cytoskeleton
... provide movement within a cell. The way cytoskeleton is distributed throughout the cell, a “scaffold” type structure forms to anchor certain enzymes and macromolecules within the cytoplasm. Having cytoskeleton is crucial to a cell because although it is just a small part of its Anatomy, without it, ...
... provide movement within a cell. The way cytoskeleton is distributed throughout the cell, a “scaffold” type structure forms to anchor certain enzymes and macromolecules within the cytoplasm. Having cytoskeleton is crucial to a cell because although it is just a small part of its Anatomy, without it, ...
06_DetailLectOut_jkAR
... The smooth ER is rich in enzymes and plays a role in a variety of metabolic processes. Enzymes of smooth ER synthesize lipids, including oils, phospholipids, and steroids. These include the sex hormones of vertebrates and adrenal steroids. In the smooth ER of the liver, enzymes help detoxify p ...
... The smooth ER is rich in enzymes and plays a role in a variety of metabolic processes. Enzymes of smooth ER synthesize lipids, including oils, phospholipids, and steroids. These include the sex hormones of vertebrates and adrenal steroids. In the smooth ER of the liver, enzymes help detoxify p ...
What are Cells?
... Information for the Teacher Teacher Notes for Activity Prep: Students can be surveyed the day before this activity to find out whether they will model a plant or animal cell. Alternatively half of the class can be randomly picked to model an animal cell or a plant cell. ...
... Information for the Teacher Teacher Notes for Activity Prep: Students can be surveyed the day before this activity to find out whether they will model a plant or animal cell. Alternatively half of the class can be randomly picked to model an animal cell or a plant cell. ...
File
... revolutions per minute and apply forces of more than 1 million times gravity (1,000,000 g). ― Fractionation begins with homogenization, gently disrupting the cell. ― The homogenate is spun in a centrifuge to separate heavier pieces into the pellet while lighter particles remain in the supernatant. o ...
... revolutions per minute and apply forces of more than 1 million times gravity (1,000,000 g). ― Fractionation begins with homogenization, gently disrupting the cell. ― The homogenate is spun in a centrifuge to separate heavier pieces into the pellet while lighter particles remain in the supernatant. o ...
Passive Transport
... •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 ...
... •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 ...
TITLE: CELL ANALOGIES COLLAGE
... MATERIALS: 6" X 8" pieces of drawing paper, 14" X 28" pieces of colored construction paper, text with illustration of cell structure to refer to, scissors, paste, drawing pencils or pens, magazines and newspaper ad sections. PROCEDURE: Define analogy: "A comparison between two things which are simil ...
... MATERIALS: 6" X 8" pieces of drawing paper, 14" X 28" pieces of colored construction paper, text with illustration of cell structure to refer to, scissors, paste, drawing pencils or pens, magazines and newspaper ad sections. PROCEDURE: Define analogy: "A comparison between two things which are simil ...
Unit 3: Cells Name SES: Pages 51-75 HRW: Pages 68
... Kingdom Archaea. Eubacteria are common bacteria that occur all around us, usually they are on surfaces and in the soil. You can only find Archaea in extreme environments, like hot sulfur springs. Archaea are thought to be some of the oldest life forms on earth. Most prokaryotes are not autotrophs an ...
... Kingdom Archaea. Eubacteria are common bacteria that occur all around us, usually they are on surfaces and in the soil. You can only find Archaea in extreme environments, like hot sulfur springs. Archaea are thought to be some of the oldest life forms on earth. Most prokaryotes are not autotrophs an ...
Document
... Read pages 184-189 Answer the following questions: 1. What are some of the functions of the cell membrane? 2. What is diffusion? Does it move from a high to low concentration, or a low to high concentration? 3. What is osmosis? 4. What does it mean to be selectively permeable? 5. Describe the basic ...
... Read pages 184-189 Answer the following questions: 1. What are some of the functions of the cell membrane? 2. What is diffusion? Does it move from a high to low concentration, or a low to high concentration? 3. What is osmosis? 4. What does it mean to be selectively permeable? 5. Describe the basic ...
Cell Basics
... Diffusion – The process of matter spreading out evenly from its source. An example of ...
... Diffusion – The process of matter spreading out evenly from its source. An example of ...
Cell Biology Review - Madison County Schools
... To allow substances to enter and leave the cell ...
... To allow substances to enter and leave the cell ...
What does a cell need?
... Importing proteins to organelles Membrane-enclosed organelles import proteins by one of three mechanisms. ...
... Importing proteins to organelles Membrane-enclosed organelles import proteins by one of three mechanisms. ...
Document
... cross the membrane as it enters or leaves the cell. B. Carrier proteins - a protein that selectively interacts with a specific molecule or ion so that it can cross the cell membrane to enter or exit the cell. ...
... cross the membrane as it enters or leaves the cell. B. Carrier proteins - a protein that selectively interacts with a specific molecule or ion so that it can cross the cell membrane to enter or exit the cell. ...
