Overview of Cell Structure
... Flagella- helps the cell move by using contractile proteins to spin it in a corkscrew motion. Can have one or more and the human sperm cell is an example that uses a flagellum for propulsion. Cilia- shorter hair like structures that are only found in animal cells and have contractile proteins th ...
... Flagella- helps the cell move by using contractile proteins to spin it in a corkscrew motion. Can have one or more and the human sperm cell is an example that uses a flagellum for propulsion. Cilia- shorter hair like structures that are only found in animal cells and have contractile proteins th ...
The Basic Units of Life
... 3) Which organisms have got cell walls around their cells? Circle them. ...
... 3) Which organisms have got cell walls around their cells? Circle them. ...
WHAT LIMITS CELL SIZE
... DIFFUSION: Diffusion is a fast and efficient process over short distances, however becomes slow and inefficient as distance increases Ex: mitochondria at center of very large cell – can’t get necessary nutrients from diffusion ...
... DIFFUSION: Diffusion is a fast and efficient process over short distances, however becomes slow and inefficient as distance increases Ex: mitochondria at center of very large cell – can’t get necessary nutrients from diffusion ...
Year 8 Cell VOCAB
... Single-celled microorganisms, some of which are pathogenic in humans, animals and plants. Singular is bacterium. A selectively permeable membrane surrounding the cell and controlling the entry and exit of materials. Outer structure which provides support and prevents the cell from bursting by the up ...
... Single-celled microorganisms, some of which are pathogenic in humans, animals and plants. Singular is bacterium. A selectively permeable membrane surrounding the cell and controlling the entry and exit of materials. Outer structure which provides support and prevents the cell from bursting by the up ...
Name: #:______
... vocabulary/language of the discipline. Don’t just work towards memorizing the definitions, but rather, think of the words as list of topics you will have to teach someone about in the near future. Write this information on a separate piece of paper so you can organize your thoughts well. Another goo ...
... vocabulary/language of the discipline. Don’t just work towards memorizing the definitions, but rather, think of the words as list of topics you will have to teach someone about in the near future. Write this information on a separate piece of paper so you can organize your thoughts well. Another goo ...
NAME - Issaquah Connect
... 2. List 5 organisms you might find in a pond. Answers vary, possible answers: Daphnia, frog, Lemna, dragonfly, amoeba, paramecium, euglena etc. 3. What is a habitat? A place where an organisms’ needs are met. 4. Describe how your pond changed over time. The leaves and hay broke down, more living thi ...
... 2. List 5 organisms you might find in a pond. Answers vary, possible answers: Daphnia, frog, Lemna, dragonfly, amoeba, paramecium, euglena etc. 3. What is a habitat? A place where an organisms’ needs are met. 4. Describe how your pond changed over time. The leaves and hay broke down, more living thi ...
Turgor Pressure
... Osmosis • Osmosis is the flow of water down its concentration gradient, across a semi-permeable membrane. • This means that it flows from where it is at a higher concentration to where it is at a lower concentration in order to try to equalize the concentration. ...
... Osmosis • Osmosis is the flow of water down its concentration gradient, across a semi-permeable membrane. • This means that it flows from where it is at a higher concentration to where it is at a lower concentration in order to try to equalize the concentration. ...
The Organelles of Cells
... d) What would you consider to be the “POWER PLANT” of the cell? _______________________ e) What would you consider to be the “STORAGE BIN” of the cell? _______________________ f) What would you consider to be the “SOLAR PANNEL” of the cell? ______________________ ...
... d) What would you consider to be the “POWER PLANT” of the cell? _______________________ e) What would you consider to be the “STORAGE BIN” of the cell? _______________________ f) What would you consider to be the “SOLAR PANNEL” of the cell? ______________________ ...
Cell Structure Powerpoint
... -- Peroxisomes – result in hydrogen peroxide, broken down by catalase -- Vacuole -- mainly storage or specific functions (contractile vacuole) -- Plant cells have a CENTRAL VACUOLE - used for storage and help to maintain hydrostatic pressure ...
