Cell Vocab
• A: Cell Membrane
– Structure that surrounds and protects the cell
– The limiting membrane of the cell; retains internal
structure; permits exploration and importation of
materials. Composed primarily of lipid and protein,
and a smaller amount of carbohydrate
• E: Nucleolus
– Produces ribosomes
– A mass of largely RNA (some DNA and protein)in the
nucleus producing units of RNA which combine in the
cytoplasm to form ribosomes
Cell Vocab
• F: Cytoplasm
– Materials within the cell membrane that are not a part
of the nucleus
• G: Smooth and Rough Endoplasmic Reticulum
– Network of canals in the cytoplasm
– Membrane lined tubules to which ribosomes may be
attached
– Rough ER: concerned with transport of protein
synthasized at the ribosomes
– Smooth ER: sysnthasizes complex molecules called
steroids in some cells, calcium ions in muscles, break
down toxins in liver
Cell Vocab
• H: Ribosome
– Protein producers
– The site of protein synthesis where amino acids are
strung in sequence as directed by messenger RNA
from the nucleus
• I: Golgi Complex
– Transports and delivers proteins
– (or apparatus) flattened membrane-lined sacs which
bud off small vesicles from the edges; collect
secretory products and package them for export or
cell use
Cell Vocab
• J: Mitochondrion
– Power houses of cell, supplies the energy
– Membranous, oblong structure in which the inner
membrane is convoluted like a maze. Energy for cell
operations is generated here through a complex series
of reactions between oxygen and products of
digestion
• L: Lysosome
– Breakdown of molecules
– Membrane-lined container of enzymes with great
capacity to break down structure, especially ingested
foreign substances
Cell Vocab
• C: Nuclear Membrane
– Porous membrane of similar construction to the
cell membrane; the limiting membrane of the
nucleus, separating it from the cytoplasm;
regulates passage of molecules