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Biology
Biology

... Carrier proteins transport substances that fit within their binding site. A carrier protein binds to a specific substance on one side of the cell membrane. This binding causes the protein to change shape. As the protein’s shape changes, the substance is moved across the membrane and is released on t ...
Types of Passive Transport
Types of Passive Transport

... What is a Hypotonic solution? What happens to the cell in this solution? Hypotonic has less “stuff” in it than the cell. The cell gains water and swells (possibly pops or lyses) What is an Isotonic solution? What happens to the cell in this solution? Isotonic has the same amount of “stuff” as the ce ...
Duration: …………….. First Periodical exam (15 marks)
Duration: …………….. First Periodical exam (15 marks)

... ----------------------------------------------------------------------------------------------------12- Lysozyme is digestive enzyme that occurs naturally in tears and saliva ( T ). --------------------------------------------------------------------------------------------------13- Lipid A is the l ...
Cardiovascular System Notes
Cardiovascular System Notes

... This smooth surface enables blood to flow freely. -The middle layer consists mostly of muscle tissue. -The outer wall is made up of flexible connective tissue. ...
The cell and its environment
The cell and its environment

... Gatekeeper ...
Cell Week6
Cell Week6

... ppCO2 in the Cell ...
Unit 2 Biology Notes Cell Theory
Unit 2 Biology Notes Cell Theory

... Unit 2 Biology Notes Cell Parts Objective 3: Identify and explain the major functions of the following cell parts: Nucleus, Cell Membrane, Cell Wall, Chloroplast, Mitochondria, Ribosome, and Vacuole ...
Cell Structure and Function
Cell Structure and Function

... moving between cells. • Tight junctions between adjacent epithelial cells lining the digestive tract keep digestive enzymes and microorganisms in the intestine from seeping into the bloodstream. ...
THE BIRTH OF CELLS - University of Central Oklahoma
THE BIRTH OF CELLS - University of Central Oklahoma

... Medium ...
Honors Biology - LangdonBiology.org
Honors Biology - LangdonBiology.org

... solutions, water would flow into your cells, eventual causing them to lyse. 4. Describe what would happen if you put a fish evolved to live in fresh water into the ocean. The ocean water is hypertonic relative to the fish’s cells. Water would flow out of the fish, and the fish would dehydrate. It wo ...
Cell Review
Cell Review

... Plasma membrane  also called the cell membrane, this structure surrounds the cell to separate it from its external environment  composed of a phospholipid bilayer that has proteins embedded in it  cholesterol is also an important component of cell membranes since it keeps the membrane intact yet ...
Quarter 2 Assessment - Hicksville Public Schools
Quarter 2 Assessment - Hicksville Public Schools

... called the: ____________________________________________________ 7. Which is the main organ of the circulatory system that pumps blood through the body? __________________________________________________________ 8. The coiled tube about 20 feet long where nutrients are absorbed after digestion in th ...
Prokariotic and eukariotic cell structure
Prokariotic and eukariotic cell structure

... The smaller (70 S) type are all free in the cytoplasm, not attached to membranes (like RER). They are used in protein synthesis which is part of gene expression. Nucleoid: Is the region of the cytoplasm that contains DNA. It is not surrounded by a nuclear membrane. DNA is always a closed loop (i.e. ...
Chapter 3 Review
Chapter 3 Review

...  Tight junctions are the strongest intracellular connection.  They provide mechanical strength and block the passage of water and solutes between cells.  Mainly there found where extracellular fluid is different. i.e. digestive tract ...
Cells - Davis School District
Cells - Davis School District

... • Sending electrons through a cell allows us to see its smallest parts, even the parts inside the cell (Figure below). • Without electron microscopes, we would not know what the inside of a cell looked like. ...
Chapter 7 - Edublogs @ Macomb ISD
Chapter 7 - Edublogs @ Macomb ISD

... steady supply of nutrients to come into the cell no matter what the external conditions are. • Waste and other products also leave the cell through the PM ...
R 3.3
R 3.3

... • Proteins help molecules and ions cross the membrane and can act as receptors, proteins that detect a signal and respond by performing an action. • Carbohydrates help cells distinguish one cell type from another. The fluid mosaic model describes the characteristics and makeup of the cell membrane. ...
Lesson 4 Organisms Made of Cells
Lesson 4 Organisms Made of Cells

... Lesson Plan 4: Characteristics 1: Organisms are Made of Cells ...
Hajar Ashraf 12G – Virtual Pathology Lab
Hajar Ashraf 12G – Virtual Pathology Lab

... 5. Why are white blood cells in stained blood smears usually counted at low power under a microscope? Explain your answer. - WBCs are bigger than all other blood cells, so on low power, WBCs are visible while the other cells are much less visible. 6. Why is the presence of a larger than normal numbe ...
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... The  cafeteria  is  where  the  food  is   produced  so  that  each  and  every  person   can  get  energy.  This  is  similar  because   the  chloroplast  produces  food  from   energy  captured  from  the  sun  to   perform  photosy ...
Transporting Materials Across the Cell Membrane
Transporting Materials Across the Cell Membrane

... • Many substances can pass freely through the cell membrane, such as water, CO2 and O2 • Other substances are too large to fit through the pores and need help. Carrier proteins aid in moving large molecules from the outside to the inside of the cell. This is called… ...
Mr. Martin`s Chapter 30 PowerPoint
Mr. Martin`s Chapter 30 PowerPoint

... toward the stele through plasmodesmata 3. Most water, on the other hand, is carried between cells, through the cell walls 4. Therefore the endodermis and Casparian strip control the entry of water and solutes into the vascular cylinder (stele) *Because of root organization all water and solutes must ...
The Cell Theory
The Cell Theory

... Importance: This process drives the movement of many substances (such as food, __________, water and other materials) in and out of the cell through _________in the _____________________. If there are many __________ molecules outside the membrane, for example, some will _____________ through the __ ...
printer-friendly sample test questions
printer-friendly sample test questions

... one cell and multicellular organisms are composed of more than one cell. Both types of organisms carry on all the functions of life such as metabolism, growth and development, response to stimuli, and reproduction. However, multicellular organisms may contain specialized cells for increase efficienc ...
Study
Study

... Lipids are fats, waxes, and oils. They provide stored energy. Proteins are made up building blocks called amino acids. Proteins are used by the body for building, healing, and speeding chemical reactions. Two types of nucleic acids are DNA and RNA. They carry the instructions for all life activities ...
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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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