cells_specialisation_and_tissue File
... The idea of this series of six questions is that they can be used as a plenary at the end of each section of the work on cells. The question is asked and the answers appear. After the answers have finished moving they will eventually come to rest in the eight boxes which are labelled A-H. The winner ...
... The idea of this series of six questions is that they can be used as a plenary at the end of each section of the work on cells. The question is asked and the answers appear. After the answers have finished moving they will eventually come to rest in the eight boxes which are labelled A-H. The winner ...
Plasma membrane
... active transport is accomplished by the use of carrier proteins remember, they are like doors that open and close by changing shape generally, each carrier protein has a specific shape that fits a specific molecule or ion when the proper molecule “binds” with the protein, cellular energy is used to ...
... active transport is accomplished by the use of carrier proteins remember, they are like doors that open and close by changing shape generally, each carrier protein has a specific shape that fits a specific molecule or ion when the proper molecule “binds” with the protein, cellular energy is used to ...
CELLS - Moodle
... ENDOSYMBIOTIC THEORY • In 1970, American biologist, Lynn Margulis, provided evidence that some organelles within cells were at one time free living cells themselves • Supporting evidence included organelles with their own DNA • Chloroplast and Mitochondria ...
... ENDOSYMBIOTIC THEORY • In 1970, American biologist, Lynn Margulis, provided evidence that some organelles within cells were at one time free living cells themselves • Supporting evidence included organelles with their own DNA • Chloroplast and Mitochondria ...
Plasma Membrane
... drive the active transport of several other solutes through cotransport via a different protein As the solute that has been actively transported diffuses back passively through a transport protein, its movement can be coupled with the active transport of another substance against its concentration ...
... drive the active transport of several other solutes through cotransport via a different protein As the solute that has been actively transported diffuses back passively through a transport protein, its movement can be coupled with the active transport of another substance against its concentration ...
Cell Membrane Transport
... 1. The steepness of the concentration gradient.. 2. Temperature. 3. The surface area. 4. The type of molecule or ion diffusing. ...
... 1. The steepness of the concentration gradient.. 2. Temperature. 3. The surface area. 4. The type of molecule or ion diffusing. ...
Lisa
... mitochondria, and the inner one folds over many times to increase the surface area of the organelle. Because of the increased surface area, more work can be done. Have fluid inside of them called the matrix. Provide the cell it’s energy (creating the energy is called cellular respiration). They are ...
... mitochondria, and the inner one folds over many times to increase the surface area of the organelle. Because of the increased surface area, more work can be done. Have fluid inside of them called the matrix. Provide the cell it’s energy (creating the energy is called cellular respiration). They are ...
Cellular Transport and the Cell Cycle
... wastes, but through a smaller surface area (cell membrane) ...
... wastes, but through a smaller surface area (cell membrane) ...
Cytology - Ivy Anatomy
... hypertonic: solution that has a higher solute concentration than the cells ...
... hypertonic: solution that has a higher solute concentration than the cells ...
Cell Shapes - Maryville University
... • Cylinder of 13 parallel strands called protofilaments – (a long chain of globular protein called tubulin) • Hold organelles in place; maintain cell shape; guide organelles inside cell • Form axonemes of cilia and flagella, centrioles, basal bodies and mitotic spindle • Can be disassembled and reas ...
... • Cylinder of 13 parallel strands called protofilaments – (a long chain of globular protein called tubulin) • Hold organelles in place; maintain cell shape; guide organelles inside cell • Form axonemes of cilia and flagella, centrioles, basal bodies and mitotic spindle • Can be disassembled and reas ...
Document
... • Cylinder of 13 parallel strands called protofilaments – (a long chain of globular protein called tubulin) • Hold organelles in place; maintain cell shape; guide organelles inside cell • Form axonemes of cilia and flagella, centrioles, basal bodies and mitotic spindle • Can be disassembled and reas ...
... • Cylinder of 13 parallel strands called protofilaments – (a long chain of globular protein called tubulin) • Hold organelles in place; maintain cell shape; guide organelles inside cell • Form axonemes of cilia and flagella, centrioles, basal bodies and mitotic spindle • Can be disassembled and reas ...
I. The Cell Membrane: II. Three Functions of the Cell Membrane
... 3. Isotonic: solution outside of the cell has the same concentration of particles and the same concentration of water ...
... 3. Isotonic: solution outside of the cell has the same concentration of particles and the same concentration of water ...
CELLS
... ENDOSYMBIOTIC THEORY • In 1970, American biologist, Lynn Margulis, provided evidence that some organelles within cells were at one time free living cells themselves • Supporting evidence included organelles with their own DNA • Chloroplast and Mitochondria ...
... ENDOSYMBIOTIC THEORY • In 1970, American biologist, Lynn Margulis, provided evidence that some organelles within cells were at one time free living cells themselves • Supporting evidence included organelles with their own DNA • Chloroplast and Mitochondria ...
