Which type of organism causes a "red tide"?

A) euglenoids
B) water molds
C) brown algae
D) green algae
E) dinoflagellates

Two tracts found within the extrapyramidal system are the ________.

A) rubrospinal and corticospinal
B) spinothalamic and tectospinal
C) vestibulospinal and rubrospinal
D) corticobulbar and vestibulospinal
E) corticospinal and corticobulbar

Free-living flatworms extend the pharynx out through their mouth and secrete digestive enzymes onto their prey.

Small channels extending through the bone matrix are ________.

A) lamellae
B) lacunae
C) canaliculi
D) periosteum
E) trabeculae

The reserved rights clause in a collective bargaining contract is aimed at preserving the union's right to represent the company's workers.

What are the products of photosynthesis?

A) water and carbon dioxide
B) water and oxygen
C) carbohydrate and water
D) oxygen and carbohydrate
E) carbon dioxide and carbohydrate

​Repressors and activators are examples of ____.

A) ​promoters
B) ​operators
C) ​transcription factors
D) ​homeotic genes
E) ​enhancers

The four vertebrae of the coccyx fuse into 1 bone by the age of about 18.

Algae are to lichens as ____ are to mycorrhizae.

A) club fungi
B) plant roots
C) water molds
D) plant leaves
E) mosses