BioSec 2012: Cheryl - Revision history

Dsouza3190: /* Trying to tie Computer Security into all of this */

2012-04-23T21:38:15Z

Trying to tie Computer Security into all of this

← Older revision		Revision as of 21:38, 23 April 2012
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	*If we follow the same process we are setting up for '''failure most of the time'''…species getting extinct because they failed most of the time		*If we follow the same process we are setting up for '''failure most of the time'''…species getting extinct because they failed most of the time
	*Species '''survival is highly dependent on environment'''…computer security needs to basically work all the time independent of its environment …how is this going to work?		*Species '''survival is highly dependent on environment'''…computer security needs to basically work all the time independent of its environment …how is this going to work?

			Programs = genotype (code/result)
			.exe = phenotype (produce)
			Exons= stuff that’s transcribed (5% or so) = spaghetti code
			Introns= junk stuff (95% or so) = comments


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	**Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out		**Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out
	**Can this be done with computers…randomize things by adding ''introns'' (junk code)?		**Can this be done with computers…randomize things by adding ''introns'' (junk code)?
			* Relationship to cell cycle
			** To enhance computer security, the cell (program) must learn to commit suicide (apoptosis). That is they need to learn how to recognize that they have been infected by a virus or something abnormal and then remove themselves from the entire network.


	----		----

	=Textbook Notes=		=Textbook Notes=
	==Chapter 1: Light and Life==		==Chapter 1: Light and Life==

Dsouza3190: /* Textbook Notes */

2012-04-23T21:37:00Z

Textbook Notes

← Older revision		Revision as of 21:37, 23 April 2012
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	----		----
	=Textbook Notes=		=Textbook Notes=
	Chapter 1: Light and Life==		==Chapter 1: Light and Life==
	* Light		* Light
	# source of information and energy		# source of information and energy

Dsouza3190: /* Textbook Notes */

2012-04-23T21:36:46Z

Textbook Notes

← Older revision		Revision as of 21:36, 23 April 2012
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	::# '''Noncompetitive inhibitors:''' binds to the enzyme somewhere other than the active site which in turn changes the shape of the active site and thus preventing the substrate from binding to the enzyme.		::# '''Noncompetitive inhibitors:''' binds to the enzyme somewhere other than the active site which in turn changes the shape of the active site and thus preventing the substrate from binding to the enzyme.
	::* '''Feedback inhibition''' occurs when the product acts as an inhibitor to one of the enzymes in the pathway that produced it.		::* '''Feedback inhibition''' occurs when the product acts as an inhibitor to one of the enzymes in the pathway that produced it.
			==Chapter 5: Membranes and Transport==
			* '''Fluid mosaic model:''' a membrane structure that is composed of a bilayer of phospholipids with attached and embedded proteins.

Dsouza3190: /* Chapter 4: Energy and Enzymes */

2012-04-23T21:36:23Z

Chapter 4: Energy and Enzymes

← Older revision		Revision as of 21:36, 23 April 2012
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	::# '''Competitive inhibitors:''' blocks substrates from entering the active site, which in turn reduces the enzyme’s productivity.		::# '''Competitive inhibitors:''' blocks substrates from entering the active site, which in turn reduces the enzyme’s productivity.
	::# '''Noncompetitive inhibitors:''' binds to the enzyme somewhere other than the active site which in turn changes the shape of the active site and thus preventing the substrate from binding to the enzyme.		::# '''Noncompetitive inhibitors:''' binds to the enzyme somewhere other than the active site which in turn changes the shape of the active site and thus preventing the substrate from binding to the enzyme.
	*** '''Feedback inhibition''' occurs when the product acts as an inhibitor to one of the enzymes in the pathway that produced it.		::* '''Feedback inhibition''' occurs when the product acts as an inhibitor to one of the enzymes in the pathway that produced it.

