1.Biology: the scientific study of life
2.Characteristics of Life: 1. Be made of materials organized in a
hierarchical pattern.
2.Use energy and raw materials to survive
3.Sense and respond to changing environments and maintain internal
stability, or homeostasis.
4.Grow, develop, and reproduce.
5.Be part of a population that evolves.
3.The Cell: the smallest unit that displays all characteristics of life
4.Matter: Any substance that has mass and takes up space. All
matter can be classified as biotic or abiotic.
5.Biotic: Living or having lived
6.Abiotic: nonliving and never have been alive
7.Atom: Basic unit of matter
8.Molecule: a chemical structure consisting of at least two atoms held
together by a chemical bond
9.Macromolecules: Technically polymers, made by combining smaller
units called monomers. (Example -Deoxyrbonucleic Acid [DNA])
10.Two main types of cells: Prokaryotic and Eukaryotic
11.Prokaryote: Small and simple, do not have clearly defined
compartments inside of them
12.Eukaryotes: organisms made up of one or more cells that have a
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, nucleus and membrane-bound organelles
13.Organelles: compartments inside of the cell that contain specific
groups of macromolecules and carry out specific cellular functions.
14.microorganism: single-celled life forms
15.Tissues: A group of similar cells that perform the same function.
16. Organs: A collection of tissues that work together to carry out a
common general function.
17.organ system: the higher level of organization that consists of
functionally related organs
18.Organism: individual living entity that survive and reproduce as a unit
19.Population: all the individuals of a species living in a specific area
20.Community: All the different populations that live together in an area
21.Ecosystem: Consists of all the living things in a particular area
together with the abiotic parts of that environment.
22.Biosphere: the of all ecosystems on Earth. Includes all habitable
zones on the planet, including land, soil, rocks the Earth's crust,
water and ice, and the atmosphere.
23.Organization of Biosphere: Molecule, Cell, Organism, Population,
Community, Ecosystem
24.Homeostasis: the ability to maintain a stable internal environment
25.Nutrient: Any matter an organism needs but cannot make for itself
26.Waste: Matter that is not used by an organism tat is excreted
27.Energy: the capacity to do work or to make a change in the location,
tempera- ture, or structure of matter.
28.Evolution: Scientific theory that explains how and why life changes
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