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I. What is a virus? - Effingham County Schools
I. What is a virus? - Effingham County Schools

... reproduce. The cell that it reproduces in is a host cell. A virus destroys its host cell. How? 1. Lytic Cycle -how a virus reproduces a. When a virus enters a cell and is active it causes the cell to make new viruses. This will eventually destroy the ...
Cytoskeleton 14
Cytoskeleton 14

... Nine doublets of microtubules make a ring having two single microtubles in the center. Cross linking motor proteins along the length of flagellum and cilium connect the outer neighboring doublet. Centriole like basal body anchored the flagellum or cilium in the cell. Basal body of sperm in animals/h ...
Importance of Cell Division
Importance of Cell Division

... 2. Cell division for growth As all organisms grow, the number of cells increases. As multicellular organisms grow, their cells duplicate their genetic information and divide. Cells undergo division rather than simply growing larger, this is because if the cell gets too large, it may not be able to t ...
Slide 1
Slide 1

... Microtubules are conveyer belts inside the cells. They move vesicles, granules, organelles like mitochondria, and chromosomes via special attachment proteins. They also serve a cytoskeletal role. Structurally, they are polymers of tubulin which is a globular protein.. The tubulin molecules are the b ...
Two Types of Cells Prokaryotic vs Eukaryotic Cells Let`s SQ3R to
Two Types of Cells Prokaryotic vs Eukaryotic Cells Let`s SQ3R to

... organism made of a single prokaryotic cell. The earliest prokaryotes may have arisen more than 2.5 billion years ago. Bacteria are prokaryotes. They are very small cells with a simple structure. Prokaryotes do not have a nucleus. This means that their DNA is not enclosed in a membrane inside the cel ...
Ch. 7.1 Guided Notes
Ch. 7.1 Guided Notes

... ______  Ruska                                      D.  Was  the  first  person  to  observe  living  cells  under  the  microscope   ______  Hooke                                      E.  Discov ...
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Key Team Publications

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Bacterial Structure - UAB School of Optometry
Bacterial Structure - UAB School of Optometry

... Double-stranded DNA; usually circular (borrelia = linear) Few to several hundred kb Few to several hundred copies per cell ...
Name - OnCourse
Name - OnCourse

... 2. Which process can move molecules from a lower concentration solution on one side of the membrane to a higher concentration solution on the other side? 3. Which process does not require energy? 4. What does the word facilitated mean in facilitated diffusion ? ...
Summary - Nmt.edu
Summary - Nmt.edu

... and protein found throughout the cytoplasm. Proteins are assembled on ribosomes. Eukaryotic cells contain an internal membrane system known as the endoplasmic reticulum, or ER. The ER is where lipid components of the cell membrane are assembled, along with proteins and other materials that are expor ...
The Central Dogma: A Journey Down a One
The Central Dogma: A Journey Down a One

... But other functions will be different, for example the heart cell has to contract and probably uses glucose faster for the energy needed for contraction. And skin cells need to do other things like making sweat glands. ...
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What is its job?

... • It has lots of mitochondria in its head to produce more energy, for its long journey to the egg cell. • The head contains enzymes which allow it to digest into an egg cell and join with it. ...
Unit 3: Cells
Unit 3: Cells

... Generation Simulated early Earth to find that complex organic compounds could be spontaneously formed from simple inorganic compounds Louis Pasteur 1861 - Pasteurization ...
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Unit 2 Bio Study Guide

... 18. Which scientist named the cell? ___________________________________ 19. Which scientist discovered that all plants had cells? ________________________________ 20. Which scientist discovered that all animal cells have cells? __________________________ 21. Which scientist discovered that all cells ...
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Unit 2 Practice Questions

... QuickTime™ and a decompressor are needed to see this picture. b. Which solute(s) will exhibit a new diffusion out of the cell? c. Is the solution outside the cell isotonic, hypotonic, or hypertonic? d. In which direction will there be a net osmotic movement of water? e. After the cell is placed in t ...
Seventh Grade Review - PAMS-Doyle
Seventh Grade Review - PAMS-Doyle

... or a cell wall; whether the organisms exist as single cells or are multicellular; and how the organisms get their food. For example, simple, single-celled organisms that are able to survive in extreme environments are believed to be fundamentally different from other organisms and may be classified ...
Ch1-Cell - BMC Dentists 2011
Ch1-Cell - BMC Dentists 2011

...  female breast at puberty and during ...
cell structure and function
cell structure and function

... When cells cluster together and perform the same function, they are called tissues. When tissues cluster together and perform the same function, they are called organs. Organs cluster together to form organ systems, which result in the total organism. All cells on Earth A) Are enclosed in a membrane ...
Prokaryotic vs eukaryotic: prokaryotic – no internal
Prokaryotic vs eukaryotic: prokaryotic – no internal

... Prokaryotic vs eukaryotic: prokaryotic – no internal membranes therefore no membranebound organelles (they only have ribosomes) and no nucleus; their chromosomes are circular and do not have histone proteins; bacteria and archeae are the only examples. Eukaryotic – have organelles; DNA in linear chr ...
Basic Biological SA Questions
Basic Biological SA Questions

... cell structure, of even the simplest kind. There was no membrane, no nucleus, and no ribosomes. They determined that a virus was nothing more than a strand of nucleic acid, DNA or RNA, protected by a protein shell. Scientists also believed that viruses lacked the mechanisms necessary for metabolic f ...
Cell Structure and Function - Mount Mansfield Union High
Cell Structure and Function - Mount Mansfield Union High

... • Mitochondria have their own DNA (mDNA) • Cells do not produce new mitochondria during cell division – Mitochondria divide and partition between new cells ...
Cell Organelles Worksheet
Cell Organelles Worksheet

... In a far away city called Grant City, the main export and production product is the steel widget. Everyone in the town has something to do with steel widget making and the entire town is designed to build and export widgets. The town hall has the instructions for widget making, widgets come in all s ...
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1.2b Cells

... dissolve bacteria. When a bacterium is discovered within a cell, a lysosome bubble will fuse onto it and release its contents in an effort to dissolve the invader. If there was a defect in the lysosome of a white blood cell, the bacteria could accumulate within the cell and kill a person by ...
cells! - Catawba County Schools
cells! - Catawba County Schools

... Makes packages and packages proteins to be transported outside the cell. Breaks down and disposes of food molecules, wastes and worn out cell parts. Releases energy from food to power the cells functions. ...
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Cell cycle



The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication (replication) that produces two daughter cells. In prokaryotes which lack a cell nucleus, the cell cycle occurs via a process termed binary fission. In cells with a nucleus, as in eukaryotes, the cell cycle can be divided into three periods: interphase, the mitotic (M) phase, and cytokinesis. During interphase, the cell grows, accumulating nutrients needed for mitosis, preparing it for cell division and duplicating its DNA. During the mitotic phase, the cell splits itself into two distinct daughter cells. During the final stage, cytokinesis, the new cell is completely divided. To ensure the proper division of the cell, there are control mechanisms known as cell cycle checkpoints.The cell-division cycle is a vital process by which a single-celled fertilized egg develops into a mature organism, as well as the process by which hair, skin, blood cells, and some internal organs are renewed. After cell division, each of the daughter cells begin the interphase of a new cycle. Although the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for initiation of cell division.
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