Cell and its organelles
... lysosomes but contain chemical machinery which uses oxygen to oxidise various potentially toxic substances. This leads to formation of hydrogen peroxide (H2O2) which in high concentrations is itself toxic to cells. In order to degrade H2O2 peroxysomes contain large amounts of an enzyme called catala ...
... lysosomes but contain chemical machinery which uses oxygen to oxidise various potentially toxic substances. This leads to formation of hydrogen peroxide (H2O2) which in high concentrations is itself toxic to cells. In order to degrade H2O2 peroxysomes contain large amounts of an enzyme called catala ...
A View of the Cell
... Eukaryotic cells – these cells do have a nucleus, they do have organelles attached to the membrane. These cells can be much larger than prokaryotic cells. An organelle is a specialized structure in a cell that carries out a specific function. A “little organ.” ...
... Eukaryotic cells – these cells do have a nucleus, they do have organelles attached to the membrane. These cells can be much larger than prokaryotic cells. An organelle is a specialized structure in a cell that carries out a specific function. A “little organ.” ...
membranes
... • Separate cell contents from the external environment • Separating cell components from cytoplasm • Cell recognition and signalling • Holding the components of some metabolic pathways in place • Regulating the transport of materials in and out of cells ...
... • Separate cell contents from the external environment • Separating cell components from cytoplasm • Cell recognition and signalling • Holding the components of some metabolic pathways in place • Regulating the transport of materials in and out of cells ...
Science 10 Biology Review
... If a cell was very large, its Surface Area/Volume Ratio would be quite (high/low)________ When this is true, it means that the cell (does/doesn’t) ______________________ have enough ability to absorb the nutrients it needs and to get rid of waste materials. ...
... If a cell was very large, its Surface Area/Volume Ratio would be quite (high/low)________ When this is true, it means that the cell (does/doesn’t) ______________________ have enough ability to absorb the nutrients it needs and to get rid of waste materials. ...
Cell Structures
... Contains chlorophyll, a green pigment that traps energy from sunlight and gives plants their green color Digests excess or worn-out cell parts, food particles and invading viruses or bacteria Small bumps located on portions of the endoplasmic reticulum Provides temporary storage of food, enzymes and ...
... Contains chlorophyll, a green pigment that traps energy from sunlight and gives plants their green color Digests excess or worn-out cell parts, food particles and invading viruses or bacteria Small bumps located on portions of the endoplasmic reticulum Provides temporary storage of food, enzymes and ...
9 Week Benchmark Study Guide Fill-In
... 13. What is the importance of the cell membrane? It is “selectively permeable” allowing only certain molecules to pass through 14. What happens if you place a cell in a hypertonic solution? Be specific! The solute concentration increases, the water decreases, and the cell will shrink 15. What happen ...
... 13. What is the importance of the cell membrane? It is “selectively permeable” allowing only certain molecules to pass through 14. What happens if you place a cell in a hypertonic solution? Be specific! The solute concentration increases, the water decreases, and the cell will shrink 15. What happen ...
Dynamic Plant – BI 103
... Rules of scientific names and examples. i.e. Genus species. Family levels. Parts of a microscope and how do you obtain magnification level? Know the types of microscopes and what each can view e.g. SEM, light & TEM. Parts of a cell – structures/organelles & their respective functions. Understand dif ...
... Rules of scientific names and examples. i.e. Genus species. Family levels. Parts of a microscope and how do you obtain magnification level? Know the types of microscopes and what each can view e.g. SEM, light & TEM. Parts of a cell – structures/organelles & their respective functions. Understand dif ...
Eukaryote PowerPoint
... Functions in the collection, packaging, modification, and distribution of materials synthesized in the cell One side is always close to the rough ER (cis side) receiving products from the ER Movement occurs to discharge the product from the opposite (trans) side. Small sacs, called vesicles, can be ...
... Functions in the collection, packaging, modification, and distribution of materials synthesized in the cell One side is always close to the rough ER (cis side) receiving products from the ER Movement occurs to discharge the product from the opposite (trans) side. Small sacs, called vesicles, can be ...
Unit 1: The Cell Review
... Which of the following contains a nucleus? a. prokaryotes c. eukaryotes b. bacteria d. organelles The main function of the cell wall is to a. support and protect the cell. c. direct the activities of the cell. b. store DNA. d. help the cell move. Which of the following is a function of the nucleus? ...
... Which of the following contains a nucleus? a. prokaryotes c. eukaryotes b. bacteria d. organelles The main function of the cell wall is to a. support and protect the cell. c. direct the activities of the cell. b. store DNA. d. help the cell move. Which of the following is a function of the nucleus? ...
