Atoms, Elements, and Molecules
Water
Macromolecules
pH
Enzymes
100

This subatomic particle carries a negative charge?

What is an electron? 

100

The chemical formula for water. 

What is H2O? 
100

The main source of energy for our bodies. 

What are carbohydrates?

100

This is the pH of a neutral substance. 

What is 7? 

100

This is where the substrate binds. 

What is the active site? 

200

These subatomic particles are found in the nucleus of an atom. 

What are protons and neutrons? 

200

Water's ability to stick together. 

What is cohesion. 

200

This macromolecule gives us long term energy. 

What are lipids?

200

This has a bitter taste. 

What is a base? 

200

Breaking down larger units into smaller units. 

What is a catabolic reaction?

300

A pure substance made of one kind of atom. 

What is an element? 

300

Water's ability to climb a narrow space against gravity. 

What is capillary action?

300

This macromolecule has four different structures which determine its function. 

What are proteins? 

300

Most human enzymes work best at this pH. 

What is a pH of 7? 

300
Penicillin is able to slow the growth of bacteria through this process. 
What is competitive inhibition? 
400

The number of this subatomic particle grants atomic identity. 

What are protons? 

400

This makes water polar. 

What is an unequal distribution of electrons? 

400
This is a single sugar molecule forming a simple carbohydrate. 

What are monosaccharides. 

400

A solution has a pH of 3. Adding water increases the volume but does not change the number of hydrogen ions. This will do this to the pH.

What is stays the same?

400

This factor explains why stomach enzymes work best in acidic conditions. 

What is pH? 
500

These are substances formed when two or more atoms share or transfer electrons. 

What is a molecule? 

500

Despite being a simple molecule, water can absorb a large amount of heat before changing temperature, which helps regulate climate and body temperature. This property is due to the hydrogen bonds between water molecules.

What is a high specific heat capacity? 

500

This is the structural difference between a saturated fatty acid and unsaturated fatty acid. 

What is a double bond between carbon atoms making a bent tail in unsaturated fatty acids?
500

If a lake becomes more acidic due to pollution, this effect on fish enzymes is most likely. 

What is enzyme activity decreases/stops? 

500

Adding more substrates will not increase the reaction rate if this is limiting. 

What is enzyme concentration?