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biology 1-3 exam

QuestionAnswer
the smallest unit of life cell
group of similar cells that perform a particular function tissue
group of tissues that work together to perform closely related functions organ
group of organs that work together to perform a specific function organ system
organism
population
a group of similar organisms that can breed and produce fertil offspring species
assemblage of different populations that live together in a defined area community
all the organisms that live in a place, together with their non-living environment ecosystem
relatively constant internal, physical and chemical conditions that organsisms maintain homeostasis
signal to which an organism responds stimulus
specific reaction to a stimulus response
variable that is observed and changes in response to the independent variable; also called the responding variable dependent variable
factor in a controlled experiment that is deliberately changed independent variable
anything that has mass and takes up space matter
pure substance that consists only of one type of atom element
basic unit of matter atom
substance formed by the chemical combination of two or more elements in definite proportions compound
proton
neutron
electron
atomic number
chemical bond formed when one or more electrons are transferred from one atom to another ionic bond
type of bond between atoms in which electrons are shared covalent bond
type of mixture in which all the components are evenly distributed solution
substance that is dissolved in a solution solute
dissolving substance in a solution solvent
functional group
small chemical unit that makes up a polymer monomer
molecules composed of many momomers; makes up macromolecules polymer
organic compounds
dehydration synthesis
hydrolosis
compound made up of carbon, hydrogen, and oxygen atoms; main source of energy for the body carbohydrates
simple suger molecule monosacchride
large molecule formed from monosacchride polysacchride
disacchride
liquid
energy
semi-permeable
process where particles move from areas of more concentration to areas of less concentration diffusion
concentration gradient
channel protein
carrier proteins
bulk transport
endocytosis
exocytosis
autotroph
heterotroph
photosynthesis
light-dependent reaction
light-independent reaction
photolysis
chlorophyll
Calvin Cycle
cellular respiration
aerobic
anaerobic
firs set of reactions in cellular respiration glycolosis
part of eukaryotic cell division during which the cell nucleus divides mitosis
process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell meiosis
factor that is passed from parent to offspring gene
one of a number of different forms of a gene allele
one set comes from the male parent, the other comes from the female parent homologous chromosomes
region of chromosome where the two sister chromatids attach centromere
heredity
scientific study of heredity genetics
specific characteristic of an induvidual traits
physical characteristics of an organism phenotype
genetic makeup of an organism genotype
having two identical alleles for a particular gene homozygous
having two different alleles for a particular gene heterozygous
process of noticing and describing events in a careful, orderly way observation
a cell is the basic unit of life; cells come from pre-exsisting cells; all living things are made from cells cell theory
diffusion of water through a selectively permeable membrane osmosis
Created by: victoriarawlins
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