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Biology 103 Ch. 1,3,4

Biology

study of living things

organism

a living thing

Branches of Biology

Microbilogy/ Anatomy/ Physiology/ Pathology/ Ecology

microbilogy

the study of microscopic organisms

anatomy

study of structure

physiology

study of life functions/ life activites ex. photosynthesis

pathology

study of diseases, and disease causing agent

ecology

study of now organisms interact with their environment

Themes of Biology

energy/ system and interactions/structure and function / unity with diversity/ evelution/ homeostasis/ cooperation

energy(theme of biological science)

powers of life (ex. metabolism)

system and interaction(theme of biologicla science)

systems are made of smaller parts. Interacting to produce awhole. (ex. parts of a body)

structure and function( theme of biological science)

bilogical structure is well suited to function (ex. animal's anatomy, cell;s structures)

unity within diversity(theme of biological science)

there are countless organisms. each organism is united by shared characteristics. (ex. bacteria and humans they share metabolism)

evolution(theme of biological science)

the environment is and has changed. Organisms have changed with its environment)

homeostasis(theme of bilogical science)

maintaining internal stateability. even though the outside of the organism is changing the inside stays the same.

cooperation(theme of biological science)

deals with each organism helps the other live.

Bilogical Diversity 6 kingdoms

Archeabacteria/ Bacteria/ Protists/ Fungi/Plants/ Animals

Archeabacteria

One of the kingdoms consists of old bacteria from the past (ex. methanogens/ Halophiles)

Bacteria

one of the kingdoms of biology that is present day bacteria

Protist

one of the kingdoms of biology (ex. protozoa/Alga)

Fungi

one of the kingdoms of biology(ex. mushrooms/ yeast/meldews)

Plants

one of the kingdoms of biology (ex flowers)

Animals

one of the kingdoms of biology (ex. dog)

Shared Properties of Life

cellular organization / metabolism / homeostasis / reproduction / responding/ heredity / adaptations / growth

cellular organization (prop of life)

cells are the basic unit of life. all things have cellular org.

metabolism (prop. of life)

all chemical processes within a cell involve with storing or producing energy. 2 PHASES anabolic meta and catabolic meta

anabolic metabolism

to build large substances from smaller substances

catabolic metabolism

breaking down of large substances into smaller substances and releasing energy

homeostasis (prop. of life)

maintaining internal stability

reproduction (prop. of life)

the production of offspring. Has 2 types sexual and asexual repro.

sexual reproduction

producing offspring with the use of "gamete"(sex cells) Is most common becasues it produces genetic diversity

asexual reproduction

producing of offspring without the use of "gametes" Ex. Mitosis- cell division/ Budding- the production of an out grows on a parent organism eventually outgrows into a new organism/Fragmentation-when pieces of an orgainism grows into new organisms. ex. cutting flat worms inhalf. You get two worms.

responding (prop of life)

to react to a stimulas ex. light to a plant

heredity (prop. of life)

living things share common DNA genes

Adapatations (prop. of life)

to adjust to the environment.

growth/ development (prop. of life)

to increase in size/ then they go through development changes

chemistry

the sciences of the relationships of matter

Biochemistry

the study of life

atoms

smallest units of matter. each is different

elements

a form of matter composedof one type of atom

nucleus

the center of an atom conatins a protons and neutrons/ also contains genetic code and controls cell activities

protons

a + charged particles that have a uniformed weight of 1P= 1 amu 10= 100mu

neutrons

particles with a neutral charge and does not have a uniformed weight that can be heavy or light

electron cloud

a locations where electrons are

electrons

-- charged particles that has a very small mass and orbit the nucleus

energy levels

the place where electrons orbit the neucleus

orbitals

perement electrons to orbit the nucleus but stay away fron other ekectrons and other energy levels. has usually two electrons together