Dsouza3190: /* Chapter 4: Energy and Enzymes */

2012-04-23T21:35:12Z

Chapter 4: Energy and Enzymes

@@ Line 113: / Line 113: @@
 **	the study of energy transformations that occur between a system (matter under study) and its surroundings (rest of the universe)
 **	Two law of thermodynamics:
-##	Energy in the universe is constant
+:#	Energy in the universe is constant
-##	Energy conversion increase entropy (measure of disorder/randomness)
+:#	Energy conversion increase entropy (measure of disorder/randomness)

Dsouza3190: /* Chapter 4: Energy and Enzymes */

2012-04-23T21:32:27Z

Chapter 4: Energy and Enzymes

← Older revision		Revision as of 21:32, 23 April 2012
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	==Chapter 4: Energy and Enzymes==		==Chapter 4: Energy and Enzymes==
	* Cells can be basically thought of as a chemical factory (millions of chemical reaction take place in a cell)		* Cells can be basically thought of as a chemical factory (millions of chemical reaction take place in a cell)
			** Chemical reactions used for cell maintenance, manufacture of cell parts and cell replication
			* Energy is the capacity to do work
			* Two kinds of energy
			# Kinetic Energy: energy of motion
			# Potential Energy: energy that is stored as a result of its location or structure
			* Thermodynamics
			** the study of energy transformations that occur between a system (matter under study) and its surroundings (rest of the universe)
			** Two law of thermodynamics:
			## Energy in the universe is constant
			## Energy conversion increase entropy (measure of disorder/randomness)

Dsouza3190: /* Textbook Notes */

2012-04-23T21:31:31Z

Textbook Notes

← Older revision		Revision as of 21:31, 23 April 2012
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	** Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out		** Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out
	** Can this be done with computers…randomize things by adding introns (junk code)?		** Can this be done with computers…randomize things by adding introns (junk code)?
			==Chapter 4: Energy and Enzymes==
			* Cells can be basically thought of as a chemical factory (millions of chemical reaction take place in a cell)

Dsouza3190: /* Chapter 3: Selection, Biodiversity and Biosphere */

2012-04-23T21:31:02Z

Chapter 3: Selection, Biodiversity and Biosphere

← Older revision		Revision as of 21:31, 23 April 2012
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	* Biological organization:		* Biological organization:
	[[File:Chapter3.png]]		[[File:Chapter3.png]]
			* Categorizing organisms on how they obtain carbon
			# '''Autotrophs:''' create their energy-containing organic carbon molecules (glucose) from inorganic carbon molecules (sunlight). Example: plants using photosynthesis
			# '''Heterotrophs:''' get energy-containing organic carbon molecules (glucose) by consuming other organisms. Example: animals eating plants or other animals.
			* Categorizing organisms on how they obtain energy
			# '''Phototrophs:''' obtain energy from light
			# '''Chemotrophs:''' obtains energy by oxidizing inorganic or organic substances
			* '''Theory of evolution:''' all organisms descended from one common ancestor, thus share common features. At the same time due to natural selection species change over time to adapt to their specific environment
			* All living organisms have three essential components:
			# ATP for energy
			# DNA for genetics
			# Plasma membrane
			* Parasitism = symbiotic relationship where one organism benefits at the expense of the other
			* Mutualism = symbiotic relationship where both organism benefit
			* ''Interesting: The genetic barcode that is embedded in almost every cell is the mitochondrial cytochrome c oxidase 1''
			===Computer security aspect===
			* diversity
			** Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out
			** Can this be done with computers…randomize things by adding introns (junk code)?