... -- Peroxisomes – result in hydrogen peroxide, broken down by catalase -- Vacuole -- mainly storage or specific functions (contractile vacuole) -- Plant cells have a CENTRAL VACUOLE - used for storage and help to maintain hydrostatic pressure ...
Document
... Cell Membrane Gatekeeper of the cell Allows substances to move in and out of the cell ...
... Cell Membrane Gatekeeper of the cell Allows substances to move in and out of the cell ...
File
... Mitochondria Convert chemical energy stored in food into compounds that are more convenient for the cell to use Has 2 membranes Inner membrane Lots of FOLDS (cristae)= INCREASE surface area= more ATP being produced ...
... Mitochondria Convert chemical energy stored in food into compounds that are more convenient for the cell to use Has 2 membranes Inner membrane Lots of FOLDS (cristae)= INCREASE surface area= more ATP being produced ...
Cellular Architecture
... past one another • Motor molecules may transport organelles from one area of the cytoplasm to another ...
... past one another • Motor molecules may transport organelles from one area of the cytoplasm to another ...
Cellular Structure
... M. Site of protein production N. Non-living part of a plant cell that provides support O. Green pigment 1n plant cells used in photosynthesis P. Special plastids in plant cells that contain the chlorophyll Q. "Powerhouse" of the cell because it releases energy for the cell's use R. Contain genetic i ...
... M. Site of protein production N. Non-living part of a plant cell that provides support O. Green pigment 1n plant cells used in photosynthesis P. Special plastids in plant cells that contain the chlorophyll Q. "Powerhouse" of the cell because it releases energy for the cell's use R. Contain genetic i ...
Cellular Architecture
... attached to E.R.-proteins for export responsible for translation of mRNA into protein ...
... attached to E.R.-proteins for export responsible for translation of mRNA into protein ...
Plant and Animal cells by: Cody Mills
... Peroxisome is a specialized metabolic compartment bounded by a single membrane. They contain enzymes that transfer hydrogen from various substrates to oxygen. Mitochondria are the organelles that convert energy to forms that cells can use for work. The energy factory of the cell. Nonmembrane organel ...
... Peroxisome is a specialized metabolic compartment bounded by a single membrane. They contain enzymes that transfer hydrogen from various substrates to oxygen. Mitochondria are the organelles that convert energy to forms that cells can use for work. The energy factory of the cell. Nonmembrane organel ...
Welcome to Ms. Looney`s Biology Class
... Cytoplasmic membrane • Since prokaryotic cells lack organelles, this is where most of the cell’s functions happen – Energy production (e- transport chain) ...
... Cytoplasmic membrane • Since prokaryotic cells lack organelles, this is where most of the cell’s functions happen – Energy production (e- transport chain) ...
Passive vs Active Transport
... Facilitated Diffusion • Differentially permeable membrane • Channels (are specific) help molecule or ions enter or leave the cell • Channels usually are transport proteins (aquaporins facilitate the movement of water) • No energy is used ...
... Facilitated Diffusion • Differentially permeable membrane • Channels (are specific) help molecule or ions enter or leave the cell • Channels usually are transport proteins (aquaporins facilitate the movement of water) • No energy is used ...
File
... Peroxisomes, similar to lysosomes, are membrane-bound vesicles that enclose enzymes. • Typically peroxisomes contain enzymes that produce hydrogen peroxide, which is a toxic molecule that is broken down by an enzyme to oxygen and water • Peroxisomes are most prevalent in cells that synthesize and br ...
... Peroxisomes, similar to lysosomes, are membrane-bound vesicles that enclose enzymes. • Typically peroxisomes contain enzymes that produce hydrogen peroxide, which is a toxic molecule that is broken down by an enzyme to oxygen and water • Peroxisomes are most prevalent in cells that synthesize and br ...
Cells
... protection) and chloroplasts (energy producers) and can not make their own food Small vacuole (storage compartment) Some have flagella (tail) & cilia (hairs) which is used for movement. ...
... protection) and chloroplasts (energy producers) and can not make their own food Small vacuole (storage compartment) Some have flagella (tail) & cilia (hairs) which is used for movement. ...
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)↑ ↑ ↑ ↑ ↑ ↑