Cell Structure and Function

[sarah...@gmail.com]

I've shared a document with you called "Cell Structure and Function":
http://docs.google.com/Doc?id=dgwbzc96_36g2fh3swb&invite=2000136302

It's not an attachment -- it's stored online at Google Docs. To open this document, just click the link above.
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PLEASE DO NOT CHANGE
tell me if something is wrong
i'm not finished but i'm going to tennis
but i'll be back
this is supposed to be a specific study guide for cell structure and function
thanks

sarah

[Sarah Cen]

wow i spelled my own name wrong lol

[Helena Ord]

lololol

haha, thanks!

could anyone please make a study guide on DNA? That would be REALLY helpful.

thanks :)

[Sarah Cen]

yea if everyone made a study guide
it wud actually make it quicker for u and everyone else
which is the only reason i did this :P

[Jesse Chen]

i don't have time to make an actual study guide for DNA but i found this site for it that has animation, image gallery, video interviews, problems, biographies, and links for "Classical Genetics" aka Mendelian, "Molecules of Genetics" aka the science-y bit of genetics, and "Genetic Organization and Control" aka...well that's self explanatory. on the right hand side after you click on a section there's a list to scroll up and down that summarizes genes/DNA. if you wanna study the more chemical and biological aspect of DNA then look at the last section and also maybe some of the 2nd section. hope this helps!

http://www.dnaftb.org/?gclid=CPO4w-XslJsCFR1N5Qodlkzyog

--
~jesse~

:]

[Helena Ord]

haha, thanks

now someone PLEASE make a study guide!

I'm still semi-confused!

[Sarah Cen]

CAN SOME GET LIKE A DOC WITH INFO ON THE OTHER STUFF LIKE THE ENDOSYMBIOTIC THEORY
JUST LIKE GOOD DEFINITIONS SO THAT ITS EASY TO STUDY
IT"LL BE REALLY EASY TO MAKE FOR ANYONE WILLING
THANK YOU!!!!!!!!!!!

[Jesse Chen]

aghhh
fine
instead of cleaning my room to avoid my mother's wrath for losing my phone
il make your stinking study guide
T-T

--
~jesse~

:]

[Jesse Chen]

it'll be really detailed tho, i have issues sticking to the general ideas

--
~jesse~

:]

[Sarah Cen]

AWW
that means a lot
haha
THANK YOU

[Sarah Cen]

yea thats wat we want
or i do atleast...

[Helena Ord]

okay, I'll do part of DNA, Jesse (24.1 and 2)

[Jesse Chen]

wait nooo
i just did
24.1 and 24.2
YOU BUM

--
~jesse~

:]

[Sarah Cen]

FOR EUKARYOTIC CELLS

ANIMAL CELL

polyribosome-groups of ribosomes
ribosome-performs protein synthesis, can be found attached to ER or floating in cytoplasm,
Endoplasmic Reticulum-system of membranous channels and saccules
rough ER-studded with ribosomes, protein synthesized then enter ER for modification to glycoprotein
smooth ER-lipid synthesis, continuous with rough ER, various other functions depending in cell, FORMS VESICLES that transport protein to golgi apparatus
mitochondrion-breaks down carbohydrate derived products to produce ATP, CELULLAR RESPIRATION
lysosome-vesicles that contain enzymes, fuse with incoming vesicles, intracellular digestion (digest other old part of cell),
peroxisome-similar to lysosomes, contains enzymes that break molecules down, different funcitons,

vacuole-large membranous sac, more prominent in plant cells, STORES substances (sugar, salkts, water, pigments, toxic molecules)

