organisms
Any living thing
cell
The smallest/basic unit of structure and function within an organism.
microscope
A tool that uses lenses to magnify small objects
Unicellular
uni" means one or single.
A single-celled organism
Example- bacteria
Multicellular
Multi" means many.
Organisms composed of many different cells.
Example - A human body
water
The most abundant chemical in cells
carbohydrates
A cell's main source of energy
proteins and lipids
The building materials of cells
nucleic acids
Genetic material that gives chemical instructions about how each cell should function.
stimulus (stimuli)
A change in an organism's surroundings that cause it to react. Something that causes a cell to react
Example- loud noise, light, explosion, roller coasters.
response
An action or change in behavior based on a stimulus. Example- You experience fear and scream when someone jumps out at you.
development
The process of change that occurs during an organism's life to produce a more complex organism.
reproduction
The ability to produce offspring that are similar to the parents
spontaneous generation
The incorrect idea that living things can be produced from nonliving sources.
controlled experiment
an experiment in which a scientist carries out tests changing only one variable at a time
autotroph
auto"-means self "troph"-means feeder
organisms that make their own food in orderto cary out their cell's functions. Example- plants
heterotroph
hetero" -means other "troph"- means feeder
organisms that get their energy from eating food produced by other sources. Example humans and animals.
living space
a place/space where an organism gets food water and shelter in order to survive.
homeostasis
maintaining or keeping a stable internal condition within a cell so that it can survive and be healthy
Louis Pasteur
Scientist of the 1800's that proved that proved spontaneous generation was false. He experimented with mold growing on beef broth.
Francesco Redi
Scientist of the 1600's that proved spontaneous generation was false. He experimented with maggots growing on raw meat.