Cell Structure 4A
... two main forms of passive transport: (1) diffusion: the movement of molecules from an area of higher concentration to an area of lower concentration diffusion can be accelerated by such things as heat, movement, and pressure diffusion will continue until the relative number of molecules is equal in ...
... two main forms of passive transport: (1) diffusion: the movement of molecules from an area of higher concentration to an area of lower concentration diffusion can be accelerated by such things as heat, movement, and pressure diffusion will continue until the relative number of molecules is equal in ...
Photosynthesis
... Where Photosynthesis Happens • The chloroplast is the organelle where photosynthesis occurs. Chloroplasts have thin membranes / large surface area for absorption of light. • The organelle is surrounded by a double membrane (membranes are thin for rapid diffusion, and with a large surface area for ab ...
... Where Photosynthesis Happens • The chloroplast is the organelle where photosynthesis occurs. Chloroplasts have thin membranes / large surface area for absorption of light. • The organelle is surrounded by a double membrane (membranes are thin for rapid diffusion, and with a large surface area for ab ...
Science Trivia First Nine Weeks
... 5.4b If you combine sugar and water, the sugar will dissolve into the water. This type of combination is called a — a. molecule. b. solution. c. suspension. d. compound. ...
... 5.4b If you combine sugar and water, the sugar will dissolve into the water. This type of combination is called a — a. molecule. b. solution. c. suspension. d. compound. ...
The Cytoskeleton - Dr. Salah A. Martin
... locomotion for the cells (e.g., sperm) or move fluid past the cells (e.g., ciliated epithelial cells that line our air passages and move a film of mucus towards the throat). Both cilia and flagella have the same basic structure. If the cell has many short ones, we call them cilia or only one or a fe ...
... locomotion for the cells (e.g., sperm) or move fluid past the cells (e.g., ciliated epithelial cells that line our air passages and move a film of mucus towards the throat). Both cilia and flagella have the same basic structure. If the cell has many short ones, we call them cilia or only one or a fe ...
PROKARYOTE VS EUKARYOTE
... CELL TYPES • Look at the pictures on slide 2 and describe the features that are different between the two cells. ...
... CELL TYPES • Look at the pictures on slide 2 and describe the features that are different between the two cells. ...
The Cell Membrane
... membrane without assistance if they are moving from high to low areas of concentration. All other types of particles need some sort of assistance, such as a protein channel in order to pass across the cell membrane. ...
... membrane without assistance if they are moving from high to low areas of concentration. All other types of particles need some sort of assistance, such as a protein channel in order to pass across the cell membrane. ...
Biology Discussion Points
... water, the water is pumped into the vacuole. When the vacuole is full, it expels the water through a pore in the cytoplasm which can be opened and closed. Other protists, such as Amoeba, have contractile vacuoles that move to the surface of the cell when full and undergo exocytosis. In amoeba contra ...
... water, the water is pumped into the vacuole. When the vacuole is full, it expels the water through a pore in the cytoplasm which can be opened and closed. Other protists, such as Amoeba, have contractile vacuoles that move to the surface of the cell when full and undergo exocytosis. In amoeba contra ...
Cell Organelles - Mr. Brown`s RCMS Seventh Grade Science
... Cell membrane: wall of stadium, gates Cytoplasm: everything inside the stadium. Nucleus: the control room for the stadium. ...
... Cell membrane: wall of stadium, gates Cytoplasm: everything inside the stadium. Nucleus: the control room for the stadium. ...
Cell Project Choice Board - Oxford Preparatory Academy
... with characters. they do in a cell. The story must tell about a cell’s Your poem, rap, or song should rhyme. organelles and structures and their functions. Your song, poem, or rap must be recorded and able to be presented using a chromebook. 5. Compare Cells to People 6. Cell Video Write a s ...
... with characters. they do in a cell. The story must tell about a cell’s Your poem, rap, or song should rhyme. organelles and structures and their functions. Your song, poem, or rap must be recorded and able to be presented using a chromebook. 5. Compare Cells to People 6. Cell Video Write a s ...
Chapter 12 Section 2 - Woodland Hills School District
... The Origins of Mitochondria and Chloroplasts • The following four observations support the idea that mitochondria and chloroplasts descended from bacteria: 3. Mitochondrial and chloroplast ribosomes have a size and structure similar to the size and structure of bacterial ribosomes. 4. Like bacteria ...
... The Origins of Mitochondria and Chloroplasts • The following four observations support the idea that mitochondria and chloroplasts descended from bacteria: 3. Mitochondrial and chloroplast ribosomes have a size and structure similar to the size and structure of bacterial ribosomes. 4. Like bacteria ...
