Biology Unit 1: Characteristics and Classification

an action by an organism causing a change of position or place

chemical reactions in cells that break down nutrient molecules and release energy for metabolism

the ability to detect and respond to changes in the internal or external environment

permanent increase in size and dry mass

the processes that make more of the same kind of organism

the removal of waste products of metabolism and substances in excess requirements

taking in materials for energy , growth and development

placing organisms in groups based on characteristics that they share

A group or organisms that can reproduce to produce offspring

an internationally agreed system in which the scientific name of an organism is made up of two parts : GENUS and SPECIES

Plant, Animal, Prokaryote,Protoctist and Fungi

-Multi cellular organisms, -Roots spread out in soil to absorb water and ions - Stems grow many leaves to absorb light - Cells contain chloroplasts for photosynthesis , they cell walls and a large sap filled vacuole - Has non-seed bearing plants(conifers) and seed-bearing plants (flowers) EXAMPLES: Ferns and mosses.

-Have cells without nuclei -DNA is found in a loop I. the cytoplasm and might have plasmids -Have cell walls. - Have various shapes like spherical, rod shaped and chains -Studied using light and microscope

-Eukaryotic (Have cells). -Found in aquatic environments -Most are uni cellular (like plasmodium and algae) -DNA is found in a loop in cytoplasm and may contain extra DNA loops called Plasmids