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... Diffusion — particles tend to move from an area where they are more concentrated to an area less concentrated. — In cells substances can diffuse across membranes WITHOUT requiring use of energy — passive transport Osmosis — diffusion of water across a selectively permeable membrane — enables cell me ...
The Cell Study Guide KEY
The Cell Study Guide KEY

... the prokaryote if their ribosomes were not functioning? The prokaryote would be unable to maintain and repair its cellular structures. 19. Viruses are currently considered non-living. Why? Viruses are considered non-living at this time due to their inability to reproduce and metabolize on their own ...
Cells
Cells

... Simple cuboidal epithethial cells line the ducts of certain human exocrine glands. Various materials are transported into and out of the cell by diffusion. What would be the volume of the larger cell in um3? SA Formula: 6 x S2 Volume: S3 S = length of side ...
Lab 1 Organelles
Lab 1 Organelles

... Specimen is coated with a very thin film of heavy metal Uses a beam of electrons instead of light Generates a detailed 3-D surface image of organelle structure ...
PLANT CELLS and TISSUES
PLANT CELLS and TISSUES

...  Adds strength but flexible  Supports young organs (leaves, stem, and roots)  Sclerenchyma  Elongated cells in secondary cell wall  Thickest, most rigid cell walls  DEAD  Conducts, supports, and protects ...
All Cells Have…….
All Cells Have…….

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LAB: Prokaryotes and Eukaryotes: bacteria (cyanobacteria), and
LAB: Prokaryotes and Eukaryotes: bacteria (cyanobacteria), and

... to all sketches. This is the BEST way to remember and understand all of this, and do well on lab practical exams. This lab is designed to help you better understand the differences between eukaryotic and prokaryotic cells, with a focus on cyanobacteria and plant cells. You will become familiar with ...
PHOTOSYNTHESIS CELLULAR RESPIRATION Process by which a
PHOTOSYNTHESIS CELLULAR RESPIRATION Process by which a

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The Nervous system

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Plant Cell Animal Cell

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Virtual Cell Tour Assignment

... Go to http://personal.tmlp.com/Jimr57/textbook/chapter3/chapter3.htm Scroll down to the table of contents and click on the structure you want. In this activity we are concerned with three main structures: the cell membrane, the nucleus, and the cytoplasm. 1. The Cell Membrane ...
30.1 Organization of the Human Body
30.1 Organization of the Human Body

... A group of organs that performs closely related functions is called an organ system. ...
Ground Tissue
Ground Tissue

... (CO2) to enter the leaf for the photosynthesis and close to prevent water loss due to evaportranspiration. ...
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... (CO2) to enter the leaf for the photosynthesis and close to prevent water loss due to evaportranspiration. ...
The Endomembrane System
The Endomembrane System

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GED SCIENCE LESSON 1
GED SCIENCE LESSON 1

... membrane, all cells contain a gel-like substance known as cytoplasm that fills the interior of the cell. Cells may exist by themselves and live independently (unicellular) or they maybe part of a larger multicellular organism such as yourself. Scientists recognize two basic types of cells based on t ...
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Cells are the basic units of life

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... activity related to cell volume and surface area  Volume increases faster than surface area  The speed and amount of “stuff” (waste & nutrients) across a cell membrane is determined by the surface area  Larger cell volume needs more nutrients and produces more waste  Eventually the cell becomes ...
THE HUMAN BODY
THE HUMAN BODY

... Our Amazing Body • Human body is like a machine, in that each part of the body has it’s own job. • These parts work together to keep the body alive, much like the parts of an automobile work to make it run. • There are different systems that make up the human body, let’s explore! ...
Chapter 4 Prokaryotic vs Eukaryotic
Chapter 4 Prokaryotic vs Eukaryotic

... considerably simpler than eukaryotic cells, they still possess many complex structures, such as peptidoglycan layers and endospores that are not found in any other living organism. However, when prokaryotic and eukaryotic cells are compared, similarities can also be found. For example, the cell memb ...
Unit 4 Cells Review Answer Key
Unit 4 Cells Review Answer Key

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Levels of Organization - Ms. Stanford`s Science Page 2016
Levels of Organization - Ms. Stanford`s Science Page 2016

... of the body. Each part has a job to do and as each part does its special job, it works in harmony with all the other parts. The arrangement of specialized parts within a living thing is sometimes referred to as levels of organization. Cells are the first level of organization. Cells are the smallest ...
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A1986A161900001

... In this way, plant cells could be studied at flux equilibrium or in the transition to equilibrium, which was a great advantage over earlier approaches based on net ion uptake alone. A valuable development in another area at that time was the measurement of cell electrical potential differences in hi ...
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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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