Ist level of electron cloud

max number of electron 2 /orbitals 1

2nd level of electron cloud

max # of electrons is 8 / orbitals is 4

3rd level of electron cloud

max# of electrons is 8 or 18 depending on how you need them / orbitals 4 or 9

4th level of elctron cloud

max# of electrons id 18 / orbital 9

rule of 8 for enegy levels

outer energy levels can have a maximum of 8 electrons they can have less but they can' t have more

atomic number

number of protons (protons = electrons)

compounds

two or more elements chmically bonded by either sharing or transfering electrons

Ionic bonds

a chemical bond formed when atoms lose or gain electrons to fill up orbitals or energy levels(strongest type of bond)

oxidation

to lose electrons

reduction

to gain electrons

covalent bond

a chemical bond formed when electrons are shared between atoms to complete orbitals and energy levels.( next to strongest bond)

hydrogen bond

are fromed when atoms of one molecule are weakly attracted to hydrogen atoms in other molecule ex DNA

nonpolar molecules

type of covalent bond are equaly shared between two atoms or elements producing no charged ends

polar molecules

type of covalent bond sharing of electrons. Electrons are unequally shared producing slite different charge at the pole( end of molecule )

carbohydrates

a macromolecule that is energy

lipids

a macromolecule that us energy, insalation. and builds cell components.

proteins

a macromolecule that builds cell componants

nucleic acio

a macromolecule that carries genetic information

carbohydrates

conatains C,H,O atoms. which H and O ratio is 2:1 structure formula can be in a ring or chain design FUNCTION is energy and structual support

3 Classes of crbohydrates

Monosaccharides/Disaccharides 0r Oligosaccharides / Polysaccharides

Monosaccharides

are the monomer unitr of carbohydrates. they are used to assemble large carbohydrates Ex glucose, frutose, galactose

Disaccharides or Oligosacchrides

double sugar carbohydrates composed of two monoscrabader bonded by senthesis EX lactose / surcose/ maltose

Polysaccharides

carbohydrates containing thousand of monos. units . they are fiberous becasue cardon atoms brench out FUNCTION is to support and can be energy substance

starch

polysacchoride that is common in plants composed of thousands of glucose componants

cellulose

polysaccharide that is plant fiber insoulable glucose unites. located in cell walls

chitin

a Polysaccharide thousands of glucose units form external skeletons

glycoyen

a Polysaccharide that is an animal starch that is thousands of glucose units. located in muscles and liver orgainisms

saturated fat

fatty acids that are hard, regid, not flexible, orginated from animals oils and fats

unsaterated fat

fatty acids that are soft, flexible, and are found in plant orgins

proteins

most diverse macromolecules composed of C,O,N,H atoms/ form a chain structure/ subunit monomer is amino acid/ FUNCTION= build cell componants and support/ FORMED by dehydration synethesis

DNA

a type of nucleic acid that contains 4 nitrogen acids A,T,G,C / has dioxiribose sugar / PURPOSE= carry out genetic codes and store genetic codes/Looks like a ladder / Can be housed in cytoplasm nucleus or nucleoid

RNA

a type of nucleic acid that conatins 4 nitrogen acids A,U,G,C/ has ribose sugar / PURPOSE 1. to copy DNA (called transcription)2. and sequence amino acids and produce protein.Looks like half a ladder

Origin Theories Of Macromolecules & Cells

Extra Terrestrial/ Evolution/ Creation

Extra Terrestrial ( Theory of Macro. & Cells)

the theory that molecules were transfered from another planet to earth. Evidence: Meteorites hit the earth and fossils and bacterias where in them

Evolution (theory Of Macro.& Cells)

the theory that organisms change overtime Evidence- Miller-Urey experiment in which that put N,H,C,ammonia,Volcanic activity, and lighting in a vacume and mixed them together and made mcaromolecules.

