Natural Selection
What is an adaptive trait?
What is the difference between a feature and a trait?
Feature is a characteristic that all individuals in a species have.
Traits are different ways the feature presents itself.
What is abiotic matter?
Matter that is not alive, has never been alive, and will never be alive.
What is the name of the process involved in giving us energy?
Cellular respiration
What is an organism?
A living thing
Finish the sentence.
Organisms with adaptive traits have a better change of....
...surviving long enough to reproduce.
...surviving.
...reproducing.
Where do traits come from?
Traits are created by proteins, which are created from the instructions in genes.
What do you call the populations that consumer populations eat?
Resource Populations
What large molecules do you get from food?
Starch and protein
What are all organism made out of?
Cells
In a cold environment, what would be considered a non-adaptive trait?
Low fur
What is it called when you have two different alleles for a gene?
Heterozygous
What process requires the use of energy storage molecules?
Cellular respiration
Why don't oxygen molecules need to be broken down in the body?
They are small enough to enter the cells.
Which gases are exchanged by organisms?
Oxygen and carbon dioxide
What is the difference between variation and distribution?
Variation is the different traits, types, or categories present in a population.
Distribution is the number of individuals in a population that fall into each category.
Why do organisms have chromosome pairs.
Half come from each parent.
What are the inputs and outputs of photosynthesis?
Inputs: water, sunlight (energy), carbon dioxide
Outputs: oxygen, energy storage molecules
What are proteins made out of?
Amino acids
What is a stimulus?
Something that causes a reaction.
Define Natural Selection
The process by which the distribution of traits in a population changes over many generations.
What are mutations?
Random changes to DNA instructions that lead to changes in the proteins that are made.
In what organelle does photosynthesis take place?
Chloroplast
It opens up the gates in your cells to allow glucose in.