a simple compound whose molecules can join together to form polymers
a unicellular organism having cells lacking membrane-bound nuclei
a chemical substance that is present at the start of a chemical reaction
the outcome factor; the variable that may change in response to manipulations of the independent variable
an explanation that is based on prior scientific research or observations and that can be tested
Basic units of DNA molecule, composed of a sugar, a phosphate, and one of 4 DNA bases
the organelles in which nutrients are converted to energy
macromolecule made mainly from carbon and hydrogen atoms; includes fats, oils, and waxes
a jellylike fluid inside the cell in which the organelles are suspended
a substance that initiates or accelerates a chemical reaction without itself being affected
strong layer around the cell membrane in plants, algae, and some bacteria
information gathered from observations
group of organs that work together to perform a specific function
the basic structural and functional unit of all organisms
the organelles in which nutrients are converted to energy
a part of the cell containing DNA and RNA and responsible for growth and reproduction
having the same or equal osmotic pressure
The organelle where ribosomes are made, synthesized and partially assembled, located in the nucleus