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... Much of cytoplasm is occupied by folded system of membranes, called endoplasmic reticulum (ER). -folded membrane forms network of interconnected compartments inside cell. Large surface area can be packed into small area by folding surfaces. -membranes provide large surface area where chemical reacti ...
3.5 Active Transport
3.5 Active Transport

... form a vesicle inside the cell.  Vesicles that form by endocytosis may fuse with lysosomes or ...
Cell Structure & Function
Cell Structure & Function

... –Water moves from hypotonic to hypertonic solution –Isotonic water moves both ways ...
Study Guide/Cheat sheet for Cell Unit
Study Guide/Cheat sheet for Cell Unit

... (specialized proteins) help control the rate of chemical reactions (usually speeds it up without being used up). They are effected by Temperature (hotter is faster) and pH (acid/base amounts) -they are effected by concentration (higher concentration the faster it will happen) ...
100% Distilled Water 80% H 2 O 80% Water 20% Dissolved
100% Distilled Water 80% H 2 O 80% Water 20% Dissolved

... M. Define the types of active transport. 1. Endocytosis is active transport whereby cells use the cell membrane to bring large particles into the cell. Types of endocytosis: a. Phagocytosis is ingestion of large particles by the cell membrane. b. Pinocytosis occurs when the cell draws in small molec ...
Macromolecules to Organelles to Cells
Macromolecules to Organelles to Cells

... b. Membrane and proteins control what goes in and out of cell c. Proteins act like pores, channels, pumps and carriers d. Many enzymes in the cell membrane speed up chemical reactions e. Carbohydrate “antenna” embedded in membrane allows cells to communicate ...
RIDDLES - Mexico Central School District
RIDDLES - Mexico Central School District

... •They have such powerful enzymes they can destroy a whole cell. Example: Tadpole’s tail. ...
Study Guide/Cheat sheet for Cell Unit
Study Guide/Cheat sheet for Cell Unit

... (specialized proteins) help control the rate of chemical reactions (usually speeds it up without being used up). They are effected by Temperature (hotter is faster) and pH (acid/base amounts) -they are effected by concentration (higher concentration the faster it will happen) ...
alternative quiz assignment - Garnet Valley School District
alternative quiz assignment - Garnet Valley School District

... Provides temporary storage of food, enzymes and waste products Firm, protective structure that gives the cell its shape in plants, fungi, most bacteria and some protests Produces a usable form of energy for the cell Packages proteins for transport out of the cell Responsible for packaging up materia ...
cell analogy 2009 project
cell analogy 2009 project

... Introduction Cells need to carry on the same basic functions as we do to sustain life; the difference is cells do this with much smaller parts. These smaller structures that allow the cell to function are called organelles – “tiny organs.” Also plant and animal cells have some similar parts and some ...
Ch 23 Amoeba
Ch 23 Amoeba

... Amoeba Amoeba is a single celled organism found in ponds, soil and even as a human parasite. It is a member of the kingdom Protista. The outer layer of cytoplasm is called ectoplasm it is a jelly-like layer next to the cell membrane, which supports and strengthens the cell. The inner more liquid cyt ...
Introduction to Prokaryotes versus Eukaryotes
Introduction to Prokaryotes versus Eukaryotes

... Both types of eukaryotic cells have numerous mitochondria. The mitochondria are nicknamed the “powerhouse” of the cell because they are the site of aerobic respiration and ATP (energy) production. Also present in both cell types is an endoplasmic reticulum. The endoplasmic reticulum, or ER, is liter ...
Hypertonic, Hypotonic and Isotonic
Hypertonic, Hypotonic and Isotonic

... • Facilitated diffusion is the process in which molecules that cannot directly diffuse across the membrane pass through special protein channels. o Examples: glucose and water ...
Cell Unit Review
Cell Unit Review

... n. Which!organelles!processes!and!transports!proteins?!____________________________________________! o. Which!organelle!contains!digestive!enzymes!to!break!down!foreign!invaders?!_________________________! p. Which!organelle!is!a!network!of!fibers!that!criss‐cross!to!support!a!cell!from!the!inside?! ...
The Cell - Walton High
The Cell - Walton High

... chloroplasts which contain chlorophyll for photosynthesis.  Plant cells have a large central vacuole. Filled with water, it creates pressure on the walls. ...
Transport Ch. 7 section 3
Transport Ch. 7 section 3

... •Water will move INTO cell causing it to swell (it always moves to where there is more substances) •Cells could rupture if the cell takes in too much water •This increases pressure inside of cell (TURGOR ...
Honors Biology Unit 3 Ch.4,5 Cells & Membranes THINKING AHEAD:
Honors Biology Unit 3 Ch.4,5 Cells & Membranes THINKING AHEAD:

... c. I can describe the functions of organelles that make energy for cell metabolism: mitochondria and chloroplasts. d. I can describe the functions of organelles that store products in a cell: vacuoles and lysosomes. e. I can describe the functions of the organelles that give the cell shape and struc ...
Cell Review
Cell Review

... Prokaryotic Cells: these are simple cells that consist of little more than a cell membrane, some DNA, and cytoplasm; they do not have a nucleus or any organelles (membrane-bound structures) ...
Cell Wall - Qld Science Teachers
Cell Wall - Qld Science Teachers

...  Found at sites of highest metabolism (e.g. muscle cells) to produce energy-rich molecules of ATP (Adenosine Triphosphate)  Mitochondria have a double membrane – the outer membrane around the entire mitochondrion, and the inner membrane folded back and forth for large surface area for chemical rea ...
MADANIA (High School) Grade 10-Biology
MADANIA (High School) Grade 10-Biology

... All living organisms on Earth are divided in pieces called cells. There are smaller pieces to cells that include protein and organelles. There are also larger pieces called tissues and systems. Cells are small compartments that hold all of the biological equipment necessary to keep an organism alive ...
Cells and Their Organelles The cell is the basic unit of life. The
Cells and Their Organelles The cell is the basic unit of life. The

... cell and produces proteins in sacks called cistern which are sent to the Golgi body, or inserted into the cell membrane. The Golgi apparatus or Golgi complex is a flattened, layered, sac-like organelle that looks like a stack of pancakes. The Golgi body modifies & packages proteins and carbohydrates ...
The Structure and Function of Cells
The Structure and Function of Cells

... What’s inside the nucleus? DNA (deoxyribonucleic acid) DNA tells the cell what proteins to make and what the cell needs to do. ...
Cell Processes Review
Cell Processes Review

... When vesicles are formed at the endoplasmic reticulum of Golgi complex and they carry large particles to the cell membrane to exit the cell, this is called ...
Honors Biology CHAPTER Four: “A Tour of the Cell“
Honors Biology CHAPTER Four: “A Tour of the Cell“

... c. I can describe the functions of organelles that make energy for cell metabolism: mitochondria and chloroplasts. d. I can describe the functions of organelles that store products in a cell: vacuoles and lysosomes. e. I can describe the functions of the organelles that give the cell shape and struc ...
Cell organelle Notes - Warren County Schools
Cell organelle Notes - Warren County Schools

... phospholipids and embedded proteins. Color and label the cell membrane tan. Plant cells have an additional layer surrounding them called the cell wall. The cell wall is made of nonliving material called cellulose. Color and label the cell wall brown. The centrosome (also called the "microtubule orga ...
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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)↑ ↑ ↑ ↑ ↑ ↑
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