W1- Chapter 1 Flashcards
(39 cards)
the smallest unit of an element that has chemical properties of an element
atoms
all matter is composed of
atoms
atoms bonded together to form
molecules
polymers formed of many molecules bonded together
macromolecules
polymers can be
polypeptides
macromolecule examples
carbohydrates, proteins, nucleic acid, DNA and RNA
simplest unit of life, surrounded by a membrane and contains a variety of molecules and macromolecules
cells
unicellular
containing one cell
multicellular
containing more than one cell
in multicellular organisms, many of the same cell associate with each other to form
tissues
in complex multicellular organisms, what is composed of two or more types of tissue
organs
biologists classify as belonging to a particular species and a living thing
organism
a group of organisms of the same species that occupy the same environment
population
an assemblage of populations of different species
community
formed by interactions of a community of organisms with their physical environment
ecosystem
all places on Earth where living things exist
biosphere
life is found in the blank, bodies of blank, on land, and in the blank
air, water, soil
when the parts of an organism interact with each other or the external environment to create novel structures and functions
emergent properties
the study of how new properties of life arises by complex interactions of its individual parts
systems biology
what is used to describe the world
unity and diversity
provides the blueprint for the organization, development, ad function of living things
DNA
segments of DNA, govern the characteristics or traits of organisms
genes
most blank are transcribed into a type of RNA molecule called mRNA, then translated into a polypeptide with a specific amino acid sequence
genes
a molecule consisting of a linear sequence of amino acids, demotes structure
polypeptides