1.1 Concept Map

Mind Map by jsabo, updated more than 1 year ago
Created by jsabo almost 5 years ago


Cells vary considerably in size and shape but they share certain common features.

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1.1 Concept Map
1 All living things are made of cells.
1.1 Every cell is surrounded by a membrane
1.2 All Cells have genetic material
1.2.1 Found in the cytoplasm, nucleoid region, in prokaryotes
1.2.2 Found in the nucleus of eukaryotic cells
1.2.3 Genetic material is required for instructions that fuel the cells activities. The DNA is used to make proteins (such as enzymes) that catalyze chemical reactions inside the cell.
1.3 Cells have their own energy release system that powers all cell activities.
1.4 Cells are the smallest living structure. Nothing smaller can survive.
1.5 Smallest organisms are unicellular, single celled
1.6 Larger organisms are MULTICELLULAR
2 There are exceptions to the cell theory!
2.1 Exceptions are organisms or pats of organisms that do not consist of typical cells.
2.2 Striated Muscle are built of muscle "fibers" which are not like typical cells.
2.2.1 These fibers are far larger than most animal cells They can be as large as 30mm where most human cells are .03mm in length.
2.2.2 They do not just have one nucleus, they can have as many as several hundred!
2.3 Aseptate Hypha - Fungi is another exception
2.3.1 Fungi consist of narrow thread like structures called hyphae which usually have septa that divide it into many sections. In Aseptate fungi, however, there are no septa. Just a long tube that is flowing and has many muclei spread throughout it.
2.4 Giant Algae grow much larger than typical cells. It can grow as large as 100mm in length. Most organisms that big are multicellular!
3 Cells have a limitation on size
3.1 Cell size is limted based on surface area to volume ratios.
3.1.1 If the volume gets too big, the cell will not be able to get rid of wastes fast enough
3.1.2 If the volume gets to big it won't be able to process nutrients fast enough!
4 All cells must carry out the life processes!
4.1 MR. H. GREN
4.1.1 Metabolism
4.1.2 Reproduction
4.1.3 Homeostasis
4.1.4 Growth
4.1.5 Response
4.1.6 Excretion
4.1.7 Nutrition
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