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Cells Unit

1. The Diversity of Cells

TermDefinition
cells the smallest functional and structural unit of all living organisms.
parts of cells Nucleus, cytoplasm and a membrane.
true All living things are made of cells.
Robert Hooke First scientist to study cells with a microscope.
Anton Van Leeuwenhoek Studied cells also and was first to study bacteria under a microscope. Studied animals
Cell Theory all organisms are made of one or more cells, the cell is the basic unit of life, and all cells come from existing cells.
False Cells can be seen with the naked eye.
Small cell size The area of a cell's surface limits the cell size
Cell membrane A phospholipid layer that covers a cell's surface; it acts as a barrier between the inside of a cell and the cell's environment. Separates cell from environment.
cytoplasm liquid portion of the inside of a cell
organelle one of the small bodies in a cell's cytoplasm that are specialized to perform a specific function.
DNA the genetic material
nucleus in a eukaryotic cell, a membrane bound organelle that contains the cell's gentic material called DNA and that has a role in processes such as growth metabolism, and reproduction.
Two types of cells Prokaryotes and Eukaryotes
Prokaryotes single celled organisms that do not have a nucleus or membrane bound organelles.
Eukaryotes cells that have a nucleus.
bacteria The most common type of prokaryote and are the smallest cells known to man.
Characteristics of Bacteria No nucleus, they do have DNA, and contain ribosomes.
ribosomes tiny round organelles made of protein and other material.
Types of Prokaryotes Bacteria and Archae
Three types of Archea prokaryotic cells heat loving, salt loving and methane making.
Methane kind of gas found in a swamp
extremophiles live in places of extreme conditions
True Eukaryotic cells are larger than prokaryotic cells.
Characteristics of Eukaryotic cells have a nucleus, membrane bound organelles, and some are multicellular.
Created by: 200371966