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State Objectives

Semester Exam Review pg 4

intestines Bacteria live in our _____________ and produce Vitamin K.
plants/animals Bacteria break down dead _________ and ___________. (decomposers)
oil spills Bacteria can be used to clean up _____ ________.
nitrogen Bacteria change ___________ from air to forms that plants can use.
Respiration organisms use oxygen to get energy from food, some of which is released as heat.
Oxygen + glucose (Raw products) carbon dioxide + water + energy (heat) (Products)
cellular respiration All organisms must carry out ________ ___________ to perform its functions to survive.
sun The _______ supplies the energy for most life on Earth.
Producers make their own food (photosynthesis; plants)
producers All food chains and food webs start with ___________.
consumers must eat other consumers (meat eaters)
herbivores eat plants
carnivores eat other consumers (plants and animals)
decomposers break down dead organisms
scavengers eat dead organisms
food chain a model, a simple way of showing how energy passes from one organism to another
food web is a series of overlapping food chains that exist in an ecosystem
ecosystems are all the organisms living in an area and the nonliving parts of an environment
biome is a large geographic area with similar climate and ecosystems
population all the organisms of the same speices that live in that area at the same time
habitat the place where an organism lives
community the population of all species living in an ecosystem
mutualism both species benefit
commensalism one organism benefits and the other one is not affected
parasitism one organism benefits and the other is harmed
niche how an organism obtains food, shelter, finds a mate, cares for its young, and avoids danger
Created by: mgrant