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cell
cell

... that are the site of photosynthesis. They are composed of on outer boundary membrane and an inner boundary membrane. Within these membranes is an inner compartment called the stroma, Within the stroma are flattened closed sacs called thylakoids. Stacks of these sacs are called grana. The thylakoid m ...
cloze 4
cloze 4

... in that they have their own DNA and divide on their own, like bacteria. Chloroplasts • Chloroplasts are organelles in which photosynthesis takes place. Plants, algae, and some prokaryotes have cells with__________. ...
SBI 4U biochem 3
SBI 4U biochem 3

... • Form from budding off the ER • Catalyze redox reactions • Breaks down some toxic molecules, such as alcohol. ...
lessonuploads/Chapter 1 Section 2 vocab chart HO
lessonuploads/Chapter 1 Section 2 vocab chart HO

... Contain directions for all cells activities ...
Cell part
Cell part

... Contain directions for all cells activities ...
Cell Structure and Function Cells
Cell Structure and Function Cells

... Cell Walls • Found in plants, fungi, & many protists • Surrounds plasma membrane ...
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... Membrane bound structures within the cytoplasm that have specialized functions. ...
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cell jeopardy

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Lecture Outline (in PDF format)

... A. Flagella: motility and chemotaxis ...
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... Bacteria donate Tgl to immobile tgl mutants (green), allowthe exchange might help their ing them to migrate away from the colony edge (red line). pack-like feeding strategy. The hunting bacteria often change direction, mystery, as is its applicability in other syswhich requires the assembly of pili ...
ORGANELLE MATCHING
ORGANELLE MATCHING

... 2. holds water in the plant cell 3. the energy making part of the plant cell/site of photosynthesis 4. the part of the cell that is the genetic information 5. the powerhouse of the cell 6. provides the enzymes for digestion within a cell 7. a double membrane that protects the nucleus 8. synthesizes ...
Test items
Test items

... Vacuoles are derivatives of the endoplasmic reticulum and dictyosomes of the Golgi complex. They are limited by vacuolar protein-lipoid membrane, which is called tonoplast. It provides selective capacity. Vacuoles contain cell sap of different composition or crystalline inclusions aleurone grains (i ...
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Cell Organelles Worksheet

... In what organelle does cellular respiration take place? ...
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Parts of the Cell: Cellular Organelles 1. Nucleus • The central core of

... • Small bag-like structures that allow for the storage and transportation of waste in a cell. In plant cells these are VERY large. They are full of water in plant cells and that keeps plant cells rigid. Vacuoles fuse with the cell membrane to release waste out of the cell. 10. Endoplasmic Reticulum ...
A plant cell consists of many organelles. Each one of them plays its
A plant cell consists of many organelles. Each one of them plays its

... cytoplasm. Cytosol is a major part in the cytoplasm. It has enzymes which take molecules and break them down. This then allows individual organelles to use them when they need to. Plasma Membrane- a plasma membrane is found in all living cells. They regulate the passage of molecules in and out of ce ...
Organelle Notes on structure Function Why partition? Lysosome
Organelle Notes on structure Function Why partition? Lysosome

... itself—producing the next generation of virions. After HIV’s Env protein has been synthesized by a ribosome, it has to enter the endomembrane system so it can be processed and eventually shipped to the host cell’s plasma membrane. Explain how a newly synthesized Env protein can enter the host cell’s ...
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Cell basics & structure

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Investigating Cell Migration Under Microgravity Conditions
Investigating Cell Migration Under Microgravity Conditions

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Ch. 1 - Cell Organelles Worksheet

... a whip-like motion to move the cell. Ex. Sperm cells have a ___ which allow them to swim in the in seminal fluid. ...
Cells Alive- Internet Lesson
Cells Alive- Internet Lesson

... animations then click on animal cell) For this model, you will need to click on the various parts of the cell to go to a screen that tells you about the parts. Answers to the following questions are found there. Sketch each of the following. 1. What do mitochondria do? ...
• SWBAT create and label cell diagrams in order to compare and
• SWBAT create and label cell diagrams in order to compare and

... 3)  Why  do  you  think  only  plants  have  cell  walls?     ...
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Lectures 12, 13 and 14 slides - Rob Phillips Group

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THE CELL
THE CELL

... that traps energy from the sun. _______________ occurs here. ...
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... • Animals have many tiny ones • Plants have a large central vacuole, unique to them • Function: storage of materials. The large central vacuole in plants stores water and helps the plant maintain its shape. ? Why do plants look shriveled when they need water?? ...
Introduction to Organelles
Introduction to Organelles

... • Digests the food particles inside the cell with help of enzymes. These enzymes work at low pH. • Involved in autolysis (suicide of cell) • Digest foreign bacteria that invade a cell • Recycling of membrane components • Repair damage to plasma membrane ...
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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)↑ ↑ ↑ ↑ ↑ ↑
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