Dsouza3190: /* Trying to tie Computer Security into all of this */

2012-04-23T21:29:28Z

Trying to tie Computer Security into all of this

← Older revision		Revision as of 21:29, 23 April 2012
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	----		----
			=Textbook Notes=
			Chapter 1: Light and Life==
			* Light
			# source of information and energy
			# Defined as EM radiation
			# Wave of photons
			# Can be absorbed by pigments and then used
			# Colour = light that is not absorbed by pigment
			* Electrons become excited when absorbed by light which in turn then becomes potential energy (photosynthesis)
			* Photoreceptor
			# light-sensing system
			# made up of pigment molecule bound to protein
			# eye = organ of animals to sense light
			* Problem:
			# most light driven processes can only process a certain part of the EM spectrum
			# source of energy…too much can cause deadly effects
			# pigment melanin in our skin absorbs UV (high energy and can be damaging)
			* Circadian rhythms (body clock) the daily cycle of most living organisms have evolved to adapt to the change in light (night and day…plant use photosynthesis during the day and night break glucose)
			* Some animals prefer the dark (nocturnal animals like moths)
			* Some animals have ancestors that had functional eyes but are not blind (blind mole rat)
			* bioluminescent: organisms that use chemical energy to make their own light to attract a mate, camouflage, attract prey or communicate
			==Chapter 2: Origins of Life==
			* life defined by seven characteristics:
			# '''Display order:''' high ordered structures
			# '''Harness and utilize energy:''' getting and using chemical energy to power the organism’s activities
			# '''Reproduce:''' ability to reproduce their own kind
			# '''Respond to stimuli:''' ability to respond environmental stimuli
			# '''Exhibit homeostasis:''' ability to control an organism’s internal environment within the limits to sustain life
			# '''Growth and development:''' consistent growth and development (DNA inheritance)
			# '''Evolve:''' adapt to environments over many generations to have better reproducibility and survival of the species.
			* Cell theory
			# All living organisms are composed of cells
			# Cells are the functional units of life
			# New cells come only from preexisting cells (division)
			* Eukaryotic Cells

			{\| style="border-collapse: separate; border-spacing: 0; border-width: 1px; border-style: solid; border-color: #000; padding: 0"
			\|-
			! style="border-style: solid; border-width: 0 1px 1px 0"\| Function
			! style="border-style: solid; border-width: 0 0 1px 0"\| Organelles/Structures involved
			\|-
			\| style="border-style: solid; border-width: 0 1px 0 0"\| Genetic control of the cell
			\| style="border-style: solid; border-width: 0"\| Nucleus and ribosomes
			\|-
			\| style="border-style: solid; border-width: 0 1px 0 0"\| Manufacture, distribution, and breakdown of molecules.
			\| style="border-style: solid; border-width: 0"\| Endoplasmic reticulum (ER), Golgi apparatus, lysosomes, vacuoles, and peroxisomes
			\|-
			\| style="border-style: solid; border-width: 0 1px 0 0"\| Energy processing
			\| style="border-style: solid; border-width: 0"\| Mitochondria (plus chloroplasts in plant cells)
			\|-
			\| style="border-style: solid; border-width: 0 1px 0 0"\| Structural support, movement, and communication between cells
			\| style="border-style: solid; border-width: 0"\| Structural support, movement, and communication between cells
			\|}
			* Mitochondria and chloroplasts evolved by endosymbiosis which suggests mitochondria and chloroplasts were small prokaryotes and they began living within larger cells
			* '''Cytoskeleton:'''
			** network of protein fibers in the cells
			** functions in structural support and mobility
			** interacts with motor proteins resulting in mobility and cellular respiration
			** composed of three kinds of fibers:
			# '''Microfilaments:''' (actin filaments) support the cell’s shape and are involved in mobility
			# '''Intermediated filaments:''' (not present in plant cells) reinforces the cell shape and provides and anchor for the organelles
			# '''Microtubules:''' (made from tubulin) responsible for cell rigidity and guiding the organelle’s movement
			==Chapter 3: Selection, Biodiversity and Biosphere==
			* Biological organization:
			[[File:Chapter3.png]]

Dsouza3190: /* Trying to tie Computer Security into all of this */

2012-04-23T21:04:30Z

Trying to tie Computer Security into all of this

← Older revision		Revision as of 21:04, 23 April 2012
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	**Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out		**Biology is so good because there aren’t two things that are really the same…they have a lot in common…but there is that one small aspect that sets them apart…if they were all the same then one small thing just wipes all of them out
	**Can this be done with computers…randomize things by adding ''introns'' (junk code)?		**Can this be done with computers…randomize things by adding ''introns'' (junk code)?


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