Prentice Hall Biology 7-1 Vocabulary
About this set
Created by:
Antony11 on September 25, 2009
Subjects:
Description:
7-1 Life is Cellular
Classes:
SFC Mr. Hewitt's Biology Class
Log in to favorite or report as inappropriate.
Order by
14 terms
Terms | Definitions |
|---|---|
 collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life. | cell |
| Idea that all living things are composed of cells, cells are the basic units of structure and funciton in living things, and new cells are produced from existing cells. | cell theory |
| in cells, it is the membrane enclosed structure that contains the cell's genetic material (DNA) and controls the cell's activities. The control center for the cell. | nucleus |
| Cells that contain a nucleus (that separated their genetic material from the rest of the cell). Generally larger than prokaryotic & are more complex/specialized. For example: plants, animals, fungi & protists | eukaryotes |
| Cells that do NOT have nuclei. They have some genetic material that is not contained in the nucleus. Generally smaller & simpler than eukaryotic cells. For example: bacteria. | prokaryotes |
| Used a compound microscope to look at cork (from plant) and observed tiny rooms, which he called "cells." | Robert Hooke |
| Used single lens microscope and observed in pond water, small living organisms (microorganisms). | Anton Leeuwenhoek |
| Concluded that all plants are made up of cells. | Matthias Schleiden |
| Concluded that all animals are made up of cells. | Theodor Schwann |
| Proposed that all cells come from existing cells, completing the cell theory. | Rudolph Virchow |
| Proposed that organelles (tiny structures in some cells) were once free living cells themselves. | Lynn Margulis |
| An electron microscope that reveals details as much as 1000 times more than a light microscope. You MUST cut your specimens into ultrathin slices to use. | Transmission electron microscope-TEM |
| A type of electron microscope that has a pencil like beam of electrons that scan the specimen being observed. You do not need to cut your specimen into think slices to use. | Scanning electron microscope - SEM |
| A new class of microscopes that produce images by tracing the surface s of samples with a fine probe. Revolutionary as it made it possible to observe single atoms. They can operate in ordinary air and even in solutions. | Scanning probe microscopes |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.