Properties of Water
If you put a soda can in the freezer for too long, why does it explode?
Water expands when it freezes.
What are the two types of covalent bonds?
polar and non polar
What elements are present in a carbohydrate?
Short-term energy; structure
What type of organism can take gaseous nitrogen and fix it into a usable form?
Bacteria
Define Adhesion and Cohesion.
Adhesion is two different molecules interacting and cohesion is two of the same molecules interacting.
What is it called when two water molecules are interacting because of their partial polarity?
Hydrogen Bond
Which macromolecule is not a true polymer?
Lipid
What is the function of nucleic acids?
Storage of genetic information
In a water molecule, around what atom are the electrons most often found?
Around the oxygen atom.
A bug called a water strider glides across the surface of a lake without sinking. What property of water is this an example of?
High Surface Tension
Table salt, sodium chloride, is an example of what bond type?
Ionic Bond
What is the building block for Lipids?
Fatty Acids and Glycerol
What macromolecule is an enzyme?
Protein
What natural force on earth can cause nitrogen fixation to happen?
Lightning
If you jump into a pool on a hot day and then step into the breeze, why does it feel cold?
Evaporative Cooling
Describe what is happening between two atoms in a non-polar covalent bond.
Two atoms are sharing electrons equally
What is the monomer for protein?
Amino Acids
What is the function of a triglyceride?
Long-term Energy Storage
Which macromolecule contains the element phosphorus?
Nucleic acids
What is bond is responsible for all of the properties of water?
Hydrogen Bonds
What is the bond between an Oxygen atom and a Hydrogen Atom? Be specific!
Polar Covalent Bond
What are the three components of a nucleotide.
Sugar, Phosphate, Nitrogen Base
A steroid is an example of what macromolecule?
Lipid
A molecule of glucose is bonded to another molecule of glucose. An H is removed from one glucose and an OH is removed from the other. The H and OH form water as they are removed from the glucose.
What type of reaction is this?
Dehydration synthesis