Science chapter 1
Terms in this set (31)
a living thing
The basic unit of structure and function in an organism.
made of a single cell
consisting of many cells
A change in an organism's surroundings that causes the organism to react.
An action or change in behavior that occurs as a result of a stimulus.
The process of change that occurs during an organism's life to produce a more complex organism.
The mistaken idea that living things arise from nonliving sources.
An experiment in which all factors are identical except one.
An organism that makes its own food.
An organism that cannot make its own food.
The maintenance of stable internal condition.
The process of grouping things based on their similarities.
The scientific study of how living things are classified.
The system for naming organisms in which each organism is given a unique, two-part scientific name indicating its genus and species.
A classification grouping that consists of a number of similar, closely related species.
A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
The process by which species gradually change over time.
An organism whose cells lack a nucleus and some other cell structures.
The dense area in a eukaryotic cell that contains nucleic acids, the chemical instructions that direct the cell's activities.
An organism whose cells contain nuclei.
The trace of an ancient organism that has been preserved in rock or other substance.
Why do biologists use classification to organize living things into groups?
So the organisms are easier to study.
What are taxonomic keys used for?
determining the identity of organisms
Organisms are placed into domains and kingdoms based on their...?
cell type, their ability to make food, and the number of cells in their bodies.
What are the 4 kingdoms?
animals, plants, fungi, protists
What differences do archaea and bacteria have?
Archaea can survive harsh conditions. Archaea lives in the deep depths of the ocean and bacteria lives in your body, yogurt, and a lot of the surfaces you touch.
Living things come from living things through....
In order to stay alive what do living things need?
food, water, living space, and stable internal conditions
all living things have a...
cellular organization, contain similar chemicals, use energy, respond to their surroundings, grow and develop, and reproduce.
What were the most abundant gasses on ancient earth?
nitrogen, water vapor, carbon dioxide, and methane