bio 1 Flashcards
what is the heirarchical order of cellular organisation from least to most complex?
organelles
cell
tissue
organ
organ system
organism
which of the following cannot be classified as domain Eukarya?
group protista, kingdom fungi, bacteria, kingdom animalia, or kingdom plantae?
bacteria
what 4 things can be classified as domain eukarya?
1) group protista
2) kingdom fungi
3) kingdom animalia
4) kingdom plantae
a localised group of organisms that belong to the same species is called?
population
the 8 properties of life
order
reproduction
response to the environment
energy processing
growth, development, and ageing
adaptation to environment through natural selection
sharing of dna
requirements of water
two kinds of reproduction
sexual and a sexual
three levels of biological organisation
1) chemical
2) cellular
3) ecological
define sexual reproduction
two cells from different individuals combine to form the first cells of a new organism
define asexual reproduction
all or part of the organism is used to make a new organism
define stimulus
anything in the environment that can causes a reaction from an organism
define autotroph
organism that can make its own food from its environment
example of autotroph
algae
define heterotroph
organism that has to obtain energy from another organism
define anabolism and give example
the process of making complex substances from simpler substances
photosynthesis
define catabolism and give example
breaking down complex substances into simpler substances
digestion
define metabolism
sum of all the anabolism and catabolism of an organism
all life uses ___ to store and inherit genetic info
DNA
the chemical level of organisation consists of what 3 things
atoms
molecules
macromolecules
what 4 things consist in macromolecules
carbs
lipids
proteins
nucleic acid
atoms are the ___ chemical units
smallest
what 2 things are correlated at all levels of biological organisation?
structure and function
4 ecological levels of organisation
organism
population
community
ecosystems
approximately ___ million species have been identified and named to date
1.8
estimate of total species that exist:
10 million to 100 million