Cells & Organelles
What's an organelle?
A tiny organ; the "organs" inside of a cell
What does PMAT stand for?
Prophase, Metaphase, Anaphase, Telophase
A trait is:
a characteristic or adaptation you get from your parents
Where did Charles Darwin sail to learn more about natural selection?
The Galapagos
Describe biodiversity
Lots of living things in an area
This organelle is considered the command center of the cell; stores DNA
Nucleus
What is the end product of mitosis?
What specifically changes in an organism that develops a mutation?
DNA
Survival of the fittest according to Darwin means:
Those who adapt and reproduce the most are the most successful
What kind of relationship does a tick have with a dog? (hint: it's a PARASITE)
Parasitism
How is Eukaryotic DNA different from Prokaryotic DNA?
Eukaryotic DNA is complex and noncircular; stored in the nucleus
Prokaryotic DNA is round and simple; stored in nucleoid
What is the end product of meiosis?
Four different cells
Adaptations that a polar bear has in its environment (list two)
White fur
Large Paws
Big, sharp teeth
Depending on the environment, different sized finch beaks are favored over others
Who benefits in a mutualistic relationship?
Both organisms involved
What organelles does a plant have that an animal cell does not?
Cell wall, large vacuole, chloroplasts
What phase of PMAT occurs when the cells begin to separate?
Telophase
How does cancer occur?
Mutated cells continuously replicate over and over again
How do peppered moths demonstrate adaptations?
Over time the black moths were favored when trees became darker, and vise versa when they lightened up
Describe a niche
A specific role fulfilled by specific organisms in their ecosystem
What is it called when a cell divides and makes and exact copy of itself?
Mitosis
What phase of PMAT involves moving the chromosomes to the middle of the cell to begin pulling them apart?
Metaphase
AA is an example of a ______zygous gene
Aa is an example of a _______ zygous gene
Homozygous
Heterozygous
What's a homologous structure? Examples include the hands of bats, people, and whales
Similar physical features but with different function
How do beavers fulfill a niche in their ecosystem?
Create ponds that cannot exist without the beavers being there