Macromolecules and water properties

Which of the following properties of water is due primarily to the uneven distribution of charge between Hydrogen and Oxygen atoms? (The fact they have different charges)

• It's color

• It's taste

• It's ability to produce buoyant forces

• It's ability to dissolve many substances (universal solvent)

Which statement best describes enzymes ?

• They slow down the rate of breathing

• They speed up the rate of chemical reactions

• They are the building blocks of polymers

• They are the reason water have many properties

Lipid is to insulation as carbohydrate is to

• Structure

• Catalyst

• Energy

• Hereditary

Proteins are made up of chains of

• Phospholipids

• Nucleotides

• Amino acids

• Fatty acids

Which of the following is NOT a unique property of water?

• Contracts as it freezes

• Cohesion

• Universal solvent

• High specific heat

Which of the following is a primary function of carbohydrates?

• Short term energy storage

• Transmission of the genetic code

• Acceleration of chemical reactions

• Form the cell membrane

Which water property make it possible for water to move up the stems and trunks of tall trees.

• Waters high specific heat

• Waters lack of polarity

• Waters expansion upon freezing (less dense)

• Waters capillary action (adhesion and cohesion)

Insulin, keratin, albumin, actin and myosin are examples of

• Proteins

• Carbohydrates

• Lipids

• Nucleic acid

Which macromolecule is correctly paired with one of its functions?

• nucleic acid - provide short term energy

• lipids - produce enzymes

• carbohydrates - store genetic information

• proteins - provide structure in skin, hair, muscles

Areas near the ocean or large lakes have more moderate climate than do areas far from large bodies of water. Which statement best explains this observation?

• water has a very high specific heat

• water is less dense when is solid

• water is a polar molecule

• Cohesion