Introduction to Biology Guide| Questions & Answers |
Grade A| 100% Correct (Verified Solutions)
atom
basic unit of matter
molecule
chemical structure consisting of at least 2 atoms held together
by a chemical bond
cell
fundamental unit of life
organelle
compartment inside the cell that contain specific groups of
macromolecules and carry out specific cellular functions
microorganisms
single celled life form
tissue
formed when many different kinds of cells work together to
fulfill the same detailed function
organs
,collections of tissues that work together to carry out a common
function
organ system
higher level of organization that consists of functionally related
organs
organisms
individual living entities that survive and reproduce as a unit
population
consists of all the individuals of a species living in a specific area
community
populations that can interact with each other in a positive or
negative way
ecosystem
consists of all the living things in a particular area with the
abiotic parts of the environment
biosphere
collection of all ecosystems on earth
emergent properties
characteristics of a system that are not present in any of its
component parts
homeostasis
, the ability or tendency of organisms and cells to maintain stable
internal conditions
pseudoscience
any claim that purports or pretends to be scientific in nature
but does not actually have the characteristics of true scientific
inquiry
biological macromolecules
special molecules that contain carbon atoms covalently bonded
with hydrogen atoms
carbs. lipids. proteins. nucleic acids
4 classes of biological macromolecules
chemical bonds
attractions between atoms that hold atoms and molecules
together
covalent bond
very stable, electron pairs are shared
weak
are hydrogen and ionic bonds weak or strong
solvent
the component of the solution in the greatest quantity
solute
the component present in lower quantities