Scientific Method
A testable prediction based on observations
Hypothesis
All living organisms are made up of this
cells
What’s the smallest unit of an element?
Atom
What is a molecule?
2+ atoms bonded together
4 major classes of macromolecules
carbohydrates, lipids, proteins, & nucleic acids
A variable that is purposefully changed
Independent variable
The ability to maintain a constant internal environment?
Homeostasis
Subatomic particle with a positive charge
Proton
What is a compound
A substance made of 2+ different elements
Monomer of carbohydrates
monosaccaride
The variable that is measured or observed?
Dependent variable
The five kingdoms of life
Monera, Protista, Fungi, Plantae, and Animalia?
Subatomic particle with no charge
neutron
What is a covalent bond?
2 atoms share a pair of electrons.
Polymer for proteins
polypeptide
Observations that involve descriptions, not numbers.
Qualitative
List the hierarchy of life
atoms → molecules → cells → tissues → organs → organ systems → organism → population → community → ecosystem → biosphere
Subatomic particle with a negative charge
Electron
What is an ionic bond & types of ionic bonds?
Cation & anion
Starch
How a scientific theory differs from a hypothesis
What is a theory is a well-tested explanation supported by evidence, while a hypothesis is a testable prediction?
List all characteristics of life
CHEMGRR
An atom that has gained or lost electrons is known as an…?
ION
What is a hydrogen bond?
a weak attraction between a slightly positive hydrogen atom
Polymer for Nucleic acids
DNA & RNA