3 Movement of substances across cell membrane 3.1 Cell membrane
... It is a (21) _____________ process and does not require (22) _____________. (23) _____________ _____________ (水勢) describes the tendency of water molecules to move from one place to another. Pure water has the (24) _____________ (highest / lowest) water potential which is defined as (25) ___________ ...
... It is a (21) _____________ process and does not require (22) _____________. (23) _____________ _____________ (水勢) describes the tendency of water molecules to move from one place to another. Pure water has the (24) _____________ (highest / lowest) water potential which is defined as (25) ___________ ...
Exam #1 Review
... e. all of the above are true. *IMPORTANT: There will be a question regarding the cytoplasmic membrane and the Fluid Mosaic Model. a. Transport - small hydrophobic molecules and small gas molecules can diffuse across the membrane (simple diffusion) but large, hydrophilic molecules and charged molecul ...
... e. all of the above are true. *IMPORTANT: There will be a question regarding the cytoplasmic membrane and the Fluid Mosaic Model. a. Transport - small hydrophobic molecules and small gas molecules can diffuse across the membrane (simple diffusion) but large, hydrophilic molecules and charged molecul ...
cell membrane
... plant cell is due primarily to the presence of the (1) chloroplasts (2) centrosomes (3) cell membrane (4) cell wall ...
... plant cell is due primarily to the presence of the (1) chloroplasts (2) centrosomes (3) cell membrane (4) cell wall ...
Incredible Cell Project - Streetsboro City Schools
... OPTION ONE: 3D Model of a Plant or Animal Cell Make a three dimensional model of a plant or animal cell. Identify the type of cell (plant or animal). Include all of the appropriate organelles (11 for plant cells, 9 for animal cells) as listed in your organizer and label each directly on the model. W ...
... OPTION ONE: 3D Model of a Plant or Animal Cell Make a three dimensional model of a plant or animal cell. Identify the type of cell (plant or animal). Include all of the appropriate organelles (11 for plant cells, 9 for animal cells) as listed in your organizer and label each directly on the model. W ...
Eukaryotic cells
... • Mitochondria are the sites of cellular respiration, which produce ATP from the energy of food molecules. ...
... • Mitochondria are the sites of cellular respiration, which produce ATP from the energy of food molecules. ...
Chapter 6 A Tour of the Cell
... tags that indicates where they are going vesicles have receptor proteins on external surface that “recognize” where vesicle is supposed to dock (other organelles, plasma membrane) ...
... tags that indicates where they are going vesicles have receptor proteins on external surface that “recognize” where vesicle is supposed to dock (other organelles, plasma membrane) ...
a. Cell Membrane
... 1. A student observes a flower, an apple, a dog, and a tree. Which of the organisms that the student sees has DIFFERENT cells than the rest, and how are the cells different? a. The flower is DIFFERENT because its cells are the only ones WITHOUT a nucleus. b. The apple is DIFFERENT because its cells ...
... 1. A student observes a flower, an apple, a dog, and a tree. Which of the organisms that the student sees has DIFFERENT cells than the rest, and how are the cells different? a. The flower is DIFFERENT because its cells are the only ones WITHOUT a nucleus. b. The apple is DIFFERENT because its cells ...
3.1 Cell Theory Early studies led to the development of the cell theory.
... There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus. nucleus • Prokaryotic cells do not have membrane-bound organelles. organelles ...
... There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus. nucleus • Prokaryotic cells do not have membrane-bound organelles. organelles ...
5.5 Transport
... The net movement of water will be from side B to side A. The net movement of water will be from side A to side B. Side B is hypertonic relative to side A. There will be no net movement of water. ...
... The net movement of water will be from side B to side A. The net movement of water will be from side A to side B. Side B is hypertonic relative to side A. There will be no net movement of water. ...
Osmosis in Red Blood Cells
... it is diffusion (across a membrane) from a high concentration to a lower concentration. • However, this time the rate of diffusion is greatly accelerated by the action of membrane proteins that act as carrier molecules and aid in diffusion. http://www.northland.cc.mn.us/biology/Biology1111/animation ...
... it is diffusion (across a membrane) from a high concentration to a lower concentration. • However, this time the rate of diffusion is greatly accelerated by the action of membrane proteins that act as carrier molecules and aid in diffusion. http://www.northland.cc.mn.us/biology/Biology1111/animation ...
Cell Jeopardy PPT - Effingham County Schools
... Once a zygote is formed immediately after conception, what process will continue to occur until an individual reaches puberty (for the most part)? ...
... Once a zygote is formed immediately after conception, what process will continue to occur until an individual reaches puberty (for the most part)? ...
Cell Analogy: Airport
... • Location: The cell wall surrounds the entire cell, including the cell membrane, but is only in plant cells. • Function: The cell wall protects plant cells, provides some structural support, protection, but also works as a pressure vessel in that it prevents the cell from over expansion and going t ...
... • Location: The cell wall surrounds the entire cell, including the cell membrane, but is only in plant cells. • Function: The cell wall protects plant cells, provides some structural support, protection, but also works as a pressure vessel in that it prevents the cell from over expansion and going t ...
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)↑ ↑ ↑ ↑ ↑ ↑