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ON-Line Assignment - Biology
ON-Line Assignment - Biology

... b) Bacteria and Eukarya c) Bacteria and Protista d) Bacteria e) Protista and Archaea 15. In the five-kingdom system, prokaryotes are placed in the kingdom _____. a) b) c) d) e) Protista Animalia Fungi Plantae Monera 16. Which one of the following statements is true? a) DDT does not help prevent dise ...
5echap5_10guidedreading
5echap5_10guidedreading

... 3. What is unique about the chemical properties of phospholipids? How does this contribute to the structure of the cellular membrane? ...
Prokaryote and Eukaryote organelle vocabulary 1. Cell
Prokaryote and Eukaryote organelle vocabulary 1. Cell

... are the smallest unit of life that can replicate independently, and are often called the "building blocks of life". 2. cell theory- is one of the basic principles of biology. Credit for the formulation of this theory is given to german scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virc ...
Bacteria - Auburn City Schools
Bacteria - Auburn City Schools

... Thought to be the oldest living organisms on Earth.  It is believed that Earth’s atmosphere began as a mixture of poisonous gases, where only this type of organism could have survived. ...
Homeostasis and Biochemistry
Homeostasis and Biochemistry

... All chemical reactions (Digestion, Synthesis etc.) What are enzymes made of Proteins So what are the building blocks of enzymes Amino Acids Every enzymes acts upon only One Substance ...
a. The three-step process by which an external signal is converted
a. The three-step process by which an external signal is converted

... mating type is when the yeast secrete a signaling molecule called “a” factor that binds to receptor proteins on nearby α cells. In type α the yeast secrete a signaling factor called α factor that binds receptors on nearby “a” cells. The two mating factors, a and α, cause the types of cells to grow t ...
endospore
endospore

... 3 parts of flagella  Filament: long outermost region; flagellin subunits (Flg units); attached to the hook  Hook: base; single protein, connection to motor  Motor (basal body): anchors the flagellum to the cell wall and the plasma membrane  Flagella moves the cell by rotating from the motor eit ...
Cell Signaling
Cell Signaling

... Transduction: Phosphorilation/deophosphorilation -Protein kinase: a protein that transfers phosphates from ATP to other proteins in order to activate them -Protein phosphatase: enzymes that remove phosphates from proteins to deactivate them -Phosphorylation cascade: a series of different molecules ...
The Immune System
The Immune System

... Memory cells- help your body remember the infection so your body is prepared the next time you are infected. Function: Destroy invading bacteria and remember how to stop it. ...
Occurrence (Distribution of bacteria)
Occurrence (Distribution of bacteria)

... Motility in bacteria • Bacteria are either nonmotile or motile. Motile forms are either creeping or swimming. Creeping bacteria (e.g. Myobacterium) move or creep slowly on a supporting surface as a result of wave-like contractions ( contract and relax) of their bodies. Swimming bacteria move freely ...
Prokaryotic_cells
Prokaryotic_cells

... Structure and function of bacterial cell organelles: Cytoplasm. Contains all the enzymes needed for all metabolic reactions, since there are no organelles Ribosomes. The smaller (70 S) type. Nucleoid (or Nuclear Zone). The region of the cytoplasm that contains DNA. It is not surrounded by a nuclear ...
Cell: The Basic Unit of Life
Cell: The Basic Unit of Life

... Protists are mostly single-celled, aquatic organisms. They are larger than bacteria. Often they are fast swimmers and some can feed by engulfing whole bacteria or smaller protists. Others perform photosynthesis, so they make their own food. Protists are much more complex than bacteria but they still ...
Eubacteria
Eubacteria

... of the cell. Like the cell wall the cell membrane can also provide structure to the cell. mRNA: mRNA or messenger ribonucleic acid is a molecule of RNA that is like a blueprint for a protein product. mRNA is copied from a DNA template, and carries the copied coding information to the ribosome's to m ...
Methods Discussion Abstract Graduate
Methods Discussion Abstract Graduate

