Life on Earth
What is the sum of all living things on the planet and the physical environment where they live?
the bioshpere
What is an omnivore?
an organism that obtains energy by eating both plants and animals
what are the two types of nutrition?
autotrophic and heterotrophic
What are the two types of cells
Prokaryotic and Eukaryotic
how many taxonomic levels are there?
seven
non living things are made up of....
inorganic matter
the reactions to changes in the environment are called
responses
what is an autotroph? give one example
an organism that gets their energy from the environment. (plants, algae, bacteria)
single-celled means _____
made up of just one cell
What is the largest taxonomic levels?
Kingdom
what are the four factors that make life on earth possible?
Optimal temperature, precence of oxygen and CO2, presence of water, a protective atmosphere
What is a centrosome?
organelle involved in cell division
How do heterotrophs get their food?
by feeding on other organisms
What is the simplest type of cell? why?
Prokaryotic, it does not have a nucleus
what are the five kingdoms?
monerans, protoctists, fungi, plants, animals
elements that form part of living matter are known as...
bioelements
How many types of eukaryotic cells are there?
two, plant and animal
hunger is an example of .....?
stimuli
what is the cytoplasm?
a liquid that fills the inside of the cell and in which chemical reactions take place
how do we name a species?
binomial nomenclature (two names, one that identifies the genus and the other the species
bioelements make up more that _____ % of living matter.
90%
How many lenses does a microscope have? what are they called?
2, ocular and objective
How does asexual reproduction work?
two or more identical individuals are produced froma single cell, the cell divides
name three types of organelles
mitochondria, centrosome, ribosome, chloroplasts, nucleus, cell wall
What is the Red List
a list of the world´s endangered species