Cell Theory
What instrument do we use to look at cells?
Microscope
What is the difference between an organism that is autotrophic and heterotrophic?
Autotrophic organisms make their own food
Heterotrophic organisms have to consume others for energy
What is a predator/prey relationship and an example?
A relationship where one organism (predator) hunts the other (prey) for food
What is an organism and an example?
A single living thing
What is genetic variation and why is it important?
differences in behavioral or physical traits observed among individuals within a population of organisms. Important because those with traits suited to the environment can survive and pass those genes on.
What do all living things have in common?
They are all made of at least one cell
What is the difference between an organism that is prokaryotic and one that is eukaryotic?
A prokaryotic organism does not have a nucleus
A eukaryotic organism does have a nucleus
What is a competitive relationship and an example?
Organisms competing for the same resources in an ecosystem
What is a population and an example?
A group of organisms of the same species, living in the same area at the same time
What is an adaptation?
a characteristic or trait that can help an organism survive in its environment
What is an abiotic factor and list one example?
A nonliving factor of an ecosystem
What is the difference between an organism that is multicellular and unicellular?
A multicellular organism is made of many cells
A unicellular organism is made of one cell
What is a mutualism relationship and an example?
Where two organisms live closely and both benefit
What is a community and an example?
All the populations (living things) of different species living in the same area at the same time
What is an advantageous adaptation and an example?
A trait that is going to help an organism survive its environment
What is a biotic factor and list one example?
A living factor in an ecosystem.
Where is the DNA stored in a eukaryotic cell?
In a membrane bound nucleus
What is a commensalism relationship and an example?
Where two organisms live closely and one benefits, and the other is unharmed/unaffected
What is an ecosystem and an example?
All of the biotic and abiotic factors in an area
What is a disadvantageous adaptation and an example?
A trait that will not help an organism survive its environment
What are the 3 parts of cell theory?
1. All living things are made of one or more cells
2. All cells come from pre-existing cells
3. The cell is the basic unit of structure & function
How is the DNA stored in a prokaryotic cell?
Free floating around the cell
What is a parasitic relationship and an example?
Where two organisms live closely, and one benefits (parasite) and the other is harmed (host)
What are the ecological levels of organization from simplest to most complex?
Organism, population, community, ecosystem
How can environmental changes lead to the decline of a population?
If organisms do not possess traits or adaptations suited to their new environment conditions, the population will begin to decline