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Biology
Biology

... 9.3.1.1 Components of Blood and their Functions 9.3.1.2 Blood Groups and Blood Transfusion 9.3.1.3 Disorders of Blood (Leukemia and Thalassemia) ...
Cells Investigating cells 1- State what are the basic units of all living
Cells Investigating cells 1- State what are the basic units of all living

... A substrate is chemically altered into a product A catalyst is a substance which speeds up the rate of a chemical reaction without being changed or used up. (i.e. a catalyst is neither a substrate nor a product as it is unaffected by chemical reactions). A large number of chemical reactions take pla ...
A Tour of the Cell
A Tour of the Cell

... up of two membranes. The space between the two membranes is the intermembrane space, while the second membrane contains the mitochondrial matrix. ...
Smooth endoplasmic reticulum
Smooth endoplasmic reticulum

... vesicles found in eukaryotic cells. Its main function is to operate as a transport system. It consists of lipid bi-layers which contain embedded proteins. This system of membrane is continuous with the double membrane that surrounds the cells' nucleus . The ER is often makes up more than 10% of cell ...
Cell Lab
Cell Lab

... 4. Place one drop of Iodine on the onion cells and allow the cells to absorb the stain for at least one minute. Caution: Iodine is a stain! If you get it on you, it will stain. If you get it on your clothes, it will stain. 5. Place a cover slip over the cells and remove any excess iodine with a chem ...
• Replication: reproduction • Function: catalytic functions • RNA
• Replication: reproduction • Function: catalytic functions • RNA

Team Publications
Team Publications

... Sibarita, Michel Bornens (2002 Dec 11) ...
Chapter 11 Vocabulary
Chapter 11 Vocabulary

... Lysosomes ...
Cell Basics
Cell Basics

...  How single-celled organisms move  Thread-like projections out of cell (microtubules filled with cytoplasm)  Basically the same thing, only difference is the amount o Cilia - Lots of little threads, wave-like motion ...
Chapter 7 Notes
Chapter 7 Notes

... together for a specific function are called tissues. Organs are groups of different tissues that work together. Organs work together and form specific systems. An organism is an entire living thing that carries out all of the basic life functions and is made of organ systems. The levels of organizat ...
Unit 5 review sheet
Unit 5 review sheet

...  In the development of most multicellular organisms, a single cell (fertilized egg) gives rise to many different types of cells, each with a different structure and function. ○ All cells in an organism have the same DNA ○ As cell division proceeds, the cells not only increase in number but differen ...
Notes - Diffusion and the Cell Membrane
Notes - Diffusion and the Cell Membrane

... must be pushed against the concentration ______________ _____________ from a lower gradient to a ____________ higher concentration, _________ energy must be used with special protein channels that pump “__________” the calcium ions into a cell. ...
Cell Brochure Project - delaniereavis-bey
Cell Brochure Project - delaniereavis-bey

... • YOU MAY INCLUDE MORE THAN ONE RIDE OR ATTRACTION ON A PAGE. • PAGE 5 IS THE CENTER BACK PAGE. THIS PAGE WILL BE THE SUMMARY OF YOUR AMUSEMENT PARK/ROADSIDE ATTRACTION. YOU WILL EXPLAIN WHY CUSTOMERS SHOULD COME, OR VISIT AGAIN. ...
Exploring a Plant Cell
Exploring a Plant Cell

... Viewing cells under a light microscope allows a scientist to some, but not all of the different cell parts. Larger structures, such as the nucleus, cell wall, and cell membrane can be seen when viewing a properly stained eukaryotic cell. Most prokaryotic cells are too small to view any cell parts wi ...
Exploring a Plant Cell:
Exploring a Plant Cell:

... Viewing cells under a light microscope allows a scientist to some, but not all of the different cell parts. Larger structures, such as the nucleus, cell wall, and cell membrane can be seen when viewing a properly stained eukaryotic cell. Most prokaryotic cells are too small to view any cell parts wi ...
Mid Term Review
Mid Term Review

... nucleotides – either DNA or RNA ...
Unit III Organs and Organ Systems
Unit III Organs and Organ Systems

... • Muscle tissue provides all animals with the ability to move around independently. • Muscle cells can contract or shorten due to the interaction of two proteins, actin and myosin. • There are three types of muscle tissue, skeletal, cardiac, and smooth which produce movement in vertebrates. ...
Cells - Jocha
Cells - Jocha

... All organisms are composed of one or more cells, and the life processes of metabolism and heredity occur within these cells. Cells are the smallest living things, the basic units of organization of all organisms. Cells arise only by division of a previously existing cell. ...
What Makes Up A Living Thing
What Makes Up A Living Thing

... Mitochondrion Small double-membrane organelle; called the power plant of the cell because it converts energy from food to energy the cell can use through the process of cellular respiration Nucleus Directs all the cell’s activities; contains genetic material called DNA ...
HMH 3.1 Notes
HMH 3.1 Notes

... Fig. Leeuwenhoek observed and drew microscopic life, which he called animalcules, in pond water ...
Cell Summary
Cell Summary

... facilitate, or help, the diffusion of the molecules across the membrane. This process is called facilitated diffusion. It does not require the cell to use energy. Active transport requires energy. Active transport occurs when cells move materials from one side of a membrane to the other side against ...
Slide 1
Slide 1

... 2) Vacuole > pumps excess water out of the cell. 3) Plant cells = central vacuole support heavy structures such as leaves and flowers ...
Cells Powerpoint
Cells Powerpoint

... An artist’s conception of the cytoplasm - the region of a cell that’s not in the nucleus or within an organelle. ...
Name - Humble ISD
Name - Humble ISD

... 1. Double phospholipid bilayer; surrounds and protects DNA 2. Membranous network; site of protein processing and transport 3. Membrane surrounding central vacuole in plant cells 4. Sacs filled with hydrolytic enzymes; only found in animal cells 5. Selectively-permeable membrane found in all cells 6. ...
Structure and Function of the Cell
Structure and Function of the Cell

...  Most are roughly cuboidal or spherical  Some change shape (white blood cells) ...
< 1 ... 639 640 641 642 643 644 645 646 647 ... 951 >

Extracellular matrix



In biology, the extracellular matrix (ECM) is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells. Because multicellularity evolved independently in different multicellular lineages, the composition of ECM varies between multicellular structures; however, cell adhesion, cell-to-cell communication and differentiation are common functions of the ECM.The animal extracellular matrix includes the interstitial matrix and the basement membrane. Interstitial matrix is present between various animal cells (i.e., in the intercellular spaces). Gels of polysaccharides and fibrous proteins fill the interstitial space and act as a compression buffer against the stress placed on the ECM. Basement membranes are sheet-like depositions of ECM on which various epithelial cells rest.The plant ECM includes cell wall components, like cellulose, in addition to more complex signaling molecules. Some single-celled organisms adopt multicelluar biofilms in which the cells are embedded in an ECM composed primarily of extracellular polymeric substances (EPS).
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