Cells
organisms made of one or more cells that have a nucleus and membrane bound organelles
eukaryotes
a complex molecule containing genetic information that makes up chromosomes (shape of a double helix)
DNA
English natural scientist who formulated a theory of evolution by natural selection
Charles Darwin
an animal that hunts other animals for food.
predator
a gas that is expelled from the body by the respiratory system
carbon dioxide
a cell structure that controls which substances can enter or exit the cell
cell membrane
passing of traits from parents to offspring
heredity
a change in a gene or chromosome
mutation
a community of organisms and their abiotic environmenbt
ecosystem
another name for a consumer
heterotroph
jellylike fluid inside the cell in which the organelles are suspended.
cytoplasm
a characteristic that an organism can pass on to its offspring through its genes
any difference between individuals of the same species
variation
a series of steps in which organisms transfer energy by eating and being eaten
lipids
an organelle found in plant and algae cells where photosynthesis takes place
chloroplast
different form of a gene
allele
a process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
natural selection
conditions in the environment that puts limits on where an organism can live
limiting factors
division of cytoplasm during cell division
cytokinesis
series of events in which a cell grows, prepares for division, and divides to form two new daughter cells
cell cycle
genetic makeup of an organism
genotype
the process of selecting a few organisms with desired traits to serve as parents of the next generation
selective breeding
a relationship between two organisms in which one organism benefits and the other is unaffected
commensalism
process of making changes in the DNA code of living organisms
genetic engineering