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Bacteria 1
Bacteria 1

... 1. Rod-shaped often called a bacillus 2. Cocci 3. Spherical • As diverse as their shapes are prokaryotic cells also have different methods to move around the environment. ...
Cells use two different types of transport to ensure homeostas
Cells use two different types of transport to ensure homeostas

... Cells use two different types of transport to ensure homeostasis within the cell itself. The plasma membrane is a selectively permeable membrane that allows the cell to regulate its internal environment. The two types of transport are passive and active. Passive transport is a process by which subst ...
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Nervous System

... that travels along the surface of a neuron’s plasma membrane. Must be initiated by a stimulus (pressure… At rest, the membrane has slightly + charge (Na+) outside and – inside When stimulated, inside membrane becomes + and – outside temporarily. Impulses travel in 1 direction across neurons ...
Chapter 3 The Basic Structure of a Cell
Chapter 3 The Basic Structure of a Cell

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Mouse Embryonic Stem Cells BALB/cJ-PRX
Mouse Embryonic Stem Cells BALB/cJ-PRX

... 1. Day 0. Plate irradiated MEF feeder cells one day in advance of thawing and plating the mES cells. When plating MEFs from a vial containing 5 x 106 cells, they will cover 1 x T75 tissue culture flask, 2 x T25 tissue culture flasks or 1 x 6-well plate. 2. Day 1. Thaw one vial of mES cells rapidly ...
of cell. - Humble ISD
of cell. - Humble ISD

... forever_______. Stem cells that can give rise to many types of cells are said to be pluripotent___________. Although stem cells are found in certain locations in adults, most research involves the use of _embryonic_____________ stem cells, due to the fact they are considered to be “_immortal_______” ...
cell cycle - Humble ISD
cell cycle - Humble ISD

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A Closer Look - Lesson Corner
A Closer Look - Lesson Corner

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... Green-­‐FP was the first fluorescent protein discovered in 70’s. It was isolated from jellyfish where the fluorescence was stimulated by an energy transfer from the luciferase aequorin. In 1992, a fully-­‐length clone encoding Aequorea GFP was prepared. Since then, GFP was expressed in many cells o ...
CHAPTER 4 CELL STRUCTURE AND FUNCTION
CHAPTER 4 CELL STRUCTURE AND FUNCTION

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Is the living cell simple or complex?

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Mt. SAC
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... All of this occurs in two separate divisions called meiosis I and meiosis II. Genetic variation occurs in meiosis I due to crossing over of homologous chromosomes organized as tetrads, which occurs in Prophase I, and independent assortment, which occurs in Metaphase I. Meiosis II is very similar to ...
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The Cell ppt
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cells - Eastchester High School
cells - Eastchester High School

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05 APBio Objectives Ch 11, 12, 13, 45, 46, 47 (parts)
05 APBio Objectives Ch 11, 12, 13, 45, 46, 47 (parts)

... Some Examples of Calculation questions: These might be the actual questions. 48. Given cell counts in several fields of view of cells in the various stages of mitosis and interphase, calculate the amount of time each phase requires in the cell cycle and/or in mitosis. 49. Given a species diploid num ...
Part 1: Biology Basics
Part 1: Biology Basics

... • The fluid inside the cell, called cytoplasm, contains all the organelles. • Animal cells are supported outside the cell by a fluid made of proteins and carbohydrates called the extracellular matrix. • Plant cells are supported outside the cell by a more solid structure, called cell wall, that’s ...
Part 1: Biology Basics
Part 1: Biology Basics

... • The fluid inside the cell, called cytoplasm, contains all the organelles. • Animal cells are supported outside the cell by a fluid made of proteins and carbohydrates called the extracellular matrix. • Plant cells are supported outside the cell by a more solid structure, called cell wall, that’s ...
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... All living things are made up of small parts called cells. The cell is the basic unit of structure in all living things. Because all living things are made up of cells, cells often are called “ the building blocks of life.” The cell also is the basic unit of function in living things. All the life p ...
IB104 - Lecture 9 - Membranes Introduction The phospolipid bilayer
IB104 - Lecture 9 - Membranes Introduction The phospolipid bilayer

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FILTRATION, DIFFUSION, AND OSMOSIS
FILTRATION, DIFFUSION, AND OSMOSIS

... Osmosis is the diffusion of water across a semipermeable membrane. The semipermeable membrane is necessary for osmosis because it restricts the movement of certain solutes, allowing the solvent to pass through. Water generally moves freely through semipermeable membranes. Net osmosis always results ...
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Introduction / The Flow of Information

... activation of genes leading to long term changes. As shown in the diagram below, the activation of genes in the nucleus begins with the binding of a ligand to a receptor in the plasma membrane (cell membrane). This is followed by activation of downstream signaling components which typically are prot ...
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... transports materials and proteins through the cell in sacks called cistern which are sent to the Golgi body. Both cells also have a Golgi complex or golgi apparatus which is a flattened, layered, sac-like organelle that looks like a stack of pancakes. The Golgi body modifies & packages proteins and ...
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Cellular differentiation



In developmental biology, cellular differentiation isa cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some differentiation occurs in response to antigen exposure. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals. These changes are largely due to highly controlled modifications in gene expression and are the study of epigenetics. With a few exceptions, cellular differentiation almost never involves a change in the DNA sequence itself. Thus, different cells can have very different physical characteristics despite having the same genome.A cell that can differentiate into all cell types of the adult organism is known as pluripotent. Such cells are called embryonic stem cells in animals and meristematic cells in higher plants. A cell that can differentiate into all cell types, including the placental tissue, is known as totipotent. In mammals, only the zygote and subsequent blastomeres are totipotent, while in plants many differentiated cells can become totipotent with simple laboratory techniques. In cytopathology, the level of cellular differentiation is used as a measure of cancer progression. ""Grade"" is a marker of how differentiated a cell in a tumor is.
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