The scientific method
The first part of the scientific method
making observations
what is the negatively charged particle in an atom
electrons
name three characteristics of living things
DNA, grow and develop, reproduction, homeostasis, respond to stimuli, evolve, made of cells, obtain and use energy
What is a scientific explanation for a set of observations that can be tested in a way that supports or rejects it
hypothesis
what is one use for radioactive isotopes
carbon dating, radiation therapy, tracers, smoke detectors
a main source of energy for living things
What is carbohydrates
the universal genetic code for living things
DNA
why is it important to only test one variable at a time?
if you test more than one variable, you don't know what caused the results
What are the 3 subatomic particles
protons, neutrons and electrons
elements that have the same number of protons but a different number of neutrons
isotopes
this macromolecule makes waterproof layering's in many biological systems
What is homeostasis
maintaining a stable internal environment
which type of data deals in quantities
quantitative data
what is the monomer of a protein
amino acids
what is the smallest unit considered to be living
cells
What is the last part of the scientific method that explores data, results and sources of error
conclusion
refers to the number of protons and neutrons fount in the nucleus
What is mass number/ atomic mass
nucleotides are the monomers of which macromolecule
nucleic acids
evolve/evolution