A 1.1.1 Biology Water

What is the name of the attraction of water molecules to other water molecules?

• Adhesion

• Surface Tension

• Capillary Action

• Cohesion

What is a property of water?

• It has a low specific heat capacity

• Its an excellent solvent for non polar substances

• It has covalent bonds between water molecules

• Water molecules are highly cohesive which helps in transport of water in Xylem

What are linked by Hydrogen Bonds?

• Hydrogen and Oxygen within a water molecule

• Phosphate and Sugar with in a DNA molecule

• Base and Sugar between DNA nucleotides

• Hydrogen and Oxygen in Different Water Molecules

What is the benefit to organisms of water's high specific heat capacity?

• Heat can be lost from the skin when water evaporates

• Aquatic environments do not have a great fluctuation in temperature

• The amount of heat stored by water is very predictable

• It allows water to be a solvent for chemical reactions at body temperature.

What property of water enables this water strider to walk on the surface of water?

• Adhesion of water molecules

• Cohesion of Water molecules

• High Specific Heat Capacity

• High Density

Which property of water accounts for its use as a coolant in sweat?

• High Specific Heat Capacity

• High Latent Heat of Vaporisation

• High Boiling Point

• High Melting Point

Which statement is not true about the black throated loon in the picture?

• The Loon requires more energy to fly than to float

• The loons feathers help to insulate its body and regulate its temperature'

• The density of the loon is greater than the water

• The loon is streamlined so it can move quickly under the water.

Which property of water is NOT illustrated

• Cohesion

• Dipolarity

• Hydrogen Bonding

• Adhesion

What is the reason why water remains in a liquid state over a larger range f temperatures than methane?

• Water molecules are non polar

• Water molecules occupy less space

• There are fewer covalent bonds in a watee molecule

• There are stronger attractions between water molecules

Where do Hydrogen Bonds form between ?

• The slight negative charge of hydrogen and the slight positive charge of oxygen within a water molecule

• The slight positive charge of hydrogen and the slight negative charge of oxygen within a water molecule

• The slight positive charge of hydrogen and the slight negative charge of oxygen between different water molecules

• The slight negative charge of hydrogen and the slight positive charge of oxygen between different water molecules