BiSci Chapter 1- January 28th Flashcards
Biology
is the study of living organisms and their environments.
Organisms
share common characteristics
- organized
- acquire materials and energy
- homeostatic
- respond to stimuli
- reproduce and grow
- have an evolutionary history
Atoms
join together to form molecules
Molecules
make up a cell
Cell
is the smallest structural and functional unit of an organism.
Tissue
is a small group of similar cells that perform a particular function.
Organ
made up several types of tissues
Organ System
each organ belongs to this
Species
a group of interbreeding organisms
Population
all the members of one species in a particular area belong to this
Community
interacting populations of the grasslands make up this
Ecosystem
the community of populations interacts with the physical environment to form this
Biosphere
all the Earth`s ecosystems make up this
Levels of Biological Organization
atom molecule cell tissue organ organ system organism population community ecosystem biosphere
Metabolism
describes all of the chemical reactions that occur within a cell
Photosynthesis
produces organic molecules, such as sugars, that serve as the basis of the food chain for many other organisms, including humans and all other animals.
Homeostasis
the ability of a cell or an organism to maintain an internal environment that operates under specific conditions.
Reproduce
pass down their genetic info to the next generation
Growth
recognized by an increase in size and often the number of cells
Development
indicates all the changes that occur from the time the egg is fertilized until death in humans
Genes
the info in the DNA
Mutations
may cause minor variations in genes
Evolution
is the process by which a population changes over time
Adaptation
each successive generation will include more members with the new variation
Vertebrates
are animals that have a nerve cord protected by a vertebral column
Culture
encompasses human activities and products passed on fro one generation to the next outside of direct biological inheritance
Biodiversity
the number of different species present in a given area
Science
is the study of the material universe or physical reality in order to understand it
Scientific Theories
are concepts that tell us about the order and the patterns within the natural world (how the natural world is organized).
concepts supported by a broad range of observations, experiments, and data
The Principle of Evolution
the theory of evolution has been supported by so many observations and experiments for over a hundred years that it is referred to this term
The Scientific Method
- observation
- hypothesis
- experiment/observations
- conclusion
Control Group
given the placebo
Test Group
given the real meds for experimentation
Technology
is the application of scientific knowledge to the interests of humans
Organ Systems Maintain Homeostasis
maintaining a stable internal environment even when the external environment changes
Zygote
fertilized egg
Evolution
change
Biosphere
zone of air, land, and water at the surface of the Earth in which living organisms are found.
Cell Theory
all organisms are composed of cells
Gene Theory
organisms contain coded info that determines their form, function, and behavior
Evolution Theory
all living things have a common ancestor but each is adapted to a particular way of life
