Life Science Lab

Cell Wall

rigid structure external to the plasma membrane of plant cells and is made out of cellulose to provide support to plant cells

nucleus

the largest and most conspicuous structure in many cells; enclosed by a nuclear membrane; serves as the control center of the cell, regulating both metabolism and reproduction

nucleolus

Makes ribosomes

chromatin

granular material visible within the nucleus; consists of DNA tightly coiled around proteins

chromosomes

formed when the chromatin condenses our coils up tightly during cell division

vacuoles

membrane-enclosed, fluid-filled sacs; may occupy up to nine-tenths of the cell volume in mature plant cells; smaller and more numerous in animal cells

chloroplasts

plastids typical of photosynthesizing plants; enclosed by a double membrane; green in color due to chlorophyll; site of photosynthesis

flagella

A long, whiplike structure that helps a cell to move

cilia

relatively short and numerous; otherwise, same internal structure and function as flagella

pseudopodia

irregularly shaped protrusions resulting from extensions fo the cytoplasm; function in locomotion and phagocytosis \