Bio Quiz

Microfilament

involved in muscle contraction in larger organisms

Cell Membrane

Also called the plasma membrane

Cytoplasm

Watery substance that fills the interior of cells and suspends organelles

Lysosome

Bags of enzymes used to digest particles and bacteria; "garbage men" of the cell; they work in conjunction with vacuoles

Nucleus

Control center of the cell; contains nucleolus and DNA

Rough Endoplasmic Reticulum

External Surface is studded with ribosomes; membranous structure that synthesizes protein; acts as a transport system for newly formed proteins

Vacuoles

Form from a piece of membrane breaking loose from cell membrane; store substances; storage sacs; plant cells have a single large one; animal cells have many smaller ones

Nucleolus

Location where ribosomes are formed

Cilia and flagella

Locomotive structures made up of microtubles

Cell Wall

Made mostly cellulose, this encases or surrounds plants cells and gives them their characteristic shapes

Smooth Endoplasmic Reticulum

Membranous structure that synthesizes fats (lipids)

Centrioles

Only found in animal cells; form spindle fibers during cell divison

Mitochondria

Powerhouse of the cell; site of ATP (adenosine triphosphate) production

Golgi Body

Processes, packages, and stores the fats and proteins produced by the ER

Cell Membrane

Semipermeable barrier made of two layers of phospholipids

Ribosomes

Site of protein synthesis; found in cytoplasm and on rough ER

Chloroplasts

Sites for photosynthesis; found only in plant cells; contain chlorophyll; location where photosynthesis occurs

Vacuoles

Storage sacs; plant cells have a single large one; animal cells have many smaller ones

Plastids

Structures found only in plants cells; chloroplasts are one type

Microtubules

Support the shape of an entire cell; make up cilia, flagella, and centrioles; semipermeable barrier made of two layers of phospholipids

Chromatin

Uncoiled DNA; coils into chromosomes during cell division