BY1101-AF L1
... • Eukaryotes are more structurally and func7onally complex • Eukaryotes have a membrane – bound nucleus ...
... • Eukaryotes are more structurally and func7onally complex • Eukaryotes have a membrane – bound nucleus ...
BY1101-AF L1
... • General characteris7cs of Eukaryo7c cell structure and func7on • Highlight how eukaryo7c cells differ from prokaryo7c cells • Eukaryo7c cells are more complex than prokaryo7c cells ...
... • General characteris7cs of Eukaryo7c cell structure and func7on • Highlight how eukaryo7c cells differ from prokaryo7c cells • Eukaryo7c cells are more complex than prokaryo7c cells ...
Cell Lecture Notes
... Cell Membrane - forms the outer boundary of the cell and allows only certain materials to move into or out of the cell. Cytoplasm - a gel-like material inside the cell; contains water and nutrients for the cell. Organelles - cell structures that help a cell to function; located in the cytoplasm: Nuc ...
... Cell Membrane - forms the outer boundary of the cell and allows only certain materials to move into or out of the cell. Cytoplasm - a gel-like material inside the cell; contains water and nutrients for the cell. Organelles - cell structures that help a cell to function; located in the cytoplasm: Nuc ...
Cell Lecture Notes
... Cell Membrane - forms the outer boundary of the cell and allows only certain materials to move into or out of the cell. Cytoplasm - a gel-like material inside the cell; contains water and nutrients for the cell. Organelles - cell structures that help a cell to function; located in the cytoplasm: Nuc ...
... Cell Membrane - forms the outer boundary of the cell and allows only certain materials to move into or out of the cell. Cytoplasm - a gel-like material inside the cell; contains water and nutrients for the cell. Organelles - cell structures that help a cell to function; located in the cytoplasm: Nuc ...
Moving Cellular Materials
... The random movement of molecules from a high concentration to a low concentration. (GASES) But what does having a high concentration mean? CLASS DEMO ...
... The random movement of molecules from a high concentration to a low concentration. (GASES) But what does having a high concentration mean? CLASS DEMO ...
Review: diffusion osmosis facilitated diffusion Active Transport (Pg
... this is the process of moving substances against a concentration gradient (this requires energy) ...
... this is the process of moving substances against a concentration gradient (this requires energy) ...
Biology Study Guide
... Amino acid : protein :: simple sugar : starch The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed. Water molecules are polar, with the oxygen side being slightly negative and the hydrogen side being slightly positive. A pro ...
... Amino acid : protein :: simple sugar : starch The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed. Water molecules are polar, with the oxygen side being slightly negative and the hydrogen side being slightly positive. A pro ...
Unit C—Life to Lifestyle
... 23. Scientists look at characteristics to classify an object as living or non-living. State in your own words how you would identify an object as living or non-living. (2 marks) ...
... 23. Scientists look at characteristics to classify an object as living or non-living. State in your own words how you would identify an object as living or non-living. (2 marks) ...
B- Eukaryotic Cell
... Cell types that synthesize large quantities of proteins (e.g., pancreas) have large numbers of ribosomes. ...
... Cell types that synthesize large quantities of proteins (e.g., pancreas) have large numbers of ribosomes. ...
Chapter 7 Cells
... Nucleolus: in the nucleus, no membrane network synthesis of ribosomes. Where formation of ribosomes begins. ...
... Nucleolus: in the nucleus, no membrane network synthesis of ribosomes. Where formation of ribosomes begins. ...
Honors Biology - UNIT 6
... which play a role in photosynthesis, converting light into food energy. These discs are stacked on top of each other to compose a granum, there are many of these stacks, the plural is called grana. These grana are all interconnected by extensions of the discs called lamellae. Surrounding the grana a ...
... which play a role in photosynthesis, converting light into food energy. These discs are stacked on top of each other to compose a granum, there are many of these stacks, the plural is called grana. These grana are all interconnected by extensions of the discs called lamellae. Surrounding the grana a ...
Plant and Animal Cell
... jelly-like substance that fills the cell includes the cytosol (fluid), the organelles, and other life-supporting materials, such as sugar and water ...
... jelly-like substance that fills the cell includes the cytosol (fluid), the organelles, and other life-supporting materials, such as sugar and water ...
