21 terms

Cells

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Ribosomes
The smallest organelle, it makes proteins.
Chloroplasts
The green organelle that contains chlorophyll. It makes food for the cell. Only in plant cells.
Mitochondria
The organelle in which respiration (breaking down food to produce energy) occurs.
Endoplasmic Reticulum
Transports proteins throughout the cell, the transportation system.
Nucleolus
The organelle inside of the nucleus that makes ribosomes.
Cell Wall
Provides support and protection for the plant cell, made of non-living material.
Lysosomes
The organelle that contains digestive enzymes, the clean up crew.
Cell Membrane
The thin, flexible envelope surrounding all cells, doorway of the cell, controls what goes in and out of the cell.
Vacuole
Stores water, wastes and food for the cell, "storage tank", larger in plant cells.
Nucleus
Control center of the cell, contains DNA and the nucleolus.
Osmosis
The diffusion of water through a cell membrane.
Diffusion
The process by which molecules move from an area of higher concentration to an area of lower concentration.
Five basic levels of organization:
Cells, tissues, organs, organ systems and organism.
Van Leeuwenhoek
The first to see living cells under a microscope.
Schwann
A zoologist who concluded that all animals are made of cells.
Schleiden
A botanist who concluded that all plants are made of plant cells.
Hooke
In 1665 he used a microscope and discovered cells using cork. He named them "cells".
Virchow
The first to observe cell division under the microscope, "living cells only come from living cells".
Cell Theory
All living things are composed of cells, cells are the basic units of structure and function in living things, and living cells are produced from living cells.
Cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended
Chromosomes
Threadlike structures made of DNA molecules that contain the genes.