in insects: trachea

... adequate rates of photosynthesis – they require CO2 from the air. • Stomata in the leaves are the main site for gas exchange in the plant – comprised or a stoma and two guard cells. • Each stoma (pore) is surrounded by two guard cells, that control whether the stoma is open or closed. • The shape of ...
Cell Division
Cell Division

... Cells divide for many reasons:  In order to stay small  Diffusion occurs at a faster, more efficient rate in smaller cells.  Why would diffusion rate matter in cells?  Remember what materials need to enter and exit the cell. ...
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Chapter Guide

... Introduction The study of cellular function is an extremely important aspect of biology. Since all organisms are comprised of cells, and we have defined the cell as the basic unit of life, we must understand the structure and function of the cell before proceeding into discussions of metabolism and ...
Multiple Choice
Multiple Choice

... 23. The cell’s internal supporting framework is called the cytoskeleton. 24. The plasma membrane can be described as a double layer of phospholipid molecules. 25. Rough endoplasmic reticulum looks rough because there are mitochondria attached to it. 26. Ribosomes are only found attached to endoplasm ...
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Organ-on-a-chip

An organ-on-a-chip (OC) is a multi-channel 3-D microfluidic cell culture chip that simulates the activities, mechanics and physiological response of entire organs and organ systems. It constitutes the subject matter of significant biomedical engineering research, more precisely in bio-MEMS. The convergence of labs-on-chips (LOCs) and cell biology has permitted the study of human physiology in an organ-specific context, introducing a novel model of in vitro multicellular human organisms. One day, they will perhaps abolish the need for animals in drug development and toxin testing.Although multiple publications claim to have translated organ functions onto this interface, the movement towards this microfluidic application is still in its infancy. Organs-on-chips will vary in design and approach between different researchers. As such, validation and optimization of these systems will likely be a long process. Organs that have been simulated by microfluidic devices include the heart, the lung, kidney, artery, bone, cartilage, skin and more.Nevertheless, building valid artificial organs requires not only a precise cellular manipulation, but a detailed understanding of the human body’s fundamental intricate response to any event. A common concern with organs-on-chips lies in the isolation of organs during testing. ""If you don’t use as close to the total physiological system that you can, you’re likely to run into troubles"" says William Haseltine, founder of Rockville, Maryland. Microfabrication, microelectronics and microfluidics offer the prospect of modeling sophisticated in vitro physiological responses under accurately simulated conditions.
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