a system of measurement used by scientists.
the basic unit for distance or length in the metric system.
the basic unit for weight or mass in the metric system.
the basic unit for volume in the metric system.
record of observations (measurements).
all the factors (things) that stay the same in an experiment.
the one factor (thing) that is changed by the person doing the experiment.
the factor (thing) which is measured in the experiment.
the group that has no variable or factor changed in a scientific experiment.
the study of life, including the interactions of life forms with their environment.
a living thing, one of many different forms of life.
an instrument used to magnify things.
the basic unit of all organisms.
separates the interior of a cell from the outside environment.
a small structure inside a cell enclosed by a membrane.
contains all the cell's instructions (DNA) for making proteins and other important molecules.
to combine (join) to form a more complex object.
DNA (deoxyribonucleic acid)
a double strand of nucleic acid made from a different sugar molecule than RNA.
a structure in the nucleus made of a DNA molecule folded and coiled together with proteins.
RNA (ribonucleic acid)
a single strand of nucleic acid made from a different sugar molecule than DNA.
an information organelle that uses the instructions in DNA to make proteins.
a section of DNA that carries instructions for making specific proteins.
process where the sun's energy is converted into chemical energy stored in glucose (sugar).