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level: cell structure in eukoryotes

Questions and Answers List

level questions: cell structure in eukoryotes

QuestionAnswer
what is the liquid part of the cytoplasm called?cytosal, where the enzymes catalysed reactions happen in the cell
what are the holes between the 2 cellsplasmodona so the cell membrane is continous.
what is the cell membrane made up of?phospholipid bilayer
what is the liquid part of the cytoplasm called?cytosal, where the enzymes catalysed reactions happen in the cell
what is the outside of the double membrane nucleus callednuclear envolope
what are the holes in the nuclear envolope called?nucleur pores, allows larger molecules to leave the nucleus
if we want to release protein what do we needwe need to use the genetic code in dna, to do this, we need to make a messenger RNA, as the actually dna is too big to go out
the rough endoplasmic reticulum is connected to what?nucleur envolope, it has many ribosomes on them named 80s
where are the ribosomes made?in the grey area of the nucleolos
describe the journey of the messenger RNA in the RERthe MRNA travels in the sacs of the RER called cisternae, as it goes through it connects with a ribosome as a sight of protein synthesis
what do the ribosomes do to the messenger RNAthe MRNA uses the code from the DNA, the ribosomes take that code and turn it into a polypeptide chain
what organelle does the polypeptide chain move to (or morph into)a vesicle
where will protein get modified and proccessedthe golgi apparatus
what is the SERthe SER has no ribosomes, they are contiunous with the RER
what is the function of the SERsynthesise lipids (including cholestorel), once the lipids are synthesised they will also go into a vesicle and travel and merge with the golgi
how do the polipepties travel in the golgi apparatusthey travel from left to right through every one of the sausage looking organelles, until it reaches the end where it will now be proccessed and modified
what happens after modification.the proccessed vesicale can go where it needs to go
what can the vesicle do when it is processed.can fuse out the cell membrane, if the vesicle is an enzyme we would call it a lysosome, it can go anywhere in the cell
how do the vesicles / lysosomes actually move around in the cellvia microtubes
what are centrioles made out ofmicrotubes, they come in 9 sets of of 3
what is the cytoplasm structurescaffolding that spreads around the cell, the vesicle can use this to get where it wants
what is the mitochondriaanother double membrane, inside the mitochondria is ribosomes but smaller (these are called 70s)
what is the mitochondria used for?DNA in the mitochondria is used to code for enzymes, ATP is made in mitochondria. allows for exocytosis and endocytosis
what do the plant cells not contain that are in the animal cellcentrioles
what do the cell wall contain?other polysaccharides
what is the cell membrane surrounding the vacuolethe tonoplast
if we draw 2 cells together? what is the middle part calledthe middle lamella
what are the holes between the 2 cellsplasmodona so the cell membrane is continous.
what are the structures sticking out of the bacteria cellsPillai, help the cell stick to surfaces
what does the flagellum help withmovement
what is the cell wall made out of in a bacteria cellpeptidoglycan (murein), made out of peptides and sugar
what do some bacteria cells havehave an outside protection named a capsule, prevents dehydration and toxins
these bacterias need nutrition, how are they going to get the nutrient from the food molecule.the bacteria cells need enzymes to break down (which are made in ribosomes)
what type of the ribosomes are in the bacteria cells called70s ribosomes
what do we need to tell the ribosomes what amino acids need to be study together,we need to get a code, we get this from DNA
what do bacteria cells NOT have but the animal and plant cells have.there are no membrane bound organelles.
we need to _____ the DNAtranscribe the DNA to the Messenger RNA (mRNA)
at the ribosomes, what happens to the mRNAtranslation will take place to produce a protein, which will self assemble and end up with a little tiny enzyme, it would make hundreds of enzyme molecules
what was the hundreds of tiny enzymes do after?they will go out of the bacteria cell to digest this food molecule
what is the yoyo like structure in the nucleuschromatin - and is what the chromosomes are made out of chromosomes
what does the RER and the SER do in relation to the nucleusit surrounds the nucleus
what is another function of the golgi apparatusextracellular transport
what does the SER produce. (vesicle)secretary vesicles that fuse with the cell surface membrane and releases contents via exocytosis
how large is the mitochondria3rd largest organelle
what hdoes the inner membrane do in the mitochondriathe innermembrane is folded --> increasing the surface area
what is cristaethe interfolding of the innermbranes
what does lysosomes containcontains hydrolytic enzymers --> catalyses hydrolysis
what is the function of the lysosomesapoplyosis --> cell suicide and it digests cells
how large is the chloroplasts2nd largest organelles, it contains a double membrane
explain the inner membrane of the chloroplaststhe inner membrane is folded forming granum which are made up of thylakoids --> increases surface area
what is the function of the plasodesmataallows substances to pass from cell to cell without having to go through the cell wall or the cell membrane
how big is the prokaryote cellgenerally 1 -5 micro metres in diameter, contains 70s ribosomes