Study Guide for Exam I-DOC
... Battisto, & Joseph Curtis) previously enrolled in BOT 1103. These students were just like you and had no more insight into the upcoming test than any other student. This study guide was prepared based on lecture notes, the notes available online, the power point presentations given in class, and fro ...
... Battisto, & Joseph Curtis) previously enrolled in BOT 1103. These students were just like you and had no more insight into the upcoming test than any other student. This study guide was prepared based on lecture notes, the notes available online, the power point presentations given in class, and fro ...
Chp. 7 PP cells
... Rough ER: the portion involved in protein synthesis; ribosomes are found on its _________. Smooth ER: ribosomes are not found on the surface; may contain specialized enzymes in certain cell types. ...
... Rough ER: the portion involved in protein synthesis; ribosomes are found on its _________. Smooth ER: ribosomes are not found on the surface; may contain specialized enzymes in certain cell types. ...
The World of Cells
... around in the cytoplasm and perform activities to keep the cell alive • Bacteria cells do NOT have organelles ...
... around in the cytoplasm and perform activities to keep the cell alive • Bacteria cells do NOT have organelles ...
HB Cell Structure
... membrane bilayer shows fluid behavior molecules of the bilayer are in constant motion ...
... membrane bilayer shows fluid behavior molecules of the bilayer are in constant motion ...
Cell Membrane and Organelle Webquest
... 4. Play the small movie. 5. Hypotonic solutions contains a concentration of solute when compared to another solution. 6. When a cell is placed in a hypotonic solution, what happens to the cell? 7. Play the small movie. 8. Isotonic solutions contain the concentration of solute. Website #3: Find your ...
... 4. Play the small movie. 5. Hypotonic solutions contains a concentration of solute when compared to another solution. 6. When a cell is placed in a hypotonic solution, what happens to the cell? 7. Play the small movie. 8. Isotonic solutions contain the concentration of solute. Website #3: Find your ...
Single-Celled Organisms
... Single-Celled Organisms (*The ones we are looking at are found in freshwater ponds/streams) Mrs. LeMay ...
... Single-Celled Organisms (*The ones we are looking at are found in freshwater ponds/streams) Mrs. LeMay ...
cells and organelles
... Chloroplasts are elongated or disc-shaped organelles containing chlorophyll that trap sunlight for energy. Photosynthesis (in which energy from sunlight is converted into chemical energy - food) takes place in the chloroplasts. Only plant cells, not animal cells, can make their own food. Cells also ...
... Chloroplasts are elongated or disc-shaped organelles containing chlorophyll that trap sunlight for energy. Photosynthesis (in which energy from sunlight is converted into chemical energy - food) takes place in the chloroplasts. Only plant cells, not animal cells, can make their own food. Cells also ...
Cell Review Notes
... Made up of ribosomal RNA (rRNA) and protein, are not enclosed in a membrane. Site of protein synthesis. Found attached to rough endoplasmic reticulum or free floating in cytoplasm. attached ribosomes - produce proteins for export (exocytosis) out of cell free ribosomes - produce proteins to be used ...
... Made up of ribosomal RNA (rRNA) and protein, are not enclosed in a membrane. Site of protein synthesis. Found attached to rough endoplasmic reticulum or free floating in cytoplasm. attached ribosomes - produce proteins for export (exocytosis) out of cell free ribosomes - produce proteins to be used ...
Cells and organelles 1. Name the type of cell below Animal cell 2
... A group of similar cells A group of tissues A group of organs Glandular Muscular Epithelial Contracts to churn food with digestive juices Covers the outside and the inside of the stomach ...
... A group of similar cells A group of tissues A group of organs Glandular Muscular Epithelial Contracts to churn food with digestive juices Covers the outside and the inside of the stomach ...
Lab: Cells Alive
... 2. What makes the plant cells green? 3. In plant cells, what does the vacuole do? Part E: Overview For the chart below, place a check in the box if the cell has that component. Plant Chloroplast Vacuole ...
... 2. What makes the plant cells green? 3. In plant cells, what does the vacuole do? Part E: Overview For the chart below, place a check in the box if the cell has that component. Plant Chloroplast Vacuole ...
organelles
... shape, structure, support, and protection • Surrounds the cell membrane • Allows H2O, O2, and CO2, to pass in and out of the cell ...
... shape, structure, support, and protection • Surrounds the cell membrane • Allows H2O, O2, and CO2, to pass in and out of the cell ...
The Cell - Education Service Center, Region 2
... function – used to store water, food or waste. In plant cells, they help keep the plant from wilting. ...
... function – used to store water, food or waste. In plant cells, they help keep the plant from wilting. ...
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)↑ ↑ ↑ ↑ ↑ ↑