cytoplasm-semi fluid inside cell that nucleus is surrounded by, contains all organelles
golgi apparatus-stacks of curved saccules, SECRETION, PROCESSING, PACKAGING, one side faces ER while other side faces plasma membrane, recieves lipids and proteins from ER, molecules move through to other side where certain things are secreted, incoming versicles from plasma membrane are processed and then added to lysosomes,
vesicle- tiny membranous sacs (transport=proteins or lipids from ER to golgi, secretory=from golgi to plasma membrane, incoming= brings substances into cell)
plasma membrane- phospholipid bilayer with embedded protein molecules, semi permeable, separates living contents inside from nonliving surroundings
nucleus-stores genetic material DNA, governs the characteristics of cell and metabolic functioning
nuclear pore-holes in nuclear envelope that permits proteins into nucleus and ribosomes produced out
chromatin-consists of DNA and associated proteins, thread like material that undergoes coiling to form chromosomes (rod like structures),
nucleolus- (pl. nucleoli) where RNA is produced and where rRNA joins with proteins to form ribosomes
nuclear envelope-double membrane that separates nucleus form rest of cell,
nucleoplasm- where all contents of nucleus are found in
centrosome-lie near nucleus, create spindle during cell division
actin filament-long thin fibers, STRUCTURAL role, form web under plasma membrane allowing cells to move
microtubule-small hollow cylinders that act as tracks along which organelles move
centriole-short cylinders that are believed to help in spindle during cell division (9+0 pattern of microtubules)
cilia and flagella-hair like projections outside cell that allow cells to move (9+2 pattern of microtubules)

PLANT CELL

microtubule-small hollow cylinders that act as tracks along which organelles move
central vacuole-STORES substances (sugar, salkts, water, pigments, toxic molecules), large membranous sac
chloroplast-solar energy used to synthesize carbohydrates, PHOTOSYNTHESIS
ribosome-performs protein synthesis, can be found attached to ER or floating in cytoplasm,
actin filament-long thin fibers, STRUCTURAL role, form web under plasma membrane allowing cells to move
rough ER-studded with ribosomes, protein synthesized then enter ER for modification to glycoprotein
smooth ER-lipid synthesis, continuous with rough ER, various other functions depending in cell, FORMS VESICLES that transport protein to golgi apparatus
cell wall- only in plants, permeable but protective membrane outside plasma membrane (consists of primary and secondary cell wall)
plasma membrane- phospholipid bilayer with embedded protein molecules, semi permeable, separates living contents inside from nonliving surroundings
golgi apparatus-stacks of curved saccules, SECRETION, PROCESSING, PACKAGING, one side faces ER while other side faces plasma membrane, recieves lipids and proteins from ER, molecules move through to other side where certain things are secreted, incoming versicles from plasma membrane are processed and then added to lysosomes,
cytoplasm-semi fluid inside cell that nucleus is surrounded by, contains all organelles
mitochondrion-breaks down carbohydrate derived products to produce ATP, CELULLAR RESPIRATION



OTHER
endomembrane system- is ER, golgi apparatus, nuclear envelope, and vesicles
cytoskeleton-network of interconnected filaments and tubules from nucleus to plasma membrane, help maintain cell shape and allow cell to move
theory-zip codes on proteins that tell whether or not they should be kept in cell or secreted

[Jesse Chen]

HELENA
do 24.3

--
~jesse~

:]

[Jesse Chen]

wait like what exactly do you want on the study guide sarah? like the stuff from which chapter?
idk what to put so il just go thru the glossary and do the words we used in stuff that might be imp't

--
~jesse~

:]

[Sarah Cen]

ummm what chapter are you doing cuz i asked for random stuff like the endosymbiotic theory
helena asked for DNA

[Jesse Chen]

yeah idk i mean like if i don't have specifics probably just whatever i find in the glossary that we went over in class and used for other stuff, maybe other terms if i remember them

On Thu, Jun 18, 2009 at 7:02 PM, Sarah Cen <sarah...@gmail.com> wrote:

ummm what chapter are you doing cuz i asked for random stuff like the endosymbiotic theory
helena asked for DNA

--
~jesse~

:]

[Sarah Cen]

