Concentration gradient
... Osmosis is powered by the unequal distribution of particles called a concentration gradient. The difference in concentration causes water to move across the membrane. ...
... Osmosis is powered by the unequal distribution of particles called a concentration gradient. The difference in concentration causes water to move across the membrane. ...
Unit 1 Topic 1: Cells - Inverness Royal Academy
... of 2 small pieces of paper. Measure out 20cm3 of water into 1 beaker and 20cm3 of yeast suspension into another beaker. Add one portion of flour to the water and the other to the yeast suspension and stir with stirring rods. Pour the dough into 2 labelled plastic beakers. Record the volume and put t ...
... of 2 small pieces of paper. Measure out 20cm3 of water into 1 beaker and 20cm3 of yeast suspension into another beaker. Add one portion of flour to the water and the other to the yeast suspension and stir with stirring rods. Pour the dough into 2 labelled plastic beakers. Record the volume and put t ...
Eukaryotic Cells - Westerville City Schools
... Regardless of plant cell or animal cell, they all have a cell membrane. For plant cells, the cell membrane is just inside the cell wall, but for animal cells the cell membrane is the outer most covering. Remember, animal cells do not have a cell wall ☺. The cell membrane is a soft protective l ...
... Regardless of plant cell or animal cell, they all have a cell membrane. For plant cells, the cell membrane is just inside the cell wall, but for animal cells the cell membrane is the outer most covering. Remember, animal cells do not have a cell wall ☺. The cell membrane is a soft protective l ...
The Cell Wall
... as motility. Internal movements of organelles are governed by actin filaments and other components of the cytoskeleton. These filaments make an area in which organelles such as chloroplasts can move. Internal movement is known as cytoplasmic streaming. External movement of cells is determined by spe ...
... as motility. Internal movements of organelles are governed by actin filaments and other components of the cytoskeleton. These filaments make an area in which organelles such as chloroplasts can move. Internal movement is known as cytoplasmic streaming. External movement of cells is determined by spe ...
Cell Organelle PowerPoint - Mrs. Gracie Gonzalez Biology Class
... The Eukaryotic Cell Eukaryotic cells are complex cells that contain many specialized parts known as organelles. These organelles often have their own membrane, and they help the cell perform the complex tasks needed for survival. ...
... The Eukaryotic Cell Eukaryotic cells are complex cells that contain many specialized parts known as organelles. These organelles often have their own membrane, and they help the cell perform the complex tasks needed for survival. ...
Membrane Transport Review Powerpoint
... to low concentrations •Water moves freely through pores. •Solute (green) to large to move across. ...
... to low concentrations •Water moves freely through pores. •Solute (green) to large to move across. ...
A. diffuser
... 12. When molecules move from high to low along a concentration gradient we say they are moving “_D_ ___ ___ ___” the gradient. 13. _O_ ___ ___ ___ ___ ___ ___ pressure is caused by water inside a plant cell pushing against the cell wall. 14. The shrinking of a plant cell membrane away from the cell ...
... 12. When molecules move from high to low along a concentration gradient we say they are moving “_D_ ___ ___ ___” the gradient. 13. _O_ ___ ___ ___ ___ ___ ___ pressure is caused by water inside a plant cell pushing against the cell wall. 14. The shrinking of a plant cell membrane away from the cell ...
So, what is a cell anyway?
... Schematic of typical animal cell. (1) nucleolus (2) nucleus (3) Ribosomes (little dots) (4) vesicle (5) rough endoplasmic reticulum (ER) (6) Golgi apparatus (7) Cytoskeleton (8) smooth endoplasmic reticulum (ER) (9) mitochondria (10) vacuole (11) cytosol (not cytoplasm as that includes all the orga ...
... Schematic of typical animal cell. (1) nucleolus (2) nucleus (3) Ribosomes (little dots) (4) vesicle (5) rough endoplasmic reticulum (ER) (6) Golgi apparatus (7) Cytoskeleton (8) smooth endoplasmic reticulum (ER) (9) mitochondria (10) vacuole (11) cytosol (not cytoplasm as that includes all the orga ...
