Nanosecond electric pulses trigger actin responses in plant cells
... have attracted considerable interest, because they can induce specific cellular responses such as apoptosis [7] that have already been employed for tumour therapy [8]. Due to this large impact, it is necessary to understand the underlying cellular and molecular mechanisms. Plasma membrane charging d ...
... have attracted considerable interest, because they can induce specific cellular responses such as apoptosis [7] that have already been employed for tumour therapy [8]. Due to this large impact, it is necessary to understand the underlying cellular and molecular mechanisms. Plasma membrane charging d ...
Cell membrane - Cobb Learning
... • The first life forms on Earth were likely single-celled prokaryotic organisms. o Prokaryotic organisms are single-celled organisms that do not have a nucleus. • Their DNA or RNA is usually floating freely inside the cell. o Prokaryotic cells also do not have any membrane bound ...
... • The first life forms on Earth were likely single-celled prokaryotic organisms. o Prokaryotic organisms are single-celled organisms that do not have a nucleus. • Their DNA or RNA is usually floating freely inside the cell. o Prokaryotic cells also do not have any membrane bound ...
Cells 4 Quail
... substance across a space is called a concentration gradient. • Equilibrium is a condition in which the concentration of a substance is equal throughout a space. ...
... substance across a space is called a concentration gradient. • Equilibrium is a condition in which the concentration of a substance is equal throughout a space. ...
Cell Analogy Project - Point Source Science
... Create analogies between a plant cell’s parts and another idea of your choice Must be done on poster paper Write a paragraph that explains how your cell analogy could go through one of these processes (we have not covered these topics in class yet which means you need to research what they are and a ...
... Create analogies between a plant cell’s parts and another idea of your choice Must be done on poster paper Write a paragraph that explains how your cell analogy could go through one of these processes (we have not covered these topics in class yet which means you need to research what they are and a ...
exaggeration in all populations. Collectively, these studies suggest that coevolution is a
... coldspots, with selection acting on only one species or neither species. In many interactions, there will often also be regions where one species occurs without the other. These different forms of coevolutionary coldspots will lead to relaxed selection on the traits that are escalating to varying de ...
... coldspots, with selection acting on only one species or neither species. In many interactions, there will often also be regions where one species occurs without the other. These different forms of coevolutionary coldspots will lead to relaxed selection on the traits that are escalating to varying de ...
02471-05.3 Structural Basis of Life
... Bring a tennis ball and two ping pong balls to class. Explain that once a cell reaches the size of the tennis ball it will divide into two cells the size of the ping pong balls. Once the ping pong balls grow to the size of the tennis ball, they will divide again. Discuss with class. Share with stude ...
... Bring a tennis ball and two ping pong balls to class. Explain that once a cell reaches the size of the tennis ball it will divide into two cells the size of the ping pong balls. Once the ping pong balls grow to the size of the tennis ball, they will divide again. Discuss with class. Share with stude ...
Basic Structure of a Cell ppt questions-1
... to form visible __________________. 72. __________ is the hereditary material of the cell. 73. Where is the nucleolus located? 74. Cells may have ___________ nucleoli, but they ____________ when the cell divides and then reappear later. 75. What is the job of the nucleolus? 76. ________________ make ...
... to form visible __________________. 72. __________ is the hereditary material of the cell. 73. Where is the nucleolus located? 74. Cells may have ___________ nucleoli, but they ____________ when the cell divides and then reappear later. 75. What is the job of the nucleolus? 76. ________________ make ...
Plant Hormones - EPTS Biology Intro
... Auxins are a type of hormone that produces cell elongation and allows the plant to grow in length and to develop. The natural Auxin is a compound called indoleacetic acid or IAA ...
... Auxins are a type of hormone that produces cell elongation and allows the plant to grow in length and to develop. The natural Auxin is a compound called indoleacetic acid or IAA ...
Endosymbiosis: Eukaryotes and their Organelles
... each office would help the company run. In organisms with more than one cell, like humans, the cells work together to help the whole body, like in a large company; different sections in different cities help each other. Some cells however are more complex than others. Throughout the history of life, ...
... each office would help the company run. In organisms with more than one cell, like humans, the cells work together to help the whole body, like in a large company; different sections in different cities help each other. Some cells however are more complex than others. Throughout the history of life, ...
Cell Organelles labeling KEY
... Contains the green pigment chlorophyll Site of food (glucose) production = PHOTOSYNTHESIS Bound by a double membrane ...
... Contains the green pigment chlorophyll Site of food (glucose) production = PHOTOSYNTHESIS Bound by a double membrane ...
Some things to consider before we start
... … is a special kind of diffusion that is very important to living things. Osmosis is the diffusion of water through a selectively permeable membrane. This is the manner in which water gets into and out of cells. Animation: How Osmosis Works ...
... … is a special kind of diffusion that is very important to living things. Osmosis is the diffusion of water through a selectively permeable membrane. This is the manner in which water gets into and out of cells. Animation: How Osmosis Works ...
