Cell Structure and Function Unit 2

a microscope where visible light is passed through the specimen and then through glass lenses

membrane-enclosed compartments (subcellular structures)

a microscope where a beam of electrons is focused through the specimen or on to its surface

a microscope which excites electrons on the surface of the cell, and shows the specimen's topography

a microscope which aims an electron through a very thin section of the specimen, which has been stained with atoms of heavy metals, and displays the pattern of transmitted electrons

taking cells apart and separating the major organelles from one another

a type of cell which has its DNA concentrated at the nucleoid, which is not surrounded by a membrane

the area not enclosed by a membrane where the DNA is concentrated, in a prokaryotic cell

a type of cell which has a true nucleus, and many organelles

the entire space between the nucleus and the plasma membrane

the selective barrier which allows the sufficient passage of oxygen, nutrients, and wastes to service the entire volume of the cell at the boundary of the cell

locomotion organelle present in some animal cells; composed of membrane-enclosed microtubules

region where the cell's microtubules are initiated; in an animal cell, contains a pair of centrioles

reinforces cell's shape, functions in cell movement; components made of protein (microfilaments, intermediate filaments, microtubules)

projections that increase the cell's surface area