Fifth level. Compartments inside the cell that contain specific groups of macromolecules
and carry out specific cellular functions. it encloses the DNA within the cell. - CORRECT
ANSWER-Organelle
Sixth level. Single-celled life form. Consists of just one cell and include unicellular
organisms such as bacteria and protists. - CORRECT ANSWER-Microorganism
Seventh level. Formed when similar cells work together to fulfill the same detailed
function. - CORRECT ANSWER-Tissue
Eighth level. Collections of tissues that work together to carry out a common general
function. Present not only in higher level animals but also in plants. - CORRECT
ANSWER-Organ
Non-living, may be within or made by a living organism. - CORRECT ANSWER-Abiotic
Living. Matter is considered ______ if it was ever alive at some point in time -
CORRECT ANSWER-Biotic
Smallest level. The basic unit of matter. Consists of a dense nucleus surrounded by
electrons. - CORRECT ANSWER-Atom
Second level. A chemical structure consisting of at least two atoms held together by a
chemical bond. - CORRECT ANSWER-Molecule
Third level. Biologically important molecules that are technically polymers. Example:
DNA. - CORRECT ANSWER-Macromolecule
Fourth level. The fundamental unit of life. Essentially a tiny droplet of water and other
molecules enclosed by a fluid "skin" or membrane. The smallest and simplest entity that
possesses all the characteristics of life. - CORRECT ANSWER-Cell
Ninth level. Consists of functionally related organs. Mammals have many. - CORRECT
ANSWER-Organ System
Tenth Level. Individual living entities that survive and reproduce as a unit. For example,
each tree in a forest. - CORRECT ANSWER-Organism