PROKARYOTIC CELLS (no nucleus)

cell wall-made from a complex molecule with chains of amino disaccharide joined by peptide chains
capsule-surrounds cell wall, could also be replaced with slime layer
slime layer-gelatinous sheath surrounds cell wall
flagellum-subunits of proteins which rotate that move cell around
plasma membrane-inside cell wall, phospholipid bilayer with embedded protein molecules, semi permeable, separates living contents inside from nonliving surroundings
nucleoid-single chromosome of DNA, not bounded with a membrane
plasmids-rings of DNA
ribosome-present all over cell, performs protein synthesis, can be found attached to ER or floating in cytoplasm,
thylakoids-present in photosynthetic cynobactieria

[Sarah Cen]

prokaryotic cells also contain thousands (i think) of enzymes that make them more metabolically competent than humans

[Thomas Sacchetti]

wait u said ribosomes can be attached to ER is there an ER in the procaryotic cells

[Sarah Cen]

no
sorry i just copy and pasted

[Shahidain]

There is no endoplasmic reticulum in prokaryotic cells

[Sarah Cen]

did i put that?? oops

[Sarah Cen]

i didnt put an endoplasmic reticulum in prokaryotic cells sadik

[Sarah Cen]

DOES ANYONE WANT ME TO DO A CELL DIVISION CHAP STUDY GUIDE

[Shahidain]

I know, but Tom asked

[Thomas Sacchetti]

PLZ

[Sarah Cen]

somebodys gotta to help me with these study guides
can some one like do one for mendelian genetics
OH CAN SOMEONE DO ONE FOR C3 C4 AND CAM CUZ I LOST MY NOTES ON THOSE AND MY NOTES WERE REALLY GOOD

[Thomas Sacchetti]

those are really straight forward though

[Shahidain]

Sarah, if you make the study guides for everyone, you won't have enough time to study for yourself and get a good night's rest. Think selfishly for once!

[Sarah Cen]

then it will be short? :) r u volunteering?

[Sarah Cen]

lol
nahh i'm making it for myself too
i am selfish :P

[Shahidain]

Okay, which one?

[Shahidain]

I can make some

[Thomas Sacchetti]

thats a lie and ur going to be up till like 3 in the morning studying

[Sarah Cen]

no im not
if i dont finish
i'm sleeping
too bad

[Thomas Sacchetti]

haha im done studying at 9:15.

[Sarah Cen]

ur cool

[Helena Ord]

ahhhh! *study talk overdose*

I don't think we need a study guide on genetics, it was very straightforward, correct?

I will try to make one for photosynthesis, if you like.

On Thu, Jun 18, 2009 at 8:53 PM, Sarah Cen <sarah...@gmail.com> wrote:

ur cool

[Helena Ord]

btw, for your prokaryotic study guide...is that really relevant? Don't get me wrong; thanks for making it, I'm just wondering if it applies.

[Sarah Cen]

its part of the chap i wud know it
its somewhat important
like u gotta know the difference

[Thomas Sacchetti]

Do we need to know phagocytosis and endo and exocytosis

[Helena Ord]

ah, okay.

 

Photosynthesis (Everyone’s favorite, I’m sure J)

 

Light reactions – pigments within the thylakoid membranes absorb solar energy

 

-- photosystem: pigment complex composed of green pigments (chlorophyll a and b) and accessory pigments

 

1) solar energy is passed from 1 pigment to the other until it is concentrated into one particular chlorophyll , a molecule called the reaction-center chlorophyll a.

2) some high-energy electrons leave the pigment complex and move to a nearby electron acceptor molecule by means of an ETC

            -- non-cyclic pathway: NADPH and ATP

            -- cyclic pathway: only ATP

 

 

I need to leave, would someone finish?

sorry, Helena

[Helena Ord]

Tom,

according to Phoebe, not in great detail.

I would suggest briefly looking through it, though.