Creation(theory of Macro. & Cells)

God created macromolecules Evidence none

cell theory

1. all organisms are composed of one or more cells 2.cells are the bsic unit of structure & function in life 3. cells arise from preexciting cells 4. all cells have evolved from simple to comples life forms

Basic Aspects of Cells

Cell membrane/ DNA /Cytoplasm / Size & Surface Volume Constraints

Cells membrane(plasma)

1. it seperates the cell from the external environment 2. promots the flow or movment of molecules and ions 3. contains protein receptors that control cells activities(external)

cytoplasm

is protoplasm outside the nucleus. Contains membrane systems endoplasmic recticulum and goli apparatas then it contains ribosomes, lysomes , nucleus , filaments(microfilaments, micortubules)

Prokaryotic Cells

1. primitive cells 2. no nucleus 3. no membrane bound substances 4. DNA cluster in an area called nucleoid 5. they have rigid, hard, tough cell walls 6. composed cell walls Peptidoglycan 7. Located in Archeabateria and Eubacteria(Bacteria) Kingdoms

Eukaryotic Cells

1. have a nucleus 2. have membrane bond organiles 3. membrane bond organiles produce compartmentalization 4. located in Protist, Fungi, Plant & Animals

Compartmentalization

allows different chemical reactions to ovvur in one cell

Theory of Endosymbosis

(explains compartmentalization) Proposes that some of the present prokaryot evolve by a symbosis process in which one prokaryotic species engulfed another prokaryotic species this produced eukaryotic cell.

nuclear envelope

membrane that surronds nucleus compsed of two lipid layers. Controls intre and exit

nuclear pore

protein wholes with in the envelope. Allows RNA intre and exit

nucleolus

dark spherical mass with in the nucleus Composed of RNA components PRODUCES ribosomes

chromatin material

desolves DNA

chromosoms

condenced DNA units bound by proteins

Endoplasmic recticulum

a general collection of genetic canalsand sackes that lead from the nucleus to the plasm membrane FUNCTION 1. transport proteins and lipids 2. Manufactures and packages proteins and lipids

Rough ER

a type of ER that are membranes with ribosomes attached FUNCTION manufature, package, and transport proteins

Smooth ER

a typeof ER that are membranes with out ribosomes FUCTION manufature, package, transport lipids

Goldi Complex

composed of gogi bodies & vesicles FUNCTION 1. collect, package, redistripute proteins and lipis 2. package proteins and lipids for searchition or exchrition

lysosome

reycycleing centers. / contain strong digestive enzymes./Recycle worn-out cell components/ called suicide sacks are damages to cells if they break

peroxisomes

speitle vesticles / contain enzymes that confort lipids to carbohydrates / contains enzymes that detoxify harmful substances

mitochondria

power house of cell (make and store energy)/ cite of oxidative meatbolism/metabolizes carbohydrates or fats into cell energy(ATP)

plastids

store or make food LOCATED in plant protist cells HAS 2 types Chloroplist(make food by housing chlorophl) Leucoplast(store food such as lipids & starch.(nonpigmented)

ribosomes

they are RNA particles that manufacture proteins -LOCATED on ER or free float in cytoplasm

vesicles

tiny storage pays. produces from Golgi complex FUNCTION - transport storage

Centrioles

found in animal cells only composed of MTOC ( Microtubuce, Organization, Centers ) Pattern 9+2 PURPOSE - asset cell divison

cytoskeleton

cell skeleton -composed of fibers & bundles od fibers that produce scafold net work proviving shape, frame work, support and cell locomotion___Composed of Microtubules and microfilaments

microfilaments

sctin fibers

microtubules

bundles of fibers based on TMOC PURPOSE produce flagella and cilia for cell locomotion

center vacuoles

membrane bound storage compartment/stores water , dissolves ions and wastes/ used to produce Osmotic pressure

plasmolysis

when vaculoes loses osmotic pressure ( wilt)

microvilli

finger like projections of the plasma membrane FUNCTION to increase surface area of plasma membrane to avoid absorbtion and transport

flagella

long hair like projections contain MTCO . Connect by baisol body

cilia

short projections composed of MTCO connect by baisol body

pseudopodia

citoplatic extensions cell crawling macanizoms

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