• 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
Osmosis Diffusion Notes
Osmosis Diffusion Notes

... 2. Receptor Protein- receives chemical signals from the blood and communicates them to the inside of the cell. 3. Glycoprotein + Carbohydrate- identifies the cell so it will not be destroyed. ...
Biology
Biology

... called equilibrium is reached.  The amount of a particular substance in a given volume is called the concentration of the substance.  When one area has a higher concentration than another area does, a concentration gradient exists. ...
Cell Structure and Function
Cell Structure and Function

... B. It is selectively permeable so only certain molecules can pass through it. C. It acts more like a fluid than a solid because its molecules are constantly moving D. Cell membranes surround all animal, plant, and bacterial cells. E. It is a bilayer composed mainly of phospholipids and proteins The ...
F 6 Biology - Ch 4: Cellular Organization Name: ( )
F 6 Biology - Ch 4: Cellular Organization Name: ( )

... - phospholipid molecules unchanged but is capable of movement (fluid) - protein molecules varied in size and have less regular arrangement (mosaic): some proteins occur on the surface of the phospholipid layer (peripheral); some extend into the phospholipid layer (integral); some extend completely a ...
Objective 8
Objective 8

... Kind of Cell: Plant or Animal. Please circle one Instructions:  You are to create a 3D (three-dimensional) cell that is at least 12 inches in diameter, but no bigger than your desk top. The model will relate to a place you are familiar with.  You may choose to do either a plant cell or an animal c ...
Lecture Notes
Lecture Notes

... microtubules - referred to as the 9 + 2 structure. - pairs of microtubules move past one another which causes the entire flagellum to undulate rather than rotate. - flagella are outward projections of the cell - they contain cytoplasm and are enclosed by the plasma membrane. - the basal body is loca ...
L3 Cell Parts Jan 2017
L3 Cell Parts Jan 2017

... A VESICLE is a small vacuole ¨  are used for transport and storage of materials ¨  Plant cells usually have one large Central Vacuole. ...
Cell Catalog - Mission Hills High School
Cell Catalog - Mission Hills High School

... living things and cells reproduce other cells. Each cell has many organelles (parts) which carry out the physical and chemical functions for it. ...
Animal cell - Technology in Education with Lara Means
Animal cell - Technology in Education with Lara Means

... The Cell Membrane is like a plastic bag around the outside of the cell. It helps to hold all of the cells structures and fluids inside. ...
The Cell - Rocoscience
The Cell - Rocoscience

... or more cells. • Cells are the basic units of structure and function in an organism. • Cells come only from reproduction of existing cells. ...
Cell Structure & Function
Cell Structure & Function

... Found in bacteria, fungus, and plant cells only! (NOT animal cells) ...
Plasma Membrane
Plasma Membrane

... pressure in a plant cell. Loss of turgor pressure causes wilting (plasmolysis). ...
Warm-Up
Warm-Up

... and cotransport in plant transport.  The role of diffusion, active transport, and bulk flow in the movement of water and nutrients in plants.  How the transpiration cohesion-tension mechanism explain water movement in plants.  How pressure flow explains translocation. ...
Membrane WS
Membrane WS

... The above four containers represent solutions with different concentrations of solutes. Answer the following questions using what you know about osmosis and diffusion. 1. Which container has the greatest concentration of solutes? 2. Which container has the least concentration of solutes? 3. The mov ...
pumps
pumps

... • Movement of matter (particles) from a high concentration to a low concentration • Moves particles that are small in size such as … Carbon dioxide diffusion of particles ions diffusion of ink wastes ...
Nucleus
Nucleus

... 2. Not part of the endomembrane system. 3. Eukaryotic plant and algae organelles. 4. Types: Amyloplasts, Chromoplasts, and Chloroplasts. 5. Chloroplasts: inside contains thylakoid stacks – grana and ...
Cell Theory Rap
Cell Theory Rap

... About a real tough topic called the cell theory. All animals, plants, and protists too, Are made of cells with different jobs to do. They're the basic units of all organisms, And I hope by now you got the rhythm. It all started with one dude named Hooke. Who at some cork cells took a look. The anima ...
Homeostasis and Transport
Homeostasis and Transport

... 3. Name some molecules that may have difficulty entering or leaving a cell. 4. What organelles (aside from the cell membrane) have one or more lipid bilayers? ...
Cell Division
Cell Division

... Interphase: animal cell ...
discov5_lecppt_Ch06
discov5_lecppt_Ch06

... from Sunlight • Plants and algae use chloroplasts to capture energy from sunlight to produce ATP • The ATP is then used to assemble sugar molecules from carbon dioxide and water in a process called photosynthesis • The energy in plant sugars is used directly by plants and indirectly by all organisms ...
cell - Exploration Works
cell - Exploration Works

... The head of a pin is about 2mm in diameter. A cell is even smaller. Nearly invisible without magnification, dust mites dwarf pollen grains and human cells. In turn, bacteria and viruses are even smaller. ...
Virtual Cell Worksheet
Virtual Cell Worksheet

... The thick ropy strands are the _____________________________. The large solid spot is the _____________________. The nucleolus is a knot of __________________ chromatin. It manufactures __________________________. Dissolve and move to next page. The nucleolus is a spot of condensed _______________. ...
Cell Transport
Cell Transport

... A similarity between like features of two things, on which a comparison may be based. Examples: ...
Vocabulary Review
Vocabulary Review

... The swelling and eventual bursting of a cell as water moves into it when placed in a hypotonic environment ...
Cell wall - De Anza College
Cell wall - De Anza College

...  Hooke was the first to sketch and name ...
< 1 ... 212 213 214 215 216 217 218 219 220 ... 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