erin+martin

ORGANISMS!

DEFINE ORGANISM: //noun-// 1. a form of life composed of mutually inderpendent parts that maintain various vital process. 2. a form of life considerded as an entinity: an animal, plant, fungus, or moneran.

In this activity i talk about the features that classifies the 5 kingdoms!

CLASSIFICATION! The process of organising orgsanisms into groups based on predeterminded criteria is called classification. The classification og living things is said to be a strong, multilevel classification. Strong because the scheme gives predictable results. Multilevel because major groupings may be futher subdivided into smaller groups, sub groups. The Criterion we use to assign organisms to groups is the closeness of the evolutionary relationships between members of the group. this is usually observed by looking at the number of features shared by organisms when we compare them. features that might be used when looking to group organisms could include:
 * 1) Physical Structures (e.g. anatomy of bones, teeth, organs etc)
 * 2) Biochemistry (e.g. protein similarities)
 * 3) Manner Of Development
 * 4) Behavioral Characteristics
 * 5) Similarities in DNA

HIERARCHIES OF ORGANISATION Orgamisims have the following levels of organistaion: 1. Atoms- The basic unit of a chemical element. **An example:Carbon** 2. Molecules- A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. **An example: Water Molecules** 3. Cells- The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single //cell//, which is either eukaryotic or prokaryotic. **An Example: Red Blood Cell** 4. Tissuse- Any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products. **An Example: Muscle Tissue** 5. Organs- A part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans. **An Example: Spleen** 6. Organ systems- A group of organs that work together to carry out a particular task. **An Example: Nervous System**

**MACROMOLECULES** **Carbohydrates** **-** //Simple sugars 9mono and disaccharides) join together to make complex carbohydrates (polysaccharides).// //- Glucose is a monosaccharide that is the starting chemical of CELLULAR RESPIRATION ( the process by which the enegry in carbohydrates is converted to a usable form of energy for a cell).//

//﻿- Proteins are amde of amino acids joined together to form longer molecules (called proteins).// //- proteins are used as structural components in cells and tissues.// //- Also have a regulatory role in controlling ﻿biochemical reactions i.e. enzymes are biological catalysts.//
 * //Proteins﻿// **

//- fats and oils// //- an important component in cellular membranes.// //- a high density energy storage product.//
 * //Lipids// **

//- DNA (deoxyriboncleic acid).// //- RNA (ribonucleic acid)// //- 'information storage' molecules.// //- contain the imformation that 'code' for proteins// //- the information that makes you, you (when mixed with your enviroment and experience)//
 * //Nuclies Acids// **

//DNA FOUND IN NUCLEUS OF EUKARYOTIC CELLS (CHROMOSOMES﻿) AND IN CHLOROPLASTS AND MITOCHONDRIA//

//My Glossary Page﻿//