Biology Entrance Test

• The brown tree snake ate only species that lived in trees, so it had no effect on the Guam rail.
• The Guam rail quickly developed the ability to fly in order to escape from the brown tree snake.
• The population of the Guam rail declined, and the species nearly became extinct.
• The Guam rail began to build its nests in trees.

• electrical energy to heat and mechanical energy
• mechanical energy to heat and electrical energy
• electrical energy to heat and light
• mechanical energy to heat and vaporization

4 Which list of characteristics describes organisms classified as animals?

• Unicellular, prokaryotic, autotrophic
• Multicellular, eukaryotic, heterotrophic
• Unicellular, eukaryotic, heterotrophic
• Multicellular, eukaryotic, autotrophic

• The athlete does no work on either the 200 N weights or the 400 N weights.
• The athlete does no work on the 200 N weights but does work on the 400 N weights.
• The athlete does work on both the 200 N weights and the 400 N weights.
• The athlete does work on the 200 N weights but does no work on the 400 N weights.

• sense odors in the environment
• exchange gases with the environment
• chew food as it enters the mouth
• trap particles that enter the nose

• Before: Waxing Gibbous
  After: Waning Cresecent
• Before: Waxing Crescent
  After: Waxing Gibbous
• Before: Waning Cresecent
  After: New 
• Before: Waning Gibbous
  After: Full

• Owls are predators of bats, and bats are predators of moths.
• Beetles compete with bats and cave spiders.
• Snakes prey on bats and owls.
• None of the above

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

• The shape of the coal changes.
• Oxygen is present.
• A new substance is produced.
• Coal is made up of more than one element.

• Spin the ball in different directions
• Tilt the ball while it is spinning
• Paint one half of the ball black and the other half white
• Shine a bright light on one side of the ball

The atoms of a certain element each contain 11 protons and 1 valence electron. Which statement correctly identifies this element and describes its chemical reactivity?

• The element is sodium, and it is highly reactive.
• The element is fluorine, and it is not very reactive.
• The element is sodium, and it is not very reactive.
• The element is fluorine, and it is highly reactive.