Unit 1 Flashcards
Organisms can be classified into groups by the…
Features that they share
What is a species?
A group of organisms that can reproduce to produce a fertile offspring
What is the binomial system?
System of naming species and an internationally agreed system in which the scientific name of an organism is made up of two parts: genus & species
What do classification systems reflect?
Evolutionary relationships
What can be used as a means of classification
DNA base sequences; Morphology; Anatomy; Comparison with other species
Group of organisms with more recent ancestors have…
More similar base DNA sequences
What is movement?
an action by an organism or part of an organism causing a change of position or place
What is respiration
the chemical reactions in cells that break down nutrient molecules and release energy for metabolism
What is sensitivity
the ability to detect and respond to changes in the internal or external environment
What is growth
a permanent increase in size and dry mass
What is reproduction
the processes that make more of the same kind of organism
What is excretion
the removal of the waste products of metabolism and substances in excess of requirements
What is nutrition
the taking in of materials for energy, growth and development
What are the main features that place animals and plants into their appropriate kingdoms
animals- multicellular, eukaryotic organisms that are heterotrophs and mostly motile
Plants-multicellular and eukaryotic, most plants are non-motile and autotrophic
What are features of viruses
Protein coat. Genetic material
