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16 Cards in this Set

  • Front
  • Back
What is the goal of science?
The goal of science is to investigate and understand nature to explain events in nature and to use those explanations to make useful predictions
What is science?
Science is an organized way of using evidence to learn about the natural world
What are qualitative and quantitative observations?
Qualitative involve characteristics that cannot be easily measured or counted.
Quantitative involve numbers
What are observations and inferences?
Observations is when you use your senses to gater info.
Inferences are logical observations based on prior knowledge and experiences
Define hypothesis
pissible explanation for a set of observations or an answer to a scientific question
What is the idea that life can arise from nonliving matter?
spontaneous generation
List the steps of the scientific method
State the problem
form a hypothesis
set up a controlled experiment
record results
analyze results
draw a conclusion
publish results
What is a controlled experiment?
a test of the effect of a single variable by changing it while keeping all other variables the same.
What is the theory that new organisms come from existing organisms?
Cell theory
In science, what is a theory?
well-tested explanation that unifies a broad range of observations
What are the eight characteristics of living organisms?
1.Living things are made up of units called cells
2. Living things reproduce things are based on a universal genetic code
4. Living things grow and develop
5. LIving things obtain and use materials and energy
6. Living things respond to their envioronment
7. Liviing things maintain a stable internal environment
8. Taken as a group, living things change overtime
What is sexual and asexual reproduction?
Sexual is the process by which two celles from different parents unite to produce the first cell of a new organism

Asexual is a process by which a single parent reproduces by itself
What is homestasis and metabolism?
Homeostasis is a process by which oranisms maintain a relatively stable internal environment.
Metabolism is a set of chemical reactions through which organisms build up or breaks down materials as it carries out its life processes
What is unicellular and multicellular organisms?
unicellular is singe-celled.
Multicellular means many-celled
What is life cycle and development?
Life cycle is a particular pattern of growth and change that occurs over the organisms lifetime.
Development is when the cells in an organism not only increase in number but also become different, or differentiate.
What are the levels of organization?
Biosphere-the part of earth that contains all ecosystems
Ecosystem-community and its nonliving surroundings
Community-populations that live together in a defined area
Population-group of organisms of one type that live in the same area
Organism-individual living thing
Groups of cells-tissues, organs, and organ systems
Cells-smallest functional unit of life
Molecules-groups of atoms