CELLS - TeacherWeb
... • Heads contain glycerol & phosphate and are hydrophilic (attract water) • Tails are made of fatty acids and are hydrophobic (repel water) • Make up a bilayer where tails point inward toward each other • Can move laterally to allow small molecules (O2, CO2, & H2O to enter) ...
... • Heads contain glycerol & phosphate and are hydrophilic (attract water) • Tails are made of fatty acids and are hydrophobic (repel water) • Make up a bilayer where tails point inward toward each other • Can move laterally to allow small molecules (O2, CO2, & H2O to enter) ...
Introduction to Cellular Structure • All organisms are composed of
... • The cell is the structural and functional unit of life • Human adults are made up of ~100 trillion cells • Each cell has an outer boundary called the plasma (cell) membrane which isolates the fluid within the cell from the fluid that surrounds the cell • Some cells function individually, while mos ...
... • The cell is the structural and functional unit of life • Human adults are made up of ~100 trillion cells • Each cell has an outer boundary called the plasma (cell) membrane which isolates the fluid within the cell from the fluid that surrounds the cell • Some cells function individually, while mos ...
CELL ORGANELLES I.
... DOUBLE MEMBRANE LAYER, CONTINUOUS WITH ROUGH ENDOPLASMIC RETICULUM NUCLEAR PORES HOLES IN THE DOUBLE MEMBRANE, NUCLEAR PORE COMPLEX, REGULATES TRAFFICKING BETWEEN THE NUCLEUS AND CYTOPLASM (MACROMOLECULES, RNA) NUCLEAR MATRIX DNA (DEOXYRIBONUCLEIC ACID), GENETIC CODE, EU- AND HETEROCHROMATIN RIBONUC ...
... DOUBLE MEMBRANE LAYER, CONTINUOUS WITH ROUGH ENDOPLASMIC RETICULUM NUCLEAR PORES HOLES IN THE DOUBLE MEMBRANE, NUCLEAR PORE COMPLEX, REGULATES TRAFFICKING BETWEEN THE NUCLEUS AND CYTOPLASM (MACROMOLECULES, RNA) NUCLEAR MATRIX DNA (DEOXYRIBONUCLEIC ACID), GENETIC CODE, EU- AND HETEROCHROMATIN RIBONUC ...
document
... ACh binds to receptors on muscle motor end plate opening the gated ion channels so that Na+ can rush into the muscle cell Inside of muscle cell becomes more positive, triggering a muscle action potential that travels over the cell and down the T tubules The release of Ca+2 from the SR is triggered a ...
... ACh binds to receptors on muscle motor end plate opening the gated ion channels so that Na+ can rush into the muscle cell Inside of muscle cell becomes more positive, triggering a muscle action potential that travels over the cell and down the T tubules The release of Ca+2 from the SR is triggered a ...
Ch 6-2 6-3 Notes Labeled
... The Life of a Eukaryotic Cell Eukaryotic cell division is more complex than prokaryotic cell division because o ...
... The Life of a Eukaryotic Cell Eukaryotic cell division is more complex than prokaryotic cell division because o ...
clover leaf answer key 1 and 2
... - Minnesota habitat: cold winters, warm summers, not many herbivores, moderate precipitation - North Carolina habitat: mild winters, hot summers, lots of rainfall, lots of herbivores Part II Exercise 2: a. The two gene products are stored in different parts of the cell so that it takes an extra step ...
... - Minnesota habitat: cold winters, warm summers, not many herbivores, moderate precipitation - North Carolina habitat: mild winters, hot summers, lots of rainfall, lots of herbivores Part II Exercise 2: a. The two gene products are stored in different parts of the cell so that it takes an extra step ...
Cell Transport Practice Answers
... b. Hypotonic: The cell would become turgid because the water molecules would enter the cell c. Isotonic: The cell would become flaccid because the water molecules would have no net movement 18. What would happen to an animal cell in each of the following solutions? a. Hypertonic: The cell would shri ...
