Cellular Activities
... The movement of particles from an area where they are crowded to areas where they are less crowded. Does not use any energy from the cell! (no ATP) Particles must be very small (oxygen, water, salt) The Diffusion Applet ...
... The movement of particles from an area where they are crowded to areas where they are less crowded. Does not use any energy from the cell! (no ATP) Particles must be very small (oxygen, water, salt) The Diffusion Applet ...
Myosin-Powered Membrane Compartment Drives Cytoplasmic
... are much less understood. The motor proteins driving streaming are known for Drosophila oocytes [6,14], Caenorhabditis elegans embryos [15] and rapidly moving fish keratocytes [16], whereas the motor cargoes that entrain cytosol are yet to be identified. It has also been proposed that the Arp2/3-dep ...
... are much less understood. The motor proteins driving streaming are known for Drosophila oocytes [6,14], Caenorhabditis elegans embryos [15] and rapidly moving fish keratocytes [16], whereas the motor cargoes that entrain cytosol are yet to be identified. It has also been proposed that the Arp2/3-dep ...
The Cell Name: Date: 1. Which organelle is primarily
... Molecules that are too large to pass through the pores of a cell membrane may enter the cell by a process known as A. ...
... Molecules that are too large to pass through the pores of a cell membrane may enter the cell by a process known as A. ...
A13-Cell Membrane and Transport
... inward. These lipids are called phospholipids. Their heads are hydrophilic (attracted to water) and tails are hydrophobic (repel water). ...
... inward. These lipids are called phospholipids. Their heads are hydrophilic (attracted to water) and tails are hydrophobic (repel water). ...
Cell Brochure
... membrane lets them in; these materials may go to the ribosomes where they are used to make proteins and are then are finished by the endoplasmic reticulum and packaged by the Golgi body to be sent where they are needed in the cell. The Task: In this project, you get to be creative. You and your part ...
... membrane lets them in; these materials may go to the ribosomes where they are used to make proteins and are then are finished by the endoplasmic reticulum and packaged by the Golgi body to be sent where they are needed in the cell. The Task: In this project, you get to be creative. You and your part ...
MULTIPLE CHOICE. There are 60 questions on this exam. All
... C) Both A & B are correct D) None of the choices are correct. 34) The cholesterol associated with cell membranes A) is attached to membrane proteins and extends into the watery environment surrounding the cell. B) helps to stabilize the cell membrane at higher or lower temperature. C) is an abnormal ...
... C) Both A & B are correct D) None of the choices are correct. 34) The cholesterol associated with cell membranes A) is attached to membrane proteins and extends into the watery environment surrounding the cell. B) helps to stabilize the cell membrane at higher or lower temperature. C) is an abnormal ...
Study Guide: Cell Parts
... S7L2: Students will describe the structure and function of eukaryotic cells, tissues, organs, and organ systems. Element B: Relate Cell structures (Cell Membrane, Nucleus, Cytoplasm, Chloroplasts, Mitochondria) to basic cell ...
... S7L2: Students will describe the structure and function of eukaryotic cells, tissues, organs, and organ systems. Element B: Relate Cell structures (Cell Membrane, Nucleus, Cytoplasm, Chloroplasts, Mitochondria) to basic cell ...
Cell Structure Notes
... "Powerhouse of the cell" - cellular metabolism Structure- outer and inner membranes, cristae Found in both plant and animal cells Very active cells have more mitochondria ...
... "Powerhouse of the cell" - cellular metabolism Structure- outer and inner membranes, cristae Found in both plant and animal cells Very active cells have more mitochondria ...
Cell Structure & Function - Lake Stevens High School
... Lipids and proteins are assembled for export from the cell. http://library.thinkquest.org/12413/structures.html ...
... Lipids and proteins are assembled for export from the cell. http://library.thinkquest.org/12413/structures.html ...
NAME
... 2) Describe the structure and breakdown of ATP. ATP contains an adenine, ribose (sugar), and three phosphate groups, when the 3rd phosphate is removed, energy is released, when the 3rd phosphate is added, energy is stored 3) Describe the order of steps in cellular respiration Glycolysis, krebs cycle ...
... 2) Describe the structure and breakdown of ATP. ATP contains an adenine, ribose (sugar), and three phosphate groups, when the 3rd phosphate is removed, energy is released, when the 3rd phosphate is added, energy is stored 3) Describe the order of steps in cellular respiration Glycolysis, krebs cycle ...
LE-#9-10-Cell Theory and Cell Organelles.notebook
... • Virus: contain genetic material however do not contain cell material needed for reproduction, metabolism and growth. (Can't reproduce without host) ...
... • Virus: contain genetic material however do not contain cell material needed for reproduction, metabolism and growth. (Can't reproduce without host) ...
Aida.Membranes
... Ligans is a molecule that binds to the receptor site of another molecule. 17. Contrast the following terms: phagocytosis, pinocytosis and receptor-mediated endocytosis. Phagocytosis- a form of endocytosis in which larger molecules such as bacteria are surrounded by a vesicle. Pinocytosis- a form of ...
... Ligans is a molecule that binds to the receptor site of another molecule. 17. Contrast the following terms: phagocytosis, pinocytosis and receptor-mediated endocytosis. Phagocytosis- a form of endocytosis in which larger molecules such as bacteria are surrounded by a vesicle. Pinocytosis- a form of ...
Protists
... muscle cells, as well as tissues and organs. All protists are eukaryotes, organisms that have cells with a nucleus and organelles. Most unicellular protists are microscopic. Many are described as animal-like because they do not make their own food and can move independently. ...
... muscle cells, as well as tissues and organs. All protists are eukaryotes, organisms that have cells with a nucleus and organelles. Most unicellular protists are microscopic. Many are described as animal-like because they do not make their own food and can move independently. ...
