Biology Flashcards
Ecology, Evolution, Genetics (DNA), Cells
What is the definition of ECOLOGY?
The study of the relationships between living organisms, including humans, and their physical environment.
Abiotic
Non-Living
Biotic
Living
What are the three trophic levels and how are they displayed on the pyramid?
BOTTOM TO TOP
Producers (100%) - Primary Consumers (10%) - Secondary Consumers (1%) - Apex Predators (.1%)
What is the 10% rule?
The 10% rule is when every time the energy is transferred from one organism to another 10% of the energy is lost
What are Producers?
They are able to produce their own food (energy) by using external sources like the sun for photosynthesis
Ex: Plants/grass
What are Consumers?
Consumers eat the producers to gain their energy but 90% of the energy the producer had was lost when the energy was transferred to the consumer
Ex: Deer, Rabbits, Bunnies, and Snails
What are decomposers?
An organism, often a bacterium, or fungus, that feeds on and breaks down dead plants or animals making organic nutrients. They can be found in all layers of the pyramid.
What are Apex Predators?
They are at the top of the ecology pyramid and primarily eat secondary consumers who eat Primary consumers who eat the producers.
Ex: Shark, Lions, and Bald Eagles
What is a Cell?
The smallest init that can live on its own and that makes up all living organisms and the tissues of the body.
How are prokaryotes and eukaryotes different from each other?
Prokaryotes: Is NOT multicellular and the DO have a cell wall, and their cell is simple
Ex: Bacteria
Eukaryotes: SOMETIMES have a cell wall, they ARE multicellular, and they are MORE COMPLEX
Ex: Animals, Plants, and Fungi
What is the cell cycle and how does it relate to Mitosis?
The cell cycle refers to the cell’s life cycle or the period of cellular growth and DNA replication. Mitosis represents the final step in the cell cycle.
Mitosis (Cell division at the end of the cell cycle) and the cell cycle is the Entire process
What does Meiosis Produce?
Gamete Cells (Sex Cells)
What is DNA made of and where is it found in the EUKARYOTIC cell?
It is made up of Deoxyribose sugar, nucleic acids, phosphate group, and it is found in the nucleus
What two laws did Gregor Mendel write and what were their impacts on the idea of genetic inheritance?
- Law of SEGREGATION: The alleles split and you got one letter from each parent
- Law of DOMINANCE: The dominate allele is expressed in the phenotype