... b. Hypotonic: The cell would become turgid because the water molecules would enter the cell c. Isotonic: The cell would become flaccid because the water molecules would have no net movement 18. What would happen to an animal cell in each of the following solutions? a. Hypertonic: The cell would shri ...
Lysosomes - Denver Public Schools
... to break down molecules Broken-down molecules delivered to cytoplasm by membrane proteins for later use ...
... to break down molecules Broken-down molecules delivered to cytoplasm by membrane proteins for later use ...
DO NOW
... How are passive and active transport different? Passive: driven by concentration gradient Active: driven by ATP ...
... How are passive and active transport different? Passive: driven by concentration gradient Active: driven by ATP ...
Eukaryotic Origins
... and outer membranes of cyanobacteria. Like mitochondria, plastids also contain circular genomes and divide by a process reminiscent of prokaryotic cell division. The chloroplasts of red and green algae exhibit DNA sequences that are closely related to photosynthetic cyanobacteria, suggesting that re ...
... and outer membranes of cyanobacteria. Like mitochondria, plastids also contain circular genomes and divide by a process reminiscent of prokaryotic cell division. The chloroplasts of red and green algae exhibit DNA sequences that are closely related to photosynthetic cyanobacteria, suggesting that re ...
Cell membrane File
... half exuded at the same time has the optional capability of the materials entering and leaving through it also contributes in many cases carrier molecules are present within the plasma membrane in the process of the transfer of materials across the membrane of this process and are irrespective of la ...
... half exuded at the same time has the optional capability of the materials entering and leaving through it also contributes in many cases carrier molecules are present within the plasma membrane in the process of the transfer of materials across the membrane of this process and are irrespective of la ...
Outline
... Facilitated diffusion: Diffusion of (normally watersoluble) molecules through a channel or carrier protein. For example, glucose (large non-polar molecule) across cell membrane by channel protein. ...
... Facilitated diffusion: Diffusion of (normally watersoluble) molecules through a channel or carrier protein. For example, glucose (large non-polar molecule) across cell membrane by channel protein. ...
Drugs, Drug Targets and You: Patch Clamping
... the outside (just the reverse of the outside‐out configuration). Inside‐out patches can also be obtained directly without air exposure if the withdrawal is performed in Ca‐free medium. With this configuration, by changing the ionic concentrations in the bathing solution, one can examine the effect ...
... the outside (just the reverse of the outside‐out configuration). Inside‐out patches can also be obtained directly without air exposure if the withdrawal is performed in Ca‐free medium. With this configuration, by changing the ionic concentrations in the bathing solution, one can examine the effect ...
No Slide Title
... When a cell takes in substances through endocytosis, the outside of the cell membrane becomes the inside of the vesicle. What might this suggest about the structure of the cell membrane? Answer: This suggests that the cell membrane’s inner and outer layers have essentially the same structure and are ...
... When a cell takes in substances through endocytosis, the outside of the cell membrane becomes the inside of the vesicle. What might this suggest about the structure of the cell membrane? Answer: This suggests that the cell membrane’s inner and outer layers have essentially the same structure and are ...
Section 3.3 The Cell Membrane
... Some proteins extend through one or both phospholipid layers and help materials cross the membrane. Other proteins are key components of the cytoskeleton. Different cell types have different membrane proteins. Carbohydrates attached to membrane proteins serve as identification tags, enabling cel ...
... Some proteins extend through one or both phospholipid layers and help materials cross the membrane. Other proteins are key components of the cytoskeleton. Different cell types have different membrane proteins. Carbohydrates attached to membrane proteins serve as identification tags, enabling cel ...
Absorption and Secretion
... The Plasma Membrane • One end of a phospholipid molecule is hydrophilic (water loving), this is called the tail. The other end is hydrophobic (water hating), this is called the head. • The hydrophillic heads are water soluble and make up the 2 outer surfaces, where they form bonds with hydrogen mol ...
