The smallest and most basic unit of living things.
single-celled organisms that do not have a membrane-bound nucleus
A cell characterized by the presence of a nucleus and other membrane-bound organelles. .
specialized structures that carry out specific cell functions
Powerhouse of the cell, organelle that is the site of ATP (energy) production
Rough Endoplasmic Reticulum
An system of folded membranes covered with ribosomes where many proteins for transport are assembled.
Smooth Endoplasmic Reticulum
A network of folded membranes inside eukarytoic cells invovled in lipid synthesis (steroid in gonads), detoxification (in liver cells), and/or Ca2+ storage (muscle cells).
a jellylike fluid inside the cell in which the organelles are suspended
a part of the cell containing DNA and RNA and responsible for growth and reproduction
Contains a nuclear membrane and pores.
A membranous sac in a mature plant cell with diverse roles in reproduction, growth, and development.
It helps store water to keep the plants shape.
particle made up of nucleic acid, protein, and in some cases lipids that can reproduce only by infecting living cells
thin, flexible barrier around a cell; regulates what enters and leaves the cell
Also called a plasma membrane has a bilayer of phospholipids
Formed when cell membrane surrounds a molecule outside the cell and ingests it
Tiny hair-like projections of the cytoplasmic membrane to facilitate absorption by increasing surface area. (aid digestion of the intestine)
network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement
hollow tubes of protein about 25 nanometers in diameter, support the cell and moves organelles within the cell
Long, thin fibers that function in the movement and support of the cell
One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
non membrane bounded organelles responsible for protein synthesis
A system of membranes that modifies and packages proteins for export by the cell
Vesicles responsible for carrying substances outside of the cell and back in.
An organelle containing digestive enzymes
organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
strong layer around the cell membrane in plants, algae, and some bacteria
transport of a substance across a cell membrane by diffusion
the movement of materials through a cell membrane using energy
transport of molecules with the help of carrier molecules through the cell membrane
diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
process by which a cell takes material into the cell by infolding of the cell membrane
process by which a cell releases large amounts of material
organelles that detoxify harmful substances that have entered cells