Biology atoms Flashcards
What does polar mean?
Opposite charges, one end positive other end negative
Define cohesion?
the sticking together of particles of the same substance.
Define adhesion?
The property of sticking together.
What makes water a good solvent?
its polarity and ability to form hydrogen bonds.
Define hydrophilic?
Water loving.
In water, which atom is positive?
Hydrogen
In water, which atom is negative?
Oxygen
Define surface tension?
The tendency of the surface of water to resist outside forces.
Between which atoms do hydrogen bonds form between water molecules?
Hydrogen and Oxygen atoms.
Define hydrophobic?
Afraid of water.
Proteins are made of?
One or more chains of amino acids.
Which macromole do enzymes belong to?
Proteins
List 4 differences between DNA and RNA?
- DNA is double stranded, RNA is single. 2. Both have different functions. 3. They produce different sugars. 4. RNA has uracil DNA has thymine.
Define dehydration synthesis?
removing water to combine two molecules.
Define hydrolysis?
Adding water to break apart.
