Ch. 1 Vocab Flashcards
What is zoology
Scientific study of animal life
What is evolution
The history of life shows extensive and ongoing change
What are the four macromolecules
- Nucleic Acids
- Proteins
- Carbohydrates
- Lipids
What is emergence
Appearance of new characteristics at a level of organization
What are the hierarchical levels
- Macromolecules
- Cells
- Organisms
- Populations
- Species
At each level of biological hierarchy living forms reproduce:
- Genes replicate to produce new genes
- Cells divide producing new cells
- Organisms reproduce, sexually or asexually, to produce new organisms
- Populations may fragment to produce new populations 5. Species may split to produce new species
What is genetic code
is correspondence between sequence of nucleotide bases in
DNA and the sequence of amino acids in a protein
What is metamorphosis
The characteristic changes that an organism undergoes from its origin to its
final adult form
What is ecology
The study of organismal interaction with an environment
What is irritability
All organisms respond to environmental stimuli,
What are the characteristics of animals
Multicellular, Eukaryotic, heterotrophs, lack cell walls
What is a paradigms
Powerful theories that guide extensive research
What is a theory
Broad hypothesis explaining a wide variety of related phenomena, supported by many
experiments, may become
Darwinism as five major theories
Perpetual Change: The living world is always changing
Common Descent: All forms of life descended from a common ancestor through a
branching of lineages
Multiplication of Species: Evolutionary process produces new species by splitting and transforming older ones
Gradualism: Large differences originate through the accumulation of small changes over long periods of time
Natural Selection: A process that generates novel forms from the small variations that
occur among organisms within a population
What is a phylogeny
Life’s history has the structure of a branching evolutionary tree
