Characteristics Of Life Flashcards
Basic unit of life
Cell
Essential material for life
DNA
Mechanism of actual transmission of DNA
Reproduction
Hereditary information from two different organisms of the same species combined
Sexual reproduction
Zygote contains hereditary information from ___________
Both parents
Hereditary information from one (usually unicellular) organism that divides
Asexual reproduction
Resulting cells from asexual reproduction contains ___________ information
Identical hereditary
Growth is manifested by:
- Increase in number of cells (cell division)
- Cell enlargement
The cell divides when…
It grows to a size where its surface area isn’t big enough for its volume
Refers to the capacity to obtain and convert energy into useful form
Metabolism
Two types of metabolism
Anabolism
Catabolism
Store energy by making complex molecules
Anabolism
Breakdown complex molecules to release & convert energy into useful form
Catabolism
Process by which some organisms capture the energy from the syn and transform it into energy tha can be used by living things
Photosynthesis
Organisms that make their own food
Autotrophs
Uses solar energy to produce food
Photoautotrophs
Uses different chemical processes to get energy
Chemoautotrophs
Must take in food to meet energy needs
Heterotrophs
characteristic of organisms in being aware of, and being able to respond to a stimulus which tends to disturb the steady state or homeostasis which all organisms prefer for maintainıng life
Irritability
Sensory organs that allow organisms to detect stimuli from environment
Receptors
Explains the presence of different organisms or species
Evolution
Three domains of life
Bacteria
Archaea
Eukaryota
BAE
