cell structure
helps the cell keep its shape
what is the cytoskeleton?
Are large or small more efficient at moving things in/out of the cell?
what is small?
lacks a nucleus
what is a prokaryote?
absorbs light in photosynthesis
what is chloroplast?
used to observe objects in the micrometer range of size
what is a microscope?
jelly-like fluid inside the cell
what is cytoplasm?
contain actin, help strengthen and change shape of cell
what are microfilaments?
protects DNA from the metabolic processes of the cell
what is a nucleus?
Has a cell wall and membrane-bound organelles
what is a plant cell?
microscopes that require dead specimens
what is an electron microscope?
rigid structure on the outside of the membrane
what is the cell wall?
area inside the nucleus where ribosomes are made
what is the nucleolus?
viscous fluid enclosed by the nuclear envelope
what is nucleoplasm?
general term for membrane-bound organelles that help in photosynthesis, storage, or pigmentation
what are plastids?
uses light and lenses to magnify an image
what is a light microscope?
the outermost membrane of a cell
what is the plasma membrane?
type of vesicle that digests old organelles and foreign substances
what are lysosomes?
outer boundary of the nucleus; controls access to DNA
what is the nuclear envelope?
make & store pigments other than chlorophyll
what are chromoplasts?
focus electrons through the sample, giving a 2D image of the interior
what is a transmission electron microscope?
states that the membrane is made of a phospholipid bilayer in which proteins can drift
what is the fluid mosaic model?
organelle that is a membrane bubble, forms by budding, transports other materials around
what is a vesicle?
“holes” that substances travel through to leave/enter the nucleus
what are nuclear pores?
unpigmented; make & store starch grains
what are amyloplasts?
focus electrons on the surface of the sample, giving a 3D image of the exterior
what is a scanning electron microscope?