Predation  E.  Starfish are predators that feed on species of herbivores (barnacles, mussels, limpets, and chitons). A study was proposed to address the following question, “Do starfish control the number of species of herbivores?” In the actual experiment in which the starfish were removed, the number of herbivore species decline rapidly from 15 to 8 species, while the number of herbivore species remained at 15 when starfish were present. Did the starfish feed on the dominant or subdominant species? 

A bird species nests in a specific kind of tree. The tree is not harmed by the bird building its nest in the tree’s branches, but the bird benefits from the shelter provided by the tree and is better able to successfully raise young. This is an example of

Which of the following is an indication for the use of supragingival irrigation?

The amount of vertical bone loss is determined from the roof of the furca apically.

Stains need to be removed during a dental prophylaxis.  The key to choosing a removal process is by identifying the stain by source and location.

The etiology of dentinal hypersensitivity is the movement of fluid in the enamel tubules.

Papillae of posterior teeth are pyramidal in shape AND papillae of anterior teeth are flatter in shape.

Which of the following is a distinguishing feature of professional sport?

Referring to the Electrophoresis Gel Image, assume the DNA in Lane 3 was loaded on the gel after it was digested with the restriction enzyme HindIII. If the DNA was originally linear genomic DNA, and the restriction enzyme digest was complete, how many HindIII sites are in the piece of DNA?

Which of the following describes a 30 year old patient with osteomas in various bones, multiple odontomas in the jawbones, and intestinal polyps.