Chapter 1 Flashcards
What are the basic characteristics of life
it is organized, requires materials and energy, reproduce, respond to stimuli, grow and develop, maintain homeostasis, and have the capacity to adapt EVOLUTIONARILY
Cell
- smallest unit of life = human nerve cell are responsible for conducting electric pulses to cells
Tissue
- group of cells = nervous tissue composed of nerve cells to transmit signals
Organ
- group of tissues= brain is the main organ that receives signals
Organ system
- group of organs = nervous system is the brain to spinal cord to spinal nerves
Organism
- individual with several organ systems = YOU
Species
- interbreeding organisms
Population
- group of species
Community
- interacting population
Ecosystem
- community interacting with the physical environment
Biosphere:
- all Earth’s ecosystem
bacteria reproduction
single cell splits into 2
multicellular reproduction
egg and sperm combine then go through development
What is the relationship between natural selection and adaptation?
Individuals of a species that are better adapted to their environment have more reproductive success thus leading to natural selection which results in changes in characteristics of the population to make them better suited for their environment
taxonomic classification from MOST inclusive to LEAST inclusive
domain, supergroup, kingdom, phylum, class, order, family, genus, species