... The Plasma Membrane • One end of a phospholipid molecule is hydrophilic (water loving), this is called the tail. The other end is hydrophobic (water hating), this is called the head. • The hydrophillic heads are water soluble and make up the 2 outer surfaces, where they form bonds with hydrogen mol ...
Kinesin
... 8 nm per step (spacing of tubulin dimers along the microtubule) = 250 steps/second! Protein head = 7.5 X 4.5 X 4.5 nm ≈ speed and thrust of the supersonic car 60% efficiency ...
... 8 nm per step (spacing of tubulin dimers along the microtubule) = 250 steps/second! Protein head = 7.5 X 4.5 X 4.5 nm ≈ speed and thrust of the supersonic car 60% efficiency ...
Eukaryotic Cell Structures
... Eukaryotic Cell Structures Go to the following website - http://www.cellsalive.com/cells/cell_model.htm Choose animal cell 1. Select nucleus. What makes one cell type different from another cell type? 2. Select nucleolus. What is the function of the nucleolus? 3. Select cytosol. Compare/Contrast cyt ...
... Eukaryotic Cell Structures Go to the following website - http://www.cellsalive.com/cells/cell_model.htm Choose animal cell 1. Select nucleus. What makes one cell type different from another cell type? 2. Select nucleolus. What is the function of the nucleolus? 3. Select cytosol. Compare/Contrast cyt ...
Document
... made largely of cellulose – They connect by plasmodesmata, channels that allow them to share water, food, and chemical messages ...
... made largely of cellulose – They connect by plasmodesmata, channels that allow them to share water, food, and chemical messages ...
6 Kingdom Classification System Graphic Organizer (chapters 16
... Heterotrophic --Few examples of Chemotrophs that can use chemicals such as sulfur to produce energy ...
... Heterotrophic --Few examples of Chemotrophs that can use chemicals such as sulfur to produce energy ...
Part 1: The Paper
... EACH TEAM must create a key for your edible cell model so that others can tell what cell part (organelle) your food represents. Use the pictures of cells and organelles in classroom and online textbooks and any cell notes to help you decide what foods would best represent each cell part. Food items ...
... EACH TEAM must create a key for your edible cell model so that others can tell what cell part (organelle) your food represents. Use the pictures of cells and organelles in classroom and online textbooks and any cell notes to help you decide what foods would best represent each cell part. Food items ...
3.2 Cell Organelles Cells have an internal structure.
... – provides strength – assists in cell division – aids in cell movement • Microtubules and microfiliments Cytosol (cytoplasm) is the fluid, jellylike substance found throughout the cell. ...
... – provides strength – assists in cell division – aids in cell movement • Microtubules and microfiliments Cytosol (cytoplasm) is the fluid, jellylike substance found throughout the cell. ...
organelle in bacillus subtilis
... the endoplasmic reticulum and the nuclear envelope, which Watson considers to be a specialized element of the cytoplasmic membrane system (23). From the electron micrographs of bacterial nuclei (5) we are confident that in these primitive organisms there is no membranous component to delimit the nuc ...
... the endoplasmic reticulum and the nuclear envelope, which Watson considers to be a specialized element of the cytoplasmic membrane system (23). From the electron micrographs of bacterial nuclei (5) we are confident that in these primitive organisms there is no membranous component to delimit the nuc ...
Cellular Transport 2016-2017
... concentration in our blood into a high concentration in the cells of both the teeth and the bones. ...
... concentration in our blood into a high concentration in the cells of both the teeth and the bones. ...
Passive & Active Transport
... 2. Why salt used to preserve organisms so they die 3. Why should you not drink sea water? There are MANY SOLUTES ( molecules ) in salt water – This creates a HYPERTONIC solution DEHYDRATING your body! ...
... 2. Why salt used to preserve organisms so they die 3. Why should you not drink sea water? There are MANY SOLUTES ( molecules ) in salt water – This creates a HYPERTONIC solution DEHYDRATING your body! ...
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)↑ ↑ ↑ ↑ ↑ ↑