Organelles 1 - Science Freaks
... 5. Plasma Membrane: Cell Membrane: http://projects.edtech.sandi.net/miramesa/Organelles/memb.html It serves as a _______________________ which helps to control ______________________________. Structurally, the membrane is a lipid ______________________________. How many layers does this mean? 6. En ...
... 5. Plasma Membrane: Cell Membrane: http://projects.edtech.sandi.net/miramesa/Organelles/memb.html It serves as a _______________________ which helps to control ______________________________. Structurally, the membrane is a lipid ______________________________. How many layers does this mean? 6. En ...
make proteins - Mr. Le`s Living Environment Webpage
... A. the structure of cell parts to their functions. B. The differences between plant cells and animal cells ...
... A. the structure of cell parts to their functions. B. The differences between plant cells and animal cells ...
Mitochondria - cloudfront.net
... apart. The cell is made up of a lipid bilayer, which is two layers of lipids (fats) that stand foot to foot. It surrounds the cell. A real life example of the cell membrane is a bouncer, door guard, at a club. The bouncer only lets some people into the club, he keeps other people out. Another exampl ...
... apart. The cell is made up of a lipid bilayer, which is two layers of lipids (fats) that stand foot to foot. It surrounds the cell. A real life example of the cell membrane is a bouncer, door guard, at a club. The bouncer only lets some people into the club, he keeps other people out. Another exampl ...
CELL TRANSPORT
... Does not require energy Uses transport proteins to move high to low concentration Examples: Glucose or amino acids moving from blood into a cell. ...
... Does not require energy Uses transport proteins to move high to low concentration Examples: Glucose or amino acids moving from blood into a cell. ...
What is its job?
... •Contains yolk which provides a large food store for the new baby (cell) being formed. ...
... •Contains yolk which provides a large food store for the new baby (cell) being formed. ...
Lectures 6 & 7: Powerpoint
... ATP required (has own binding site) Note movement of particles (Ca++) against their concentration gradient ...
... ATP required (has own binding site) Note movement of particles (Ca++) against their concentration gradient ...
Conclusion Questions: Osmosis In the beginning, there is more
... 14. A CONCENTRATION Gradient forms whenever there is a difference in concentration between one place and another. 15.Pinocytosis, phagocytosis, and Na+-K+ pumps are all kinds of Active transport because they use energy to move substances across membranes. 16. A solution in which the concentration of ...
... 14. A CONCENTRATION Gradient forms whenever there is a difference in concentration between one place and another. 15.Pinocytosis, phagocytosis, and Na+-K+ pumps are all kinds of Active transport because they use energy to move substances across membranes. 16. A solution in which the concentration of ...
HOMEOSTASIS AND TRANSPORT
... of the molecules is the same on both sides of a membrane When a concentration gradient no longer exists, equilibrium has been reached but molecules will continue to move equally back & forth across a membrane ...
... of the molecules is the same on both sides of a membrane When a concentration gradient no longer exists, equilibrium has been reached but molecules will continue to move equally back & forth across a membrane ...
The Animal Cell
... Cytoplasm is the fluid that fills a cell. Scientists used to call the fluid protoplasm. The organelles of the cell are suspended in the cytosol. While you will discover that the microfilaments and microtubules set up a "skeleton" of the cell, the cytosol fills the spaces. The cytoplasm has many diff ...
... Cytoplasm is the fluid that fills a cell. Scientists used to call the fluid protoplasm. The organelles of the cell are suspended in the cytosol. While you will discover that the microfilaments and microtubules set up a "skeleton" of the cell, the cytosol fills the spaces. The cytoplasm has many diff ...
Chapter 3
... function: The cell membrane regulates the movement of substances in and out of the cell, participates in signal transduction, and helps cells adhere to other cells structure: The basic framework of the cell membrane consists of a double layer of __________________, with fatty acid tails turned _____ ...
... function: The cell membrane regulates the movement of substances in and out of the cell, participates in signal transduction, and helps cells adhere to other cells structure: The basic framework of the cell membrane consists of a double layer of __________________, with fatty acid tails turned _____ ...
Keri Bohn Kucich - 18BC1
... Ask students to share their answers of the Do Now. Provide students with index cards of different organelles After brief discussion of organelles, students are to guess which material will be used for their organelle and why. Have all materials laid out for each group, inform students they will be c ...
... Ask students to share their answers of the Do Now. Provide students with index cards of different organelles After brief discussion of organelles, students are to guess which material will be used for their organelle and why. Have all materials laid out for each group, inform students they will be c ...
Microscopy and Cell Structure
... Proton motive force is used to fuel: •Synthesis of ATP (the cell’s energy currency) •Rotation of flagella (motility) •One form of transport ...
... Proton motive force is used to fuel: •Synthesis of ATP (the cell’s energy currency) •Rotation of flagella (motility) •One form of transport ...
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)↑ ↑ ↑ ↑ ↑ ↑