Cell Membranes
... Fluidity of the Cell Membrane • For cells to function, fluidity must be optimal • Too Fluid: membrane structure is weakened • Too Rigid: many functions, such as transport, cease • As temperatures cool, membranes switch from fluid to solid • The temperature at which this takes place depends on: 1) T ...
... Fluidity of the Cell Membrane • For cells to function, fluidity must be optimal • Too Fluid: membrane structure is weakened • Too Rigid: many functions, such as transport, cease • As temperatures cool, membranes switch from fluid to solid • The temperature at which this takes place depends on: 1) T ...
- Triumph Learning
... energy from sunlight. Some protists, including algae, also have chloroplasts. Some bacteria carry out photosynthesis, but they do not have chloroplasts. In these bacteria, chlorophyll is scattered through the cytoplasm. Animals and fungi do not have chloroplasts or carry out photosynthesis. ...
... energy from sunlight. Some protists, including algae, also have chloroplasts. Some bacteria carry out photosynthesis, but they do not have chloroplasts. In these bacteria, chlorophyll is scattered through the cytoplasm. Animals and fungi do not have chloroplasts or carry out photosynthesis. ...
cell membrane info ws - Hicksville Public Schools
... are called integral proteins. Because the cell membrane is selectively permeable, cells must have mechanisms for transporting molecules through the lipid bilayer. Membrane proteins play an important role in this process. For example, some integral proteins form channels or pores through which certai ...
... are called integral proteins. Because the cell membrane is selectively permeable, cells must have mechanisms for transporting molecules through the lipid bilayer. Membrane proteins play an important role in this process. For example, some integral proteins form channels or pores through which certai ...
TITLE: CELL ANALOGIES COLLAGE
... Preparation time: Materials for collages must be gathered and set up for student use. Class time needed: Part of a day to define an analogy, give one or two examples, and explain the collage format. The collage may be done at home or during 2 or 3 class periods. MATERIALS: 6" X 8" pieces of drawing ...
... Preparation time: Materials for collages must be gathered and set up for student use. Class time needed: Part of a day to define an analogy, give one or two examples, and explain the collage format. The collage may be done at home or during 2 or 3 class periods. MATERIALS: 6" X 8" pieces of drawing ...
Cell Structure & Function
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
Cell Structures
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
Cell Notes Part 1 & 2
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
Bacterial Morphology Arrangement
... c). position monotrichous lophotrichous peritrichous d). structure ...
... c). position monotrichous lophotrichous peritrichous d). structure ...
CELL STRUCTURE AND FUNCTION
... – Particles collide with one another and spread out randomly. – Particles move from areas where they are more concentrated to areas where they are less concentrated, also known as diffusion. – They do this until the concentration of particles is the same throughout the system, known as equilibrium. ...
... – Particles collide with one another and spread out randomly. – Particles move from areas where they are more concentrated to areas where they are less concentrated, also known as diffusion. – They do this until the concentration of particles is the same throughout the system, known as equilibrium. ...
Eukaryotic Cells - Westerville City Schools
... Regardless of plant cell or animal cell, they all have a cell membrane. For plant cells, the cell membrane is just inside the cell wall, but for animal cells the cell membrane is the outer most covering. Remember, animal cells do not have a cell wall . The cell membrane is a soft protective layer t ...
... Regardless of plant cell or animal cell, they all have a cell membrane. For plant cells, the cell membrane is just inside the cell wall, but for animal cells the cell membrane is the outer most covering. Remember, animal cells do not have a cell wall . The cell membrane is a soft protective layer t ...
Cell Transport Powerpoint presentation
... •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 ...
Cell Transport Powerpoint presentation
... •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 ...
Cell 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 ...
Cell Structure & Function
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
... other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html ...
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)↑ ↑ ↑ ↑ ↑ ↑