Biodiversity & Conservation Flashcards
What are three types of Biodiversity
Genetic biodiversity, Species Biodiversity and Ecosystem diversity.
Why is biodiversity important?
It helps the world, function and stay alive.
What are the direct and indirect values of biodiversity?
Direct:We get products from plants, and animals.
Indirect: A healthy biospehere.
What are the threats of biodiversity?
Species can become extinct,pollution can rise, and ecosystems can get destroyed.
How is the current extinction rate different from the background extinction rate?
The Current extinction rate is higher than the background extinction rate because the background extinction rate is more slow and less animals become extinct.
How can the decline of a sigle species affect an entire ecosystem?
If one species out of a whole ecosystem starts loosing its population, it would be caos. If the squirrel population declined, wolfs would go hungry, less acorns will be buried, and less acorns will be comsumed.
What are two classes of Natural Resources?
Renewable and Non-renewable
What are two methods used to conserve biodiversity?
Make corridors, use sustainable use.
What are two techniques used to restore biodiversity?
Augmentation, protect bio-diversity hot-spots, national parks.
Give examples of renewable and non-renewable resources
Renewable: Water, air, light, wind.
Non-renewable: Coal, oil, minerals.
During cytokinesis, what happens to animal cells?
microfilaments constrict/pinch off to form two cells
During cytokinesis what happens to plant cells?
a new structure called a cell plate forms between the two daughter nuclei.
What parts of cell division are important?
Timing and rate
What two substances drive the cell cycle?
Cyclin and CDK
What are cyclins?
Proteins that bind to enzymes called CDK’s
What are cyclin dependant kinases?
Enzymes that bind with cycling to control activities during different stages of the cell cycle.
What are carcinogens?
Substances that are known to cause cancer.
What is apoptosis?
Programmed cell death
What are stem cells?
Cells that can be directed to become a specialized cell
What is cellular differentation?
the process by which an unspecialized cell develops into a specialized cell with a defined structure and function.
