basic unit of all organisms; all living things are composed of cells.

the theory that(1)all organisms are composed of one or more cells, (2) the cell is the basic unit of structure and organization of organisms, (3) all cells come from preexisting cels.

compound light microscope

use a series of lenses to magnify objects in steps.

this microscope uses a beam of electrons insted of light to magnify structures up to 500,000 times their actual size, allowing scientits to see within a cell.

unicellualr or multicellualr or organisms, such as yeast, plants and animals, composed of eukaryotic cells, which contain a ture nucleus and membrane-bound organelles.

the central membrane-bound organelle that manages or controls cellular functions.

membrane-bound structures with particular functions within eukaryotic cells.

unicellualr organisms, such as bacteria, each of which is composed of prokaryotic cell. Prokaryotic cells lack internal membrane-bound structures.

structural model of the plasma membrane where molecules are free to move sideways within a lipid bilayer.

lipids with an attached phosphate group; plasma membranes are composed of phosphlipid bilayer with embedded proteins.

Flexible boundary between the cell and its environment; allows materials such as water and nutrients to enter and waste products to leave.

selective permeability

a process in which a membrane allows some molecules to pass through while keeping others out.

move needed substances or waste materials through the plasma membrane

a fairly rigid structure located outside the plasma membrane that provides additional support and protection.

traps light energy and gives leaves and stems their green color.

cell organelles that capture light energy and covert it to chemical energy.

which are strands of genetic material, DNA

short, numerous, hairlike projections composed of pairs of microtubules; fequently aid in locomotion.

is clear, gelatinous fluid inside a cell.

cellular framework found within the cytoplasm composed of microtubles and microfilaments.

endoplasmic reticulum

is the site of cellular chemical reactions.

longer prjections that move with a whiplike motion.

organelles that contain digestive enzymes.

thin hollow cylinders made of protein.

organelle in eularyotic cell nucleus taht produces ribosomes.

group of plant organelles that are used for storage of straches, liqids, or pigments.

the sites where the cell produces protwins according to the directions of DNA.

membrane-bound space in the cyoplasm of cells used for the temporary storage of materials.

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Cell Homework-A.R

Question	Answer
cell	basic unit of all organisms; all living things are composed of cells.
cell theory	the theory that(1)all organisms are composed of one or more cells, (2) the cell is the basic unit of structure and organization of organisms, (3) all cells come from preexisting cels.
compound light microscope	use a series of lenses to magnify objects in steps.
electron microscope	this microscope uses a beam of electrons insted of light to magnify structures up to 500,000 times their actual size, allowing scientits to see within a cell.
eukaryote	unicellualr or multicellualr or organisms, such as yeast, plants and animals, composed of eukaryotic cells, which contain a ture nucleus and membrane-bound organelles.
nucleus	the central membrane-bound organelle that manages or controls cellular functions.
organelle	membrane-bound structures with particular functions within eukaryotic cells.
prokaryote	unicellualr organisms, such as bacteria, each of which is composed of prokaryotic cell. Prokaryotic cells lack internal membrane-bound structures.
fluid mosaic model	structural model of the plasma membrane where molecules are free to move sideways within a lipid bilayer.
phospholipid	lipids with an attached phosphate group; plasma membranes are composed of phosphlipid bilayer with embedded proteins.
plasma membrane	Flexible boundary between the cell and its environment; allows materials such as water and nutrients to enter and waste products to leave.
selective permeability	a process in which a membrane allows some molecules to pass through while keeping others out.
transport proteins	move needed substances or waste materials through the plasma membrane
cell wall	a fairly rigid structure located outside the plasma membrane that provides additional support and protection.
chlorophyll	traps light energy and gives leaves and stems their green color.
chloroplast	cell organelles that capture light energy and covert it to chemical energy.
chromatin	which are strands of genetic material, DNA
cilia	short, numerous, hairlike projections composed of pairs of microtubules; fequently aid in locomotion.
cytoplasm	is clear, gelatinous fluid inside a cell.
cytoskeleton	cellular framework found within the cytoplasm composed of microtubles and microfilaments.
endoplasmic reticulum	is the site of cellular chemical reactions.
flagella	longer prjections that move with a whiplike motion.
lysosome	organelles that contain digestive enzymes.
microfilament	smaller, solid protein fibers.
microtubule	thin hollow cylinders made of protein.
nucleolus	organelle in eularyotic cell nucleus taht produces ribosomes.
plastid	group of plant organelles that are used for storage of straches, liqids, or pigments.
ribosome	the sites where the cell produces protwins according to the directions of DNA.
vacuole	membrane-bound space in the cyoplasm of cells used for the temporary storage of materials.

Created by: Bree R.

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