Centrosome Dynamics during the Meiotic Progression in the Mouse
... is added to isolated centrosomes, both phosphorylation and Mphase microtubule growth dynamics result, suggesting that cdc2 can regulate changes in centrosome-directed microtubule dynamics (11). Furthermore, investigations of Gotoh and colleagues have shown that maturation promoting factor acts local ...
... is added to isolated centrosomes, both phosphorylation and Mphase microtubule growth dynamics result, suggesting that cdc2 can regulate changes in centrosome-directed microtubule dynamics (11). Furthermore, investigations of Gotoh and colleagues have shown that maturation promoting factor acts local ...
ProblemSet2answerkey
... Primary active transport is transport that is directly coupled to the use of energy, generally as ATP hydrolysis. The major active transport in cells is the pumping of protons across membranes via the H+-pumping ATPase. Secondary active transport is transport that uses the conditions established by ...
... Primary active transport is transport that is directly coupled to the use of energy, generally as ATP hydrolysis. The major active transport in cells is the pumping of protons across membranes via the H+-pumping ATPase. Secondary active transport is transport that uses the conditions established by ...
Cell CELL Unicellular organisms are capable of
... replication and distribution to daughter cells. They also help in respiration, secretion process, to increase the surface area of the plasma membrane and enzymatic content. Question – 6 - How do neutral solutes move across the plasma membrane? Can the polar molecules also move across it in the same ...
... replication and distribution to daughter cells. They also help in respiration, secretion process, to increase the surface area of the plasma membrane and enzymatic content. Question – 6 - How do neutral solutes move across the plasma membrane? Can the polar molecules also move across it in the same ...
Clear cell follicular adenoma of the thyroid: A case report
... of the thyroid revealed an enlarged right lobe with a hyperactive nodule occupying most of the lobe. The surrounding thyroid tissue and the left lobe was partly suppressed. The patient had normal thyroid function with FT4 and TSH within normal range. Because the cytologic diagnosis was consistent wi ...
... of the thyroid revealed an enlarged right lobe with a hyperactive nodule occupying most of the lobe. The surrounding thyroid tissue and the left lobe was partly suppressed. The patient had normal thyroid function with FT4 and TSH within normal range. Because the cytologic diagnosis was consistent wi ...
Cytoskeletal Architecture and Cell Morphogenesis
... by the DYRK kinase Pom1 which forms gradients emanating from the cell tips (Figure 3). Our most recent work shows that Pom1 prevents Cdr2 node assembly at cell tips by reducing Cdr2 affinity for membrane lipids and down-regulating Cdr2 clustering abilities depending on interactions with Mid1. Interest ...
... by the DYRK kinase Pom1 which forms gradients emanating from the cell tips (Figure 3). Our most recent work shows that Pom1 prevents Cdr2 node assembly at cell tips by reducing Cdr2 affinity for membrane lipids and down-regulating Cdr2 clustering abilities depending on interactions with Mid1. Interest ...
Susana Lopes, PhD Institution: CEDOC
... This project sets out to investigate the role of time in the left-right organizer (LRO). This transient embryonic organ is crucial for determining the left-right identity of the vertebrate body-plan. Inside this organ there are exciting biophysical mechanisms of development to be investigated. Namel ...
... This project sets out to investigate the role of time in the left-right organizer (LRO). This transient embryonic organ is crucial for determining the left-right identity of the vertebrate body-plan. Inside this organ there are exciting biophysical mechanisms of development to be investigated. Namel ...
The Basic Unit of Life
... Place a drop of methylene blue stain and a strand of hair onto a slide. Use (Figure 2-A) as a guide. Gently scrape the inside of your cheek with the end of a toothpick. You will not be able to see anything on the toothpick when you remove it from your mouth (Figure 2-B). Dip the toothpick into the s ...
... Place a drop of methylene blue stain and a strand of hair onto a slide. Use (Figure 2-A) as a guide. Gently scrape the inside of your cheek with the end of a toothpick. You will not be able to see anything on the toothpick when you remove it from your mouth (Figure 2-B). Dip the toothpick into the s ...
Plant Cell
... PLANT • Function: Gives the cell most of its support and structure • A thick, rigid membrane that surrounds a plant cell • Bonds with other cell walls to form the structure of the plant ...
... PLANT • Function: Gives the cell most of its support and structure • A thick, rigid membrane that surrounds a plant cell • Bonds with other cell walls to form the structure of the plant ...
Cell Structure
... Vacuoles are fluid-filled sacs that hold materials. Lysosomes contain enzymes to digest material. Centrioles are tubes found in the centrosomes. ...
... Vacuoles are fluid-filled sacs that hold materials. Lysosomes contain enzymes to digest material. Centrioles are tubes found in the centrosomes. ...
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)↑ ↑ ↑ ↑ ↑ ↑