If a lung is punctured in a car accident, that lobe fails to inflate even though there is no obstruction of the air passageway to that lobe. Why?

A) The trauma must have damaged the nerve path controlling ribs on that side of the lung.
B) Negative feedback prevents the ribs and diaphragm on that side from causing pain.
C) When the chest volume expands, air can now rush in through the puncture without filling the alveoli.
D) Mucus or blood must be filling the lobe.
E) Stimulation of stretch receptors in the alveolar walls initiate inhibitory nerve impulses.

What is the most precise description of a false rib?

A) A rib that does not articulate with the vertebral column
B) A rib that never ossifies, but remains as cartilage throughout life
C) A rib that connects directly to the sternum by its own costal cartilage
D) A rib that connects indirectly to the sternum by a costal cartilage, or has no connection to the sternum
E) A rib that has no cartilaginous connection to the sternum

You want to determine if black coat color (B) and long tail length (T) are linked in a new breed of dog (white coat and short tails are recessive). Design a two-point test cross to determine if this is indeed the case. What results would you expect if the genes were linked? What would you expect if the alleles sorted independently?

A beta-pleated sheet is an example of a protein's tertiary structure.

Most antibiotics in the United States are

A) used to treat human infections.
B) included in household cleaning products.
C) used to treat sick livestock.
D) given to healthy farm animals.

The species richness of a community refers to the ____.

A) relative abundance of a species
B) number of different species present
C) number of individuals that belong to each species
D) effect of a species relative to its size
E) effect of a species relative to its abundance

Which condition results from failure of vertebral laminae to fuse?

A) Lordosis
B) Kyphosis
C) Scoliosis
D) Spina bifida
E) Herniated disk

Which group can be distinguished from the other arthropods by its possession of two pairs of antennae?

A) insects
B) millipedes
C) chelicerates
D) crustaceans
E) trilobites

Which of the following is necessary to see an object?

A) retina
B) optic nerve
C) nerve impulse
D) bipolar cells
E) All of the answer choices are necessary for sight.

The outward-facing cell walls of epidermal cells contain which substance to reduce water loss?

A) wax
B) pectin
C) lignin
D) suberin
E) chitin