PPT-CELLS Introduction to Cells

Cells are Basic to Life The human body is composed of trillions of cells There are about 200 different types of cells Each cell turns raw materials from food you eat and air you breathe into molecules the body needs. Hydrogenpowered fuel cells are not only pollutionfree but also can have more than two times the e57375ciency of traditional combustion technologies WLRQ5735957347KGURJHQ57347JDV5734757536RZV57347WKURXJK57347FKDQ WKH57347FDWKRGH57361573477KLV57347575 1 INTRODUCTION NC m achines advantages of NC machines Types of NC systems Controlled axes Basic Components of NC Machines Problems with Conventional NC and Principles f NC Machines are described in this Unit Objectives After studying this unit you sh S. 2. , & volume is . S. 3. , where . S. = length of the side of the cube.) Which of the following cube-shaped cells would be most efficient in removing waste by diffusion?. Cells (Test . 1). 5. . Cells in animals and plants have unique forms that allow each to take part in processes that are necessary for the cell and or/living thing to survive.. Cells. What is an organelle?. Organelles are to cells what organs are to the body. . homeostasis. . Cells have different functions.. Homeostasis = stable environment in your body; balance. Your body maintains its homeostasis even if outside conditions are changing. . Levels of Organization. Lack a nucleus. DNA is naked, a single loop not bound in a chromosome. May contain plasmids (small circular fragments of DNA). Have ribosomes, but no other organelles.. DNA present as a long circular molecule.. Cells Homeostasis Cells work together to maintain homeostasis . Cells have different functions. Homeostasis = stable environment in your body; balance Your body maintains its homeostasis even if outside conditions are changing. some beneficial. some potentially disease causing. immune system . – not an organ system, but a population of cells that inhabit all of our organs and defend the body from agents of disease. especially concentrated in the true organ system – . 2 minutes 6. a. 10 µl of 2X PCR mix (contains Taq polymerase, dNTPs, & buffer) b. 1 uL of each 10 mM primer (LuxA F and LuxA R) c. Template d. Water to a final volume of 20 µl For the writeup for oligodendrocytes. in the active areas of a chronic active MS lesion. . Staining for IFN-a (b, e, h, k, in green) and in a for B cells (CD19), in d: T cells (CD3) and in g: astrocytes (GFAP) and in j: . Lecturer . Dr. Samah A. Jassam BSc MSc PhD . MRSB. Al-Mustansiriya University . Collage of Pharmacy. Two . major types of stem cells in . mammals:. 1- . Embryonic . stem cells. , that are isolated from the inner cell mass of . humoral. response to infections, including B cell proliferation, class-switching, and increased antibody production. Th2 cells are characterized by the expression of the . transcription . factor GATA3 and produce cytokines: IL-4, IL-5, IL-6, IL-10, and IL-13. Th2 cells are associated with several inflammatory conditions, including allergy and asthma.. Natural . killer (NK) cells are large granular lymphocytes that, like CTLs, use cytoplasmic granules containing . perforins. to kill target cells. NK cells . were defined . initially by their ability to lyse certain tumor cell lines and virally infected cells in vitro. In contrast to T cells, NK cells can lyse these cells without prior immunization, and so mediate a form of innate (or natural) immunity that is termed . Overview. Cells . are the basic units of structure and function in living things. . What does cell structure mean? . What it is made of and how its parts are put together.. What does cell function mean? .