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Biology
Chapter 5 Definitions
| Question | Answer |
|---|---|
| decomposer | an organism that feeds by breaking down organic mastter from dead organisms; examples include bacteria and fungi |
| pathogen | a virus, microorganism, or other organism that causes disease; an infectious agent |
| marsupial | a mammal that lacks a true placenta and gives birth to relatively underdeveloped young, and then carries and narishes the young in a pouch |
| producer | an organism that makes it own food |
| consumer | an organism that eats other organisms/organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources |
| endotherm | an animal that can generate body heat through metabolism and can maintain a constant body temperature despite temperature changes in the animals environment |
| biome | a large region characterized by a specific type of climate and certain types of plant and animal communities |
| niche | the unique position occupied by a species, both in terms of it physical use |
| imprinting | learning that occurs early in an animals life |
| bipedalism | in hominids the condition of being adapted to walk primarily upright on two legs |
| interferon | a protein that is produced by cells infected by a virus and that can protect uninfected cells from reproduction of the virus |
| hydrophilic | water loving |
| hydrophobic | fear of water |
| estuary | an area where fresh water from rivers mixes with salt water from the ocean; the part of a river where the tides meet the river current |
| mutation | a change in the nucleotide base sequence of a gene or DNA molecule |
| divergent evolution | the process by which two or more related but reproductively isolated populations become more and more dissimilar |
| pheromone | a substance that is released by the body and that causes another individual of the same species to react in a predictable way |
| kinetic | energy of motion |
| lymphocytes | a type of white blood cell that exists in two primar forms, T cells and B cells |
| melatonin | a hormone that is produced by the pineal gland during the night that helps regulate certain biorhythms, such as sleep patterns |
Created by:
asc1892
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