2-4cellstructure
... Chloroplasts Chloroplasts are found only in plant cells (and some bacteria). Their function is to capture the sun’s energy and use it to produce food as energy. Their pigments make the plant green. ...
... Chloroplasts Chloroplasts are found only in plant cells (and some bacteria). Their function is to capture the sun’s energy and use it to produce food as energy. Their pigments make the plant green. ...
Cell Organelles Worksheet
... 1. Where photosynthesis takes place 2. Closely stacked, flattened sacs that packages waste for exocytosis 3. The sites of protein synthesis, located on rough ER and in cytoplasm 4. Transports materials within the cell but does not have ribosomes 5. Organelle that manages or controls all the cell fun ...
... 1. Where photosynthesis takes place 2. Closely stacked, flattened sacs that packages waste for exocytosis 3. The sites of protein synthesis, located on rough ER and in cytoplasm 4. Transports materials within the cell but does not have ribosomes 5. Organelle that manages or controls all the cell fun ...
Chp 7 Study Guide File
... way does the image appear to move? 29. Why can you obtain a better image with an electron microscope? Match the following. ---------30. Solute concentration higher outside cell ...
... way does the image appear to move? 29. Why can you obtain a better image with an electron microscope? Match the following. ---------30. Solute concentration higher outside cell ...
Midterm 1 sample-multiple choice section File
... 26. Mitochondria convert energy stored in _____ to forms that the cell can use, principally ATP. a. water b. organic carbon compounds c. chlorophyll d. carbon dioxide 27. The rate of diffusion occurs more rapidly a. with higher concentration gradients. b. at higher temperatures. molecules are involv ...
... 26. Mitochondria convert energy stored in _____ to forms that the cell can use, principally ATP. a. water b. organic carbon compounds c. chlorophyll d. carbon dioxide 27. The rate of diffusion occurs more rapidly a. with higher concentration gradients. b. at higher temperatures. molecules are involv ...
Cell Organelle Review Game
... It is your job as the teacher to set up the main objective of the game before it is played. This game can be modified to fit your needs. You want to highlight what you feel that the students need the most help in. For example, if you are just covering the basic cell organelles and their roles in pla ...
... It is your job as the teacher to set up the main objective of the game before it is played. This game can be modified to fit your needs. You want to highlight what you feel that the students need the most help in. For example, if you are just covering the basic cell organelles and their roles in pla ...
Bacterial Cell Structure Internal Structures Nucleoid DNA
... The three primary shapes in bacteria are coccus (spherical), bacillus (rod-shaped) and spirillum (spiral). Mycoplasma are bacteria that have no cell wall and therefore have no definite shape. periplasmic space (not shown) This cellular compartment is found only in those bacteria that have both an ou ...
... The three primary shapes in bacteria are coccus (spherical), bacillus (rod-shaped) and spirillum (spiral). Mycoplasma are bacteria that have no cell wall and therefore have no definite shape. periplasmic space (not shown) This cellular compartment is found only in those bacteria that have both an ou ...
NAME DATE ______ PERIOD _____
... MULTIPLE CHOICE: Circle all that are TRUE. There may be MORE THAN ONE correct answer. Which of the following is TRUE of a cell membranes? A. Cell membranes allow ALL substances to pass through easily B. It is selectively permeable so only certain molecules can pass through it. C. It acts more like a ...
... MULTIPLE CHOICE: Circle all that are TRUE. There may be MORE THAN ONE correct answer. Which of the following is TRUE of a cell membranes? A. Cell membranes allow ALL substances to pass through easily B. It is selectively permeable so only certain molecules can pass through it. C. It acts more like a ...
Nov 2008 - University of Nottingham
... Sir William Dunn School of Pathology Oxford University In the talk I will describe our studies of Sulfolobus, a hyperthermophilic crenarchaeal genus. In common with other archaea, they have transcription and replication machineries that resemble an ancestral form of the eukaryotic apparatus. The rel ...
... Sir William Dunn School of Pathology Oxford University In the talk I will describe our studies of Sulfolobus, a hyperthermophilic crenarchaeal genus. In common with other archaea, they have transcription and replication machineries that resemble an ancestral form of the eukaryotic apparatus. The rel ...
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)↑ ↑ ↑ ↑ ↑ ↑