Chapter 6 – A Tour of the Cell
... 1. Microtubules Contained in all eukaryotic cells, hollow rods that are comprised of a dimer called tubulin. Tubulin can assemble and disassemble. Microtubules shape and support the cell and also serve as tracks along organelles with motor proteins can move. Centrosomes and Centrioles Microtubules g ...
... 1. Microtubules Contained in all eukaryotic cells, hollow rods that are comprised of a dimer called tubulin. Tubulin can assemble and disassemble. Microtubules shape and support the cell and also serve as tracks along organelles with motor proteins can move. Centrosomes and Centrioles Microtubules g ...
Lab. 2 Cell Division 1. Mitosis Division
... The advantage of having three phases in interphase is that it allows time to check that things are happening as they should. Three checkpoints exist during interphase, during which the cell makes sure that everything has gone as planned and, if needed, fixes errors. The G1-S checkpoint at the end of ...
... The advantage of having three phases in interphase is that it allows time to check that things are happening as they should. Three checkpoints exist during interphase, during which the cell makes sure that everything has gone as planned and, if needed, fixes errors. The G1-S checkpoint at the end of ...
7-2.1 - S2TEM Centers SC
... In 5th grade (5-2.1), students recalled that the smallest unit of life was the cell and identified its major structures (including cell membrane, cytoplasm, nucleus, and vacuole). In 6th grade (6-2.1), students summarized the characteristics that all organisms share (including the obtainment and use ...
... In 5th grade (5-2.1), students recalled that the smallest unit of life was the cell and identified its major structures (including cell membrane, cytoplasm, nucleus, and vacuole). In 6th grade (6-2.1), students summarized the characteristics that all organisms share (including the obtainment and use ...
Cell Structure & Function
... membrane • The nucleus contains nearly all the cell's DNA and with it the coded instructions for making proteins and other important molecules. ...
... membrane • The nucleus contains nearly all the cell's DNA and with it the coded instructions for making proteins and other important molecules. ...
Section 7–1 Life Is Cellular (pages 169–173)
... 1. What are the functions of the cell membrane? It regulates what enters and leaves the cell and also provides protection and support. ...
... 1. What are the functions of the cell membrane? It regulates what enters and leaves the cell and also provides protection and support. ...
Cell Structure Vocabulary
... to help a cell grow, thrive, and reproduce. Chromosomes are made up of DNA. You will find the chromosomes and genetic material in the nucleus of a cell. In prokaryotic, DNA floats in the cytoplasm in an area called the nucleoid. ...
... to help a cell grow, thrive, and reproduce. Chromosomes are made up of DNA. You will find the chromosomes and genetic material in the nucleus of a cell. In prokaryotic, DNA floats in the cytoplasm in an area called the nucleoid. ...
Cell processes to maintain Homeostasis
... F. Kinetic energy keeps molecules in constant motion causing the molecules to move randomly away from each other in a liquid or a gas G. The rate of diffusion depends on temperature, size of the molecules, & type of molecules diffusing H. Molecules diffuse faster at higher temperatures than at lower ...
... F. Kinetic energy keeps molecules in constant motion causing the molecules to move randomly away from each other in a liquid or a gas G. The rate of diffusion depends on temperature, size of the molecules, & type of molecules diffusing H. Molecules diffuse faster at higher temperatures than at lower ...
discov5_lecppt_Ch07
... packaged into transport vesicles that fuse with the plasma membrane and expel the contents into their surrounding in a process called exocytosis • Endocytosis brings substances into the cell by wrapping them in a section of the plasma membrane that eventually breaks free inside the cell ...
... packaged into transport vesicles that fuse with the plasma membrane and expel the contents into their surrounding in a process called exocytosis • Endocytosis brings substances into the cell by wrapping them in a section of the plasma membrane that eventually breaks free inside the cell ...
Chapters 4 and 5 Cell Structures, Functions and Transport
... traps energy from the sun to produce food for the plant cell ...
... traps energy from the sun to produce food for the plant cell ...
Here
... Instructions: You will work in pairs or alone to produce a poster with a diagram of a cell that includes all the cell organelles listed on the next page. Choose your list of organelles based upon whether you want to make a poster of a plant cell or an animal cell (for this assignment, each has the s ...
... Instructions: You will work in pairs or alone to produce a poster with a diagram of a cell that includes all the cell organelles listed on the next page. Choose your list of organelles based upon whether you want to make a poster of a plant cell or an animal cell (for this assignment, each has the s ...
5. Academic Bio Cell as a City Lab Activity
... a) ____________________________________________________________ b) ___________________________________________________________ ____________________________________________________________ ____________________________________________________________ ___________________________________________________ ...
... a) ____________________________________________________________ b) ___________________________________________________________ ____________________________________________________________ ____________________________________________________________ ___________________________________________________ ...
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)↑ ↑ ↑ ↑ ↑ ↑