... T- and B-lymphocytes within the vitreous biopsy are too similar to be separated solely on physical properties. Chemotaxis provides a label-free separation alternative. We have started the development of a paper-based, chemotactic, cell immunophenotyping device. This ...
Day 1: Exploring a Population- Sample Answers
Day 1: Exploring a Population- Sample Answers

... It releases enzymes outside of it’s body onto it’s food. The enzymes break down the food, and the bacteria absorbs the food and nutrients through it’s cell wall. Bacteria reproduce by binary fission. This means the cells divide into two copies of the original cell. Trophic Level (producer? consumer? ...
Answer key- Explore pop - Cary Institute of Ecosystem Studies
Answer key- Explore pop - Cary Institute of Ecosystem Studies

... It releases enzymes outside of it’s body onto it’s food. The enzymes break down the food, and the bacteria absorbs the food and nutrients through it’s cell wall. Bacteria reproduce by binary fission. This means the cells divide into two copies of the original cell. Trophic Level (producer? consumer? ...
Simplified microbiology
Simplified microbiology

... Some methods of DNA transfer between cells seem almost accidental. When one bacterial cell dies and its cell wall is ruptured, the contents of the cell are released into the environment. This includes the DNA which may be complete or broken into bits. Other nearby bacterial cells can absorb this DNA ...
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...  If growth is stopped – microorganism is sensitive to the antibiotic  If it isn’t stopped – it is resistant ...
History of Cell Discovery
History of Cell Discovery

... ► 100 times more bacterial DNA on us or in us affecting us than our own DNA (so we're basically 99% bacteria). ...
Living Cells Part A Cell Structure and Function
Living Cells Part A Cell Structure and Function

... is limited. Alcohol becomes toxic to yeast cells and kills them, once the concentration has risen to approximately 14% alcohol. Alcoholic fermentation is now being used to produce an alcohol based alternative to petrol called gasohol. Bacteria are responsible for causing many different diseases. Mod ...
Slide 1
Slide 1

... What DNA will we transform into cells? pVIB luciferase – gene encoding bioluminescence ampr = ampicillin-resistance gene – betagalactasidase which breaks down cell wall Any bacteria with this gene can grow in presence of ampicillin (antibiotic) ...
Le Louis - LaPazChirripoColegio2016-2017
Le Louis - LaPazChirripoColegio2016-2017

... Fluorescent antibody tagging of membrane proteins showed they were mobile and not fixed in place • Membrane proteins from two different cells were tagged with red and green fluorescent markers respectively • When the two cells were fused, the markers became mixed throughout the membrane of the fused ...
Chapter 3 Powerpoint
Chapter 3 Powerpoint

... • Actin interacts with motor molecules such as myosin. • In the presence of ATP, myosin pulls actin along • Example: muscle cells ...
Chapter 11
Chapter 11

... Plasma Membrane Receptors G-Protein Coupled Receptor (GPCR) 7 transmembrane segments in membrane G protein + GTP activates enzyme  cell response ...
Notes Sheet
Notes Sheet

... 1. The most important strategy for species survival is it’s ability to ____________________ 2. Two main strategies of reproduction are S________________ A________________ The key to successful survival of a species is genetic v___________________ ...
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Chemotaxis



Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (e.g., glucose) by swimming toward the highest concentration of food molecules, or to flee from poisons (e.g., phenol). In multicellular organisms, chemotaxis is critical to early development (e.g., movement of sperm towards the egg during fertilization) and subsequent phases of development (e.g., migration of neurons or lymphocytes) as well as in normal function. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.Positive chemotaxis occurs if the movement is toward a higher concentration of the chemical in question; negative chemotaxis if the movement is in the opposite direction. Chemically prompted kinesis (randomly directed or nondirectional) can be called chemokinesis.
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