2017 Cell Processes Test Study Guide
... osmosis 12. Summarize what you learned from the Carrot Osmosis Lab. Tap water resulted in an increase in both mass and circumference of the carrots because water entered the cells from high to low concentration through the process of osmosis. Exposure to salt water resulted in a decrease in both mas ...
... osmosis 12. Summarize what you learned from the Carrot Osmosis Lab. Tap water resulted in an increase in both mass and circumference of the carrots because water entered the cells from high to low concentration through the process of osmosis. Exposure to salt water resulted in a decrease in both mas ...
Chap 03 Study Outline
... Passive Transport: Mechanisms of movement across the membrane may be passive, requiring no energy from the cell (diffusion, facilitated diffusion, osmosis, and filtration). Is a cell required for these mechanisms to occur? Diffusion: Movement from an area of ___________ concentration to area of ____ ...
... Passive Transport: Mechanisms of movement across the membrane may be passive, requiring no energy from the cell (diffusion, facilitated diffusion, osmosis, and filtration). Is a cell required for these mechanisms to occur? Diffusion: Movement from an area of ___________ concentration to area of ____ ...
Active transport.
... - And Pass water and other water-soluble molecules through watery channels, they are selectively permeable and opened or closed by gates. -Occurs down an electrochemical gradient(downhill) which is the net movement of molecules through the cell membrane along chemical or electrical gradients . -Mole ...
... - And Pass water and other water-soluble molecules through watery channels, they are selectively permeable and opened or closed by gates. -Occurs down an electrochemical gradient(downhill) which is the net movement of molecules through the cell membrane along chemical or electrical gradients . -Mole ...
A View of the Cell - OCVTS.org | Ocean County Vocational
... – Toluidine blue-cell boundaries and nuclei – Fluorescent-give off light of a particular color when viewed under specific wavelengths of light. • Fluorescence microscopy-identify locations of molecules and watch movement. ...
... – Toluidine blue-cell boundaries and nuclei – Fluorescent-give off light of a particular color when viewed under specific wavelengths of light. • Fluorescence microscopy-identify locations of molecules and watch movement. ...
Biology notes 10-09-07 through 10-15-07
... A human skin cell has about 50 mitochondria. A rat liver cell has about 2500 mitochondria. The rat liver cell is much more active because it works much harder. Function: These enzymes break up chemical substances and create chemical reactions that provide energy for the cell to live. “the powerhouse ...
... A human skin cell has about 50 mitochondria. A rat liver cell has about 2500 mitochondria. The rat liver cell is much more active because it works much harder. Function: These enzymes break up chemical substances and create chemical reactions that provide energy for the cell to live. “the powerhouse ...
Prokaryotic Cells
... developed into larger more complex organisms. • Eukaryotes are cells that contain a nucleus and organelles surrounded by a membrane, such as mitochondria and chloroplasts. ...
... developed into larger more complex organisms. • Eukaryotes are cells that contain a nucleus and organelles surrounded by a membrane, such as mitochondria and chloroplasts. ...
Cells - Tuckahoe Common School District
... • Lysosomes are the “clean up crew” of the cell. • Lysosomes are involved in the digestive process of the cell. – Enzymes break down large food into smaller bits for the mitochondria to use. – Lysosomes are not common in plant cells. ...
... • Lysosomes are the “clean up crew” of the cell. • Lysosomes are involved in the digestive process of the cell. – Enzymes break down large food into smaller bits for the mitochondria to use. – Lysosomes are not common in plant cells. ...
Cell Transport Notes - Thunderbird High School
... Concentration Gradient: The ________________ in concentration of molecules across a space When molecules go from _______ concentration to _____ concentration, they are said to be moving __________ the concentration gradient ...
... Concentration Gradient: The ________________ in concentration of molecules across a space When molecules go from _______ concentration to _____ concentration, they are said to be moving __________ the concentration gradient ...
Ribosomes translate the genetic message from mRNA that
... The mass of the protoplasm is divided into two components: o Cytoplasm which lies between the cell membrane and nuclear membrane, it constitutes the main bulk of protoplasm o The nucleoplasm which fills the nucleus. These plasms are colloid or (Semi fluid) and fluctuate between gel and sol condition ...
... The mass of the protoplasm is divided into two components: o Cytoplasm which lies between the cell membrane and nuclear membrane, it constitutes the main bulk of protoplasm o The nucleoplasm which fills the nucleus. These plasms are colloid or (Semi fluid) and fluctuate between gel and sol condition ...
Cell City Answers
... chlorophyll. It captures the sun’s energy and uses it to produces sugars in a process called photosynthesis. a. What company or place does the chloroplast resemble in a Cell City? Solar Power Plant b. Why do you think so? The chloroplast captures the sun’s energy and uses it to produces sugars which ...
... chlorophyll. It captures the sun’s energy and uses it to produces sugars in a process called photosynthesis. a. What company or place does the chloroplast resemble in a Cell City? Solar Power Plant b. Why do you think so? The chloroplast captures the sun’s energy and uses it to produces sugars which ...
name______________________ date_________
... Chapter 2.2 Test Review: Cell Membrane & Cell Transport - KEY The cell membrane is also called the PLASMA membrane and is made of a phospholipid BILAYER. The phospholipids have a hydrophilic (water attracting) HEAD and two hydrophobic (water repelling) TAILS. The head of a phospholipid is made of an ...
... Chapter 2.2 Test Review: Cell Membrane & Cell Transport - KEY The cell membrane is also called the PLASMA membrane and is made of a phospholipid BILAYER. The phospholipids have a hydrophilic (water attracting) HEAD and two hydrophobic (water repelling) TAILS. The head of a phospholipid is made of an ...
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)↑ ↑ ↑ ↑ ↑ ↑