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Slide 1
Slide 1

... protoplasm. (draw a diagram if it will help you) 4. Why are vacuoles important to PLANTS? 5. Which organelle is the site of photosynthesis? 6. What are the three main ingredients for ...
PowerPoint Presentation - Chapter 12 The Cell Cycle
PowerPoint Presentation - Chapter 12 The Cell Cycle

... The M phase includes mitosis and cytokinesis. Interphase accounts for 90% of the cell cycle. During interphase, the cell grows by producing proteins and cytoplasmic organelles, copies its chromosomes, and prepares for cell division. Interphase has three subphases: the G1 phase (“first gap”), the S p ...
Cell Transport - Elmwood Park Memorial High School
Cell Transport - Elmwood Park Memorial High School

... • Hypertonic environment- water leaves cells making them shrivel. • Hypotonic- water diffuses into cells causing them to swell and eventually burst. • Cytolysis- bursting of cells. ...
document
document

... 7. The connective tissue which immediately surrounds a muscle is called _______________ and the connective tissue around the fascicles is called ________________. ...
Cell Structure
Cell Structure

... • The cell is the fundamental unit of life. All organisms, whatever their type or size, are composed of cells. The modern theory of cellular organisation states:– All living things are composed of cells and cell products. – New cells are formed only by the division of pre-existing cells – The cell c ...
Presentation
Presentation

... blots and cortical ERK blots because the saturation point for band intensities was 12.5μL › curve was very sensitive to fluctuations at ...
Document
Document

... d. All of the above _____ 5. How does a cell recognize only the signals meant for it? a. It has receptor proteins that respond to light and sound. b. It has receptor proteins in the cytoplasm that respond to touch. c. It has receptor proteins of specific shapes that certain molecules fit in. d. It h ...
Active - cloudfront.net
Active - cloudfront.net

... • Sodium-Potassium Pump-transports Na+ & K+ ions up their concentration gradients • Usually pumps potassium into the cell. • Conduction of nerve impulses. • ATP supplies the energy that drives the pump • Sodium Potassium Pump • Pump ...
The Cell Cycle and Development
The Cell Cycle and Development

... temperature conditions, cells divide more slowly, but differentiate after fewer divisions. It therefore appears that oligodendrocyte differentiation is controlled by a cellintrinsic timing mechanism; the possible molecular basis for such a mechanism is discussed.5 ...
The Cell Theory - North Allegheny
The Cell Theory - North Allegheny

... Cell Membrane 1. Active Transport – the movement of molecules through a cell membrane using energy 2. Passive Transport – the movement of molecules through a cell membrane without the expenditure of energy ...
1. The four primary tissue types are A. epithelial, cartilage, muscle
1. The four primary tissue types are A. epithelial, cartilage, muscle

... B. connective, epithelial, skin, and blood. C. epithelial, connective, muscle, and nerve. D. glands, bone, lungs, and kidney. E. bone, skin, blood, and muscle. 2. Which of the following pairs is mismatched? A. endoderm - bone B. mesoderm - muscle C. ectoderm - skin D. ectoderm - nervous system E. en ...
Quantifying cell-virus interactions using NanoTracker™ optical
Quantifying cell-virus interactions using NanoTracker™ optical

... tethers were pulled from the cell before the membranevirus interaction was ruptured [7, 8]. Figure 5 shows such a tether being pulled out from the membrane of a CHO cell. After an interaction time of two seconds, the virus-coated microsphere was retracted with a speed of 5 µm/s by moving the piezo s ...
cell wall
cell wall

... compound glucose. Chloroplasts provide the sugar (glucose) needed by mitochondria to create usable energy for the organism. Analogy: Chloroplasts are like farmers that grow food, which is later used by the chef (a mitochondrion). ...
Irregular Plurals in Biology/Zoology
Irregular Plurals in Biology/Zoology

... serous fluid between tissue cells thin membrane lining the heart cavities Internal membranes of cells; often abbreviated as ER layer of cells that lines the inside of certain body cavities coiled tube that stores sperm a thin layer of tightly packed cells lining internal cavities, covering exposed b ...
Questions for each cell structure
Questions for each cell structure

... What are the major filaments/ structures that make up the cytoskeleton? How are they arranged? What processes is the cytoskeleton involved in? Explain what happens when a cell has to change shape (cell division, endo/exocytosis)? What cells do you find a cytoskeleton in? Does it differ depending on ...
Genetics Lesson 03
Genetics Lesson 03

... • The process begins with a diploid (2n) cell called an oogonium. • Oogonia reproduce by mitosis before birth and begin meiosis, but stop at Prophase I. ...
Supplementary Materials
Supplementary Materials

... Diagnostics, Middleton, VA) and then washed with water. The invasive cells (those on the lower side of the membrane) were counted by microscopy at 20 magnification. Mean values were calculated from cell counts in five random fields for each filter. The assay was performed three times, and results f ...
Xylem and phloem form the vascular system of plants to
Xylem and phloem form the vascular system of plants to

... tracheids are dead at maturity. Tracheids have thick secondary cell walls and are tapered at the ends. It is the thick walls of the tracheids that provide support for the plant and allow it to achieve impressive heights. Tall plants have a selective advantage by being able to reach unfiltered sunlig ...
the structures and functions of a Euglena. Draw a Euglena. B
the structures and functions of a Euglena. Draw a Euglena. B

... Meiosis is a type of cell division that reduces the number of chromosomes in the cell by half to create sex cells for organisms that undergo sexual reproduction. There are two main stages, Meiosis I and Meiosis II. During these stages the chromosomes line up randomly and will separate into new cells ...
Looking Inside Cells
Looking Inside Cells

Localization of proteasomes in plant cells
Localization of proteasomes in plant cells

... Proteasomes from eukaryotes are cyli ndrical particles of 20-23 S, about 700 kDa, composed of a set of at least 15 proteins with molecular weights of 19- 35 kDa. Their proteolytic activities can be attributed to several catalytic components. Proteasomes associate with other proteins, which apparentl ...
Prokaryotic Cells
Prokaryotic Cells

... survive are the same for a single cell as they are for a more complex organism.  A single-celled organism has to conduct all life processes by itself.  A multi-cellular organism has groups of cells that specialize to perform specific functions. ...
Chapter 3 Notes File
Chapter 3 Notes File

... – Wall composed of inner and outer membranes separated by fluid – Thousands of particles make up enzyme molecules attached to both membranes – The “power plants” of cells • Mitochondrial enzymes catalyze series of oxidation reactions that provide about 95% of cell’s energy supply ...
Biology of the Cell
Biology of the Cell

... been actively growing, its cells dividing and then stretching and elongating as the blade lengthens. Did you ever wonder how the individual cells within the blade of grass know in what direction to grow? To answer this deceptively simple question, we will first need to provide answers to several oth ...
Study Guide: The Cell Cycle, Levels of Organization and DNA
Study Guide: The Cell Cycle, Levels of Organization and DNA

... What do you call the copy of a chromosome that lines up during mitosis? How are they attached?  When does duplication of the nucleus occur? (interphase, mitosis or cytokinesis?) LEVELS OF ORGANIZATION –  What are the basic units of all living things?  A group of several types of similar cells for ...
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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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