Which of the following traits is not seen in any species of lamprey?

a. backbone
b. jaws
c. oral disk with keratinized teeth
d. metamorphosis


b

Biology & Microbiology

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In mammals, one region has become especially important as a "relay center" for information passing from sensory structures to the cerebrum. What region is this?

A. pons B. cerebellum C. hypothalamus D. thalamus E. hippocampus

Biology & Microbiