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Turgor Pressure Pages 32
Turgor Pressure Pages 32

... 1) When the cell fills with water, what happen to the cell wall? The water fills the vacuoles and cytoplasm, causing them to swell up and push against the cell wall. 2) What does turgor pressure do for plants? Water pressure in a plant cell that pushes the cytoplasm against the non-living cell wall, ...
Microscope Use and Cell Observation
Microscope Use and Cell Observation

... several different types of internal structure. Prokaryotic cells (bacteria) have a nuclear region but no internal membrane system and are very tiny. Eukaryotic cells (protists, fungi, plants, animals) are usually larger, contain a nucleus and have several internal membrane bound structures called or ...
Resting potential - Neurons in Action
Resting potential - Neurons in Action

... Answer all underlined questions. You can answer them directly on this worksheet. Plots should be drawn on separate sheets of paper. In the Panel and Graph Manager window, press the button that says “K conductance only”. This will set the conductance to zero for all ions but potassium. In this simula ...
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... There are 20 amino acids that chemically bond in various ways to make proteins. Twelve of these amino acids are made in the body; others must be consumed from foods such as nuts, beans, or meat. ...
Mitosis: Cell division
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... Here is a quick visual review of the ordinary process of cell division. The ordinary eukaryotic cell has a nucleus containing several pairs of chromosomes. Each chromosome determines specific characteristics of the individual, such as eye-color, ear shape, and hair curl, while the chromosome configu ...
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L-osmosis in cells online

... 1. In the winter, icy roads are often salted to remove the ice and make them less slippery. Grasses and other herbaceous plants often die near the side of these roads. What causes this to happen? ...
Cell Injury and Necrosis - Website of Neelay Gandhi
Cell Injury and Necrosis - Website of Neelay Gandhi

... iii. Irreversible changes: membrane rupture, dispersal of organelles; breakdown of lysosomes; activation of inflammatory response b. In some cases, the mechanism of action is very well defined: Cyanide inactivates cytochrome oxidase c. Most agents cause damage by direct insult to one or more major o ...
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CHAPTER 3: CELLS

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The Dynami(n)cs of Cell Corpse Engulfment

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1. The production of the genetically engineered “golden rice”... developing nations, especially in South-East Asia, because:

... C. active transport of water from xylem vessels into leaf cells. D. higher water potential in leaf cells as compared to root cells. E. active transport of water into xylem vessels. 30. Suppose a plant cell had a mutation that prevented the Golgi apparatus from functioning. Which of the following pro ...
Crossing Membranes – Passive Processes
Crossing Membranes – Passive Processes

... bilayer. E.g. O2, CO2 and steroid hormones • Other very small charged particles like water and small ions can also diffuse directly through the lipid bilayer. ...
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Chapter 3 Review Packet
Chapter 3 Review Packet

... Plants, animals, and some single-celled organisms are eukaryotes. Eukaryotic cells have an organized internal structure and organelles that are surrounded by membranes. Organelles look different from each other and have different functions. Several have a specific job in making and processing protei ...
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Shrinky Dink cells

... quickly, you can put it back in the oven for 2-3 minutes to re-flatten it and then twist or shape it again. ...
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Development of an intermediate layer for application to multi

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BioH Control over Genes Ch14

... (E.coli and glucose) E. Coli pays far more attention to glucose than to lactose, producing more enzymes for glucose digestion and at a much faster rate. In fact, the lactose operon isn’t used much – unless glucose is absent. When no glucose is present in the bacterium, CAP, an activator protein, act ...
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BIOLOGY
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... A. These are cellular particles made of ribosomal RNA, rRNA, and proteins. (These are not organelles… as all cell types have them so that all cells can make proteins and enzymes.) B. These are the sites of Protein Synthesis. (These are like an actual construction site for a building, except they mak ...
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Prentice Hall Science Explorer Cells and Heredity

... • cell wall - a rigid layer of nonliving material that surrounds the cells of plants and some other organisms. – Helps to protect and support the cell – Made mostly of cellulose (a strong material) – Allows some materials (such as water and oxygen) to pass through ...
Prentice Hall Science Explorer Cells and Heredity
Prentice Hall Science Explorer Cells and Heredity

... • cell wall - a rigid layer of nonliving material that surrounds the cells of plants and some other organisms. – Helps to protect and support the cell – Made mostly of cellulose (a strong material) – Allows some materials (such as water and oxygen) to pass through ...
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What is BIOLOGY?

... and non-polar molecules? Give examples. Which parts of a phospholipid molecule are polar? Non-polar? What is the difference between hydrophobic and hydrophilic molecules and how do they act? What are van der Waals forces? Hydrogen bonds? How de you write a chemical equation? What are reactants? Prod ...
BIOCHEMISTRY - Mexico Central School District
BIOCHEMISTRY - Mexico Central School District

... There are an extremely large number of different proteins in life! Protein variety comes from: • Differences in the number of amino acids in the chain • Types of amino acids in the chain • Arrangement of amino acids in the chain ...
Biochemistry
Biochemistry

... Proteins are the most complex macromolecules in the cell. They are composed of linear polymers called polypeptides, which contain amino acids connected by peptide bonds. ...
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Endomembrane system

The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane. The system is defined more accurately as the set of membranes that form a single functional and developmental unit, either being connected directly, or exchanging material through vesicle transport. Importantly, the endomembrane system does not include the membranes of mitochondria or chloroplasts.The nuclear membrane contains two lipid bilayers that encompass the contents of the nucleus. The endoplasmic reticulum (ER) is a synthesis and transport organelle that branches into the cytoplasm in plant and animal cells. The Golgi apparatus is a series of multiple compartments where molecules are packaged for delivery to other cell components or for secretion from the cell. Vacuoles, which are found in both plant and animal cells (though much bigger in plant cells), are responsible for maintaining the shape and structure of the cell as well as storing waste products. A vesicle is a relatively small, membrane-enclosed sac that stores or transports substances. The cell membrane, is a protective barrier that regulates what enters and leaves the cell. There is also an organelle known as the Spitzenkörper that is only found in fungi, and is connected with hyphal tip growth.In prokaryotes endomembranes are rare, although in many photosynthetic bacteria the plasma membrane is highly folded and most of the cell cytoplasm is filled with layers of light-gathering membrane. These light-gathering membranes may even form enclosed structures called chlorosomes in green sulfur bacteria.The organelles of the endomembrane system are related through direct contact or by the transfer of membrane segments as vesicles. Despite these relationships, the various membranes are not identical in structure and function. The thickness, molecular composition, and metabolic behavior of a membrane are not fixed, they may be modified several times during the membrane's life. One unifying characteristic the membranes share is a lipid bilayer, with proteins attached to either side or traversing them.
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