These are the two levels of taxonomy that are usually italicized.
What are genus and species?
This is the "powerhouse" of the cell.
What is the mitochondria?
A collection of organs that serve a specific purpose is called this.
What is an organ system (body system)?
Another name for a learned trait is this.
What is an acquired trait (adaptation)?
This animal is human's closest evolutionary cousin.
What are chimpanzees?
These are the eight levels of taxonomy in order from least exclusive to most exclusive.
What are domain, kingdom, phylum, class, order, family, genus, and species?
These are the two organelles found in plant cells, but not animal cells.
What are chloroplasts and cell wall?
This is what an organisms structure determines.
What is its function?
An adaptation that describes how an animal looks or functions is this type of adaptation.
What is a physical trait (adaptation)?
The four happy hormones can be used to spell out this acronym.
What is DOSE (dopamine, oxytocin, serotonin, and endorphins)?
These are the three major animal phyla.
What are chordata, arthropoda, and mollusca?
Proteins are built by this organelle.
What is the ribosome?
This is the structural framework of the body.
What is the skeletal system?
Animals are made of many cells, exhibiting this trait of animals.
What is multicellularity?
This is the phrase used to explain how only those organisms best suited for their environment live to pass on their genes.
What is survival of the fittest?
These are the two invertebrate phyla with no true skeletons, but varying numbers of organs.
What are mollusks and cnidaria?
The difference between these two organelles is whether or not ribosomes cover their surface.
What are smooth and rough ER?
These two organ systems bring air into the body, then transport oxygen and carbon dioxide around the body.
What are the respiratory and cardiovascular (circulatory) systems?
Migration is an example of this type of trait, that describes how an animal acts and is passed down from generation to generation.
What is a behavioral, inherited trait (adaptation)?
This is the only truly voluntary portion of the digestive system.
What is the mouth?
This invertebrate phylum has one hole for both eating and excretion.
What are flatworms (platyhelminthes)?
What is the Golgi apparatus?
The muscular system contains these three types of muscles.
What are skeletal, cardiac (heart), and smooth muscles?
This trait of animals means that animals must eat other things to stay alive.
What is heterotrophy?
Almost all DNA is found in the nucleus, except for some found in this organelle.
What is the mitochondria?