• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Cell Structure and Function
Cell Structure and Function

... Identify the major cell organelles. List the major functions of the organelles. Predict how changes in organelle/cell structure could alter cellular function . Explain how overall cellular function is dependent upon organelles/cell structure. Relate cell structure to every day contexts. ...
CHAPTER SUMMARY
CHAPTER SUMMARY

... 2. List the three main cell structures. 3. Describe the location, molecular structure, and width of the plasma membrane. 4. Explain the communication function of the plasma membrane, its transportation function, and its identification function. 5. Briefly describe the structure and function of the f ...
notes cellular transport power point presentation
notes cellular transport power point presentation

... What if the HIGH and LOW places are on different sides of a cell membrane? Molecules will still go from HIGH to LOW if the cell membrane will let them through! ...
Unit 2 _Cells_ Plan
Unit 2 _Cells_ Plan

... requirements to qualify as a living cell.  Cellular organelles divide the cell’s labor of making proteins.  Some items can move directly through the cell membrane, others require the help of proteins and/or energy.  The structure of the cell membrane makes it selectively permeable.  Organisms be ...
3.2 Cell Organelles
3.2 Cell Organelles

... However, experiments have shown that animal cells can divide even if the centrioles are removed, making their role questionable. In addition, although centrioles are found in some algae, they are not found in plants. Centrioles also organize microtubules to form cilia and flagella. Cilia look like ...
water
water

... •Bacteria and plants have cell walls that prevent them from over-expanding. In plants the pressure exerted on the cell wall is called tugor pressure. •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fis ...
Biology Hoonors Cell Structure and Function Quiz
Biology Hoonors Cell Structure and Function Quiz

... 8. Cell membranes are made up of (cellulose / phospholipids). 9. The (cell wall / cell membrane) regulates what enters and exits the cell. 10. The (mitochondria / lysosomes) release energy from glucose. 11. Without ribosomes, a cell would not be able to produce (proteins / carbohydrates). 12. Cells ...
Chapter 19: Protists and Fungi
Chapter 19: Protists and Fungi

... Section One: Diversity of Protists  Protists  A eukaryote that is not an animal, plant, or a fungus  Can share similar feature to animals, plants, and fungi  Can be heterotrophs, autotrophs, or decomposers ...
test mcq`s cells
test mcq`s cells

... Sara would like to film the movement of chromosomes during cell division. Her best choice for a microscope would be a a. light microscope, because of its resolving power. b. transmission electron microscope, because of its magnifying power. c. scanning electron microscope, because the specimen is al ...
4.5 Plant and Animal Cells
4.5 Plant and Animal Cells

... A number of small structures are seen within cells when they are observed under a microscope. These small structures are called organelles. Organelles (little organs) have unique functions, but work together to contribute to the cell’s life processes. All plant and animal cells contain a watery flui ...
Cell Organelles
Cell Organelles

... animal cells, it contains two small structures called centrioles. Centrioles (sehn-tree-ohl z) are cylinder-shaped organelles made of short microtubules arranged in a circle. The two centrioles are perpendicular to each other, as shown in Figure 2.10. Before an animal cell divides, the centrosome, i ...
Location
Location

... • All the organelles work together! –For example, after some proteins are made by the ribosomes, the rough ER transports these proteins to the golgi apparatus, then the golgi makes vesicles that can fuse with the cell’s plasma membrane to release proteins to the environments outside the cellor used ...
cell
cell

... • All the organelles work together! –For example, after some proteins are made by the ribosomes, the rough ER transports these proteins to the golgi apparatus, then the golgi makes vesicles that can fuse with the cell’s plasma membrane to release proteins to the environments outside the cellor used ...
Module 5 Cell Transport PowerPoint_1
Module 5 Cell Transport PowerPoint_1

... through transport proteins found in the membrane a.Transport Proteins are specific – they “select” only certain molecules to cross the membrane ...
NCERT Short Notes - vaisesika.org.in
NCERT Short Notes - vaisesika.org.in

... Plasmolysis: When a living plant cell loses water through osmosis there is shrinkage or contraction of the contents of the cell away from the cell wall. This phenomenon is known as Plasmolysis. ...
Chapter 6: A Tour of the Cell
Chapter 6: A Tour of the Cell

... how they are alike—compare—and tell how they are different—contrast. Remember this hint when you see a similar phrase on an exam.) ...
Chapter 6 guided reading handouts
Chapter 6 guided reading handouts

... how they are alike—compare—and tell how they are different—contrast. Remember this hint when you see a similar phrase on an exam.) ...
3 Cell Boundaries powerpoint
3 Cell Boundaries powerpoint

... substances pass through it • Cell membrane is selectively permeable, which means that it lets some things in but does not let other things in ...
cell wall - take2theweb
cell wall - take2theweb

... •Explain what would happen if a plant cell was surrounded by a solution with a higher water concentration. Water molecules would move into the plant cell by osmosis from high concentration outside cell and it would become turgid as it has a cell wall to prevent it bursting •In both cases above whic ...
Name: Date:______ Period:____ Study Guide: Cell KEY Directions
Name: Date:______ Period:____ Study Guide: Cell KEY Directions

... definition. Imagine you are explaining this word to a person who has never heard it. Use your own words, phrases, and adjectives . Use anything and everything that you learned.)  Use your Cell Guided Notes A cell is the building block of life that makes up anything living. A cell is a tiny factory ...
CHAPTER 5 student notes - Doral Academy Preparatory
CHAPTER 5 student notes - Doral Academy Preparatory

... from over-expanding. In plants the pressure exerted on the cell wall is called tugor pressure. •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so they do n ...
cell structure and function research projects
cell structure and function research projects

... 2. Assign a section of the story to each member of your group. Sections are listed below 3. Discuss and outline your story (intro, body, conclusion) with your team. Remember to use the same character names and tenses in each section. 4. Begin researching and writing your story. Some materials you ma ...
Create a Cell Project
Create a Cell Project

... *You have to create a cell using all the organelles discussed in class. You may choose to create a plant cell or an animal. Make sure that you include the correct organelles for the cell you chose to create. The cell organelles should resemble their actual structure within the cell or be related to ...
Slide 1 - Simpson
Slide 1 - Simpson

... Carry proteins and other materials from one part of the cell to another. The smooth type of this organelle does not contain ribosomes. The rough has ribsomes attached. ...
Unit 5 Slideshow Quiz Write down your answers and see how many
Unit 5 Slideshow Quiz Write down your answers and see how many

... • C. chloroplasts • D. endoplasmic reticulum ...
< 1 ... 144 145 146 147 148 149 150 151 152 ... 393 >

Cytoplasmic streaming



Cytoplasmic streaming, also called protoplasmic streaming and cyclosis, is the directed flow of cytosol (the liquid component of the cytoplasm) and organelles around large fungal and plant cells through the mediation of actin. This movement aids in the delivery of organelles, nutrients, metabolites, genetic information, and other materials to all parts of the cell. Cytoplasmic streaming occurs along actin filaments in the cytoskeleton of the cell.Cytoplasmic streaming was first discovered in the 1830s. The scientific breakthrough assisted scientists in developing an understanding of the different roles of cells and how they function as the basic operating systems of life.This process occurs through the operation of motor proteins called myosins.These proteins use energy of adenosine triphosphate (ATP) to act as a molecular motor, which slides along actin filaments. This works in a manner that tows the organelles and other cytoplasmic contents in the same direction. Myosin proteins consist of two conjoined proteins. If one protein remains attached to the substrate, the substance acted upon by the protein, such as a microfilament, has the ability to move organelles through the cytoplasm.The green alga genus Chara and other genera in the Division Charophyta, such as Coleochaete, are thought to be the closest relatives of land plants. These haploid organisms contain some of the largest plant cells on earth, a single cell of which can reach up to 10 cm in length. The large size of these cells demands an efficient means to distribute resources, which is enabled via cytoplasmic streaming.Cytoplasmic streaming is strongly dependent upon intracellular pH and temperature. It has been observed that the effect of temperature on cytoplasmic streaming created linear variance and dependence at different high temperatures in comparison to low temperatures. This process is complicated, with temperature alterations in the system increasing its efficiency, with other factors such as the transport of ions across the membrane being simultaneously affected. This is due to cells homeostasis depending upon active transport which may be affected at some critical temperatures.In plant cells, chloroplasts may be moved around with the stream, possibly to a position of optimum light absorption for photosynthesis. The rate of motion is usually affected by light exposure, temperature, and pH levels.In reference to pH, because actin and myosin are both proteins, strong dependence on pH is expected. The optimal pH at which cytoplasmic streaming is highest, is achieved at neutral pH and decreases at both low and high pH.The flow of cytoplasm may be stopped by:Adding Lugol's iodine solutionAdding Cytochalasin D (dissolved in dimethyl sulfoxide)↑ ↑ ↑ ↑ ↑ ↑
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report