Organisms' Body Organization Flashcards
What are the characteristics that all living things share?
-Growth and development
-Ability to reproduce
-Being made of cells
-Pressing traits onto offspring
are the BUILDING BLOCKS of life and perform important functions in living organisms.
Biomolecules
Four major classes of biological macromolecules:
Carbohydrates (saccharides)
Lipids (facts)
Proteins (amino acids)
Nucleic Acids (DNA and RNA)
What are the chemicals of life made of?
Carbon - 18%
Hydrogen - 10%
Oxygen - 65%
Nitrogen - 4%
Sulfur - 0.3%
take in O2, off CO2
respiration
very small animals rely on diffusion (high to lower concentration); Larger animals have circulatory system
Circulation
primary waste is ammonia
Excretion
receptor cells - sounds, light, external stimuli
Response
Nervous System
Nerve Cells
animals are motile (can move)
Movement
two types of reproduction
sexually and asexually