Unit 1 Biology Review

Which characteristic of life is exhibited by geese flying away at the sound of a gunshot?

• growth and development

• genetic code

• responding to an environment (irritability)

• obtaining and using matter and energy

Which of the following elements, found in ALL living organisms, easily bonds itself and forms chains or rings that are the backbone of organic molecules?

• hydrogen

• nitrogen

• oxygen

• carbon

To which group of organic compounds do the fats and oils belong?

• carbohydrates

• lipids

• nucleic acids

• proteins

To which group of organic compounds do the enzymes belong?

• carbohydrates

• lipids

• nuceic acids

• proteins

The chemical reaction

C₆H₁₂O₆ + C₆H₁₂O₆ --> C₁₂H₂₂O₁₁+ H₂O is an example of:

• covalent aquatic bonding

• dehydration synthesis

• hydrolosis

• ionic bonding

When starch molecules are broken down into individual molecules of sugar, the chemical reaction __________________

has taken place

• covalent aquatic bonding

• dehydration synthesis

• hydrolosis

• ionic bonding

Carbohydrates are crucial to life processes because they

• are used by cells for energy

• are insoluble in water and are used for energy storage and insulation

• carry genetic information

• increase the OH concentration of a solution

Which of these correctly matches the class of macromolecules with its primary function?

• carbohydrates and enzymatic function

• proteins and cellular energy

• lipids (fats) and cell membrane struction

• nucleic acids and cell wall structure

Which of the following is NOT a function of proteins?

• store and transmit heredity

• form hormones, chemical messengers in the body

• control the rate of reactions and regulate cell processes

• form tissues such as bones and muscles

Which of the following organic compounds is the main source of energy for living things?

• carbohydrates

• lipids

• nucleic acids

• proteins