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Functions of a Cell
Functions of a Cell

... There are two distinct types of cells: prokaryotic cells (e.g. bacterial cells) and eukaryotic cells (e.g. plant or animal cells). The main difference between the two is a well-defined nucleus surrounded by a membranous nuclear envelope that is present in only eukaryotic cells. Both types of cells s ...
MITOSIS
MITOSIS

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why don`t cells grow indefinitley

... Many cells grow until they reach a certain size and then divide. Why don’t cells grow indefinitely, until they become the size of basketballs? What problems arise when a cell grows larger? Why does a cell divide into two smaller cells when it reaches a certain size? These are all questions that scie ...
kvdw - mmmig
kvdw - mmmig

... uptake of bacteria into a vesicle and transmigration across the epithelial or endothelial barrier. This simple invasion step is countered by innate immune elements. C-reactive protein binds to PCho on the bacteria and surfactant contains abundant PCho, both of which inhibit bacterial contact with th ...
Cell Biology Questions and Learning Objectives
Cell Biology Questions and Learning Objectives

... o Discuss the differences in structure of a protein occupying its target destination in the cell and immediately after translation from the mRNA o Explain the mechanism and function of the unfolded protein response and its value to the cell. o Compare the general mechanisms that allow some newly syn ...
Organic Compounds
Organic Compounds

... molecules are broken so that simple sugars can be absorbed into the bloodstream. The bloodstream carries the simple sugars to cells throughout the body. Once inside the cells, simple sugars are used as fuel in the process of cellular respiration, releasing energy which is stored as ATP. ...
Lecture 2 - UniMAP Portal
Lecture 2 - UniMAP Portal

... Eubacteria (commonly called bacteria) and Archaea. The characteristics of cell envelops vary with type. The envelop generally consists of a cytoplasmic membrane (plasma membrane) and a cell wall The membrane composed primarily of proteins and lipids maintains concentration gradients while the wall p ...
Cell Growth and Division
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... • Interphase is the LONGEST Phase in the Cell Cycle of a typical Cell. Interphase used to be referred to as the "RESTING PHASE". • During Interphase, cells carry on all their usual functions, such as respiration and enzyme production. The Cell also GROWS and DEVELOPS into MATURE FUNCTIONING Cells wh ...
Kaitlyn Kraybill-Voth Period 3 Investigation 2: Scientific Essay: Cells
Kaitlyn Kraybill-Voth Period 3 Investigation 2: Scientific Essay: Cells

... sexual reproduction is called meiosis. The cell division associated with growth and cell replacement or repair is called mitosis. In both types, the nucleus splits and DNA is replicated. The cell division mitosis produces daughter cells that have al the genetic material of the parent cell (a complet ...
Bacterial Systems for Assembly, Secretion and Targeted
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Osmosis and diffusion
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Chapter 3 BIGGER CELLS

... to these three functions. So it is not only much bigger than its prokaryotic counterpart, it is also more specialised and more sophisticated. The other jobs done by the prokaryotic membrane are delegated in eukaryotes to membrane structures inside the cell. The total area of these internal membranes ...
Topic 2.1 Cell Theory - hrsbstaff.ednet.ns.ca
Topic 2.1 Cell Theory - hrsbstaff.ednet.ns.ca

... • Once cells reach a certain size they stop growing and divide. If a cell grew too large it would have many problems because its surface area to volume ratio would become too small. As the size of an object increases the ratio between surface are and volume decreases. • In cells, the rate at which m ...
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Diffusion/Osmosis Notes

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CELL ENVIRONMENTS REVIEW SHEET
CELL ENVIRONMENTS REVIEW SHEET

... you open the package and release the molecules, hat would be an example of osmosis. Explain whether this statement is true or false and WHY. THIS IS FALSE BECAUSE IT DOES NOT TALK ABOUT WATER, WHICH IS OSMOSIS. THIS IS AN EXAMPLE OF DIFFUSION. ...
CELL STRUCTURE AND FUNCTION
CELL STRUCTURE AND FUNCTION

... ¢  Contains ribosomes for protein synthesis. ¢  Has three exterior layers: capsule, cell wall, and plasma membrane. ¢  Contain flagella to help with locomotion. ¢  Many bacterial cells also contain pilli, which help them attach onto other ...
Cell Organelles
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Cell Structure and Function
Cell Structure and Function

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Ear - iupui
Ear - iupui

... maculae (one utricular, one saccular). These receptors detect rotational and linear acceleration as well as gravity and are used to maintain equilibrium. The auditory portion contains a single neuroepithelial sensory receptor, the spiral organ. The auditory portion in humans has two adnexa (look it ...
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CfE Advanced Higher Biology Unit 1: Cells and Proteins Homework 1
CfE Advanced Higher Biology Unit 1: Cells and Proteins Homework 1

... Two types of muscle, red and white, can be distinguished by their colour in samples of fresh tissue and can be easily separated. Red muscle cells obtain energy mainly using aerobic respiration: they have many large mitochondria and a good supply of oxygen. White muscle cells obtain energy mainly by ...
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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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