and Michael Windelspecht (15th
edition) Introduction Terms/Definitions
Questions Fully Solved.
What are the 6 characteristics of life? - Answer (1) is organized
(2) requires materials and energy
(3) has the ability to reproduce and develop
(4) responds to stimuli
(5) is homeostatic
(6) has the capacity to adapt to their environment
Atoms join together to form ______. - Answer molecules
Molecule - Answer Union of two or more atoms of the same or different elements.
Atom - Answer Smallest unit of an element; composed of electrons, protons, and neutrons.
Eukaryotes are currently classified into _____, _____, _____, _____. - Answer Protista, fungi,
plantae, animalia
cell - Answer Smallest unit of life, the structural and functional unit of all living organisms.
Tissue - Answer A group of similar cells that perform a specific function, a group of cells with
a common structure and function.
Organ - Answer Composed of several tissues functioning together for a specific task.
Several tissues joined together form an - Answer Organ
Organs work together to create an - Answer Organ system
Organ system - Answer Composed of tissues functioning together for a specific task.
Species - Answer A group of interbreeding organisms.
, Community - Answer Interacting populations in a particular area.
Population - Answer Organisms of the same species in a particular area.
Ecosystem - Answer Interacting populations, a community plus the physical environment.
Biosphere - Answer Regions of Earth'a crust, waters, and atmosphere inhabited by living
organisms.
Energy - Answer The capacity to work.
Metabolism - Answer Describes all of the chemical reactions that occur in a cell.
The sun is the - Answer Ultimate source of energy for nearly all life on earth
Photosynthesis - Answer A process that transforms solar energy into the chemical energy of
organic nutrient molecules.
__________ between organisms defined how an ecosystem functions. - Answer The energy
and chemical flow
Reproduction - Answer To make another organism like itself.
_____, ______, ______ simply split into two. - Answer Bacteria, protists, and other single-
celled organisms
Development - Answer Change
Change - Answer Development
Genes - Answer Genetic instructions
Genes are made of_____. - Answer Long DNA molecules
DNA - Answer deoxyribonuleic acid