ch review
Terms
undefined, object
copy deck
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- ft
- define cells
- it has independent functioning a cytoplasm and alot of organells
- define microscope and compound microscope
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a compound microscope has more than one lens
microscope is an instrument that makes small things appear larger - what did robert hooke discover
- robert hooke discovered cells through looking at microscpe at a slice of cork
- what did leeuwanhoek discover
- he discovered bacteria through looking at scrapings of teeth
- state the cell theory
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1.all living things have cells
2.cells come from cells
3.cells are building blocks of life - what is magnification and resolution??????
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magnification-the ability to make things loook larger than they appear
resolution-the ability to clearly distingushthe individual parts of an object - how does a lens magnify???
- it bends the light
- what is a convex lens??
- uses a beam of light to bring a point to focus
- how does a electron microscope work?????
- uses beams of electrons
- who are schledien and schwan??????????
- scledien and schwann had made up the cell theory
- cell wall
- structure that supports the cell and gives it a rigid structure
- golgi boddies
- recives proteins and distributes things to other parts to the cell
- chloroplasts
- captures energy from sunlight and uses it to produce food
- vacuoles
- like a storage area
- lysosomes
- chem. that break down large food particles into smaler food particles
- cell membrane
- controls which substances can enter or leave the cell
- nucleus
- directs all cell activities
- ribosomes
- its whetre proteins are made
- e.r.
- proteins and other materials are carried from one part of the cell to the other
- mitochondria
- produces most of the cells energy
- chromatin
- carries genetic information
- 2 plant organells not found in ac
- chloralplasts and cell wall
- bacteria differ than others???????????
- single celled organism no neucleus
- compare and contrast plant animal and bacteria cell
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bacteria-very small no neucleus single celled organism
plant- bobx like structure green neucleus
animal cell-blob like shape has neucleus and big cell - do cells look the same???
- no because not all cells do the same things
- organic cimpound
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has carbon which makes up all living things
inor-doesnt except for carbon dioxide - define element, atom, compound and molecule
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atom-smallest unit of an element
element-a substance that cannot be broken down
compound-2 or more sub comb
molecule-smallest unit of most compounds - diff types and functions
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proteins-form parts of the cell menbrane make upmany organells within the cell
nucleric acids- has instuctions that cell needs to carryout functions
carbohydrates-gives energy within the cell
lipids-store energy for later - what is enzyme
- speeds up chemical reaction in a living thing
- lipid starch sugar
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lipids-brown paper bag
starch-iodine
sugar-bennedicts solution - what is cholestrol??
- cholestrol- is a lipid narual made in your body,some foods contain excssive chosetrol which clogs artry snd also veins
- what is dna?????
- genetic material that carries info about organism and is passed from parent to offspring