Elements and compounds
This type of substance cannot be broken down into simpler substances.
Element
Water is known as this because it dissolves many substances.
Universal Solvent
These are the building blocks of proteins.
Amino acids
This organ system is responsible for pumping blood throughout the body.
What is the circulatory (cardiovascular) system?
What would happen if cells did NOT form tissues?
What is the body would not function properly / systems wouldn’t work?
These are substances made of two or more elements chemically combined.
Compound
Water easily dissolves substances that are this type of compound.
Ionic Substances
These are the building blocks of nucleic acids like DNA.
Nucleotides
This organ system allows you to breathe and exchange oxygen and carbon dioxide.
Respiratory System
Proteins help the body by doing this main job.
What is building/repairing and acting as enzymes?
True or False: Elements can be broken down during chemical reactions.
False
When salt dissolves in water, it breaks into these charged particles.
Ions
This macromolecule includes fats and oils.
Lipids
This organ system breaks down food so your body can absorb nutrients.
Digestive System
Lipids are important because they store this.
Energy
Water is an example of this type of substance
Compound
This happens when a substance spreads evenly throughout water.
Dissolving or forming a solution
Which is a lipid: cellulose, cholesterol, DNA, or starch?
Cholesterol
This organ system controls body functions using the brain, spinal cord, and nerves.
Nervous System
Nucleic acids are responsible for storing this.
Genetic Info
The smallest unit of an element that still has its properties.
Atom
Why does water dissolve ionic compounds well?
Polarity
A simple sugar is also called this.
Monosaccharides
Explain how two organ systems work together to keep you alive (give an example).
Example answer: The respiratory and circulatory systems work together—lungs bring in oxygen and the blood carries it to cells.
Carbohydrates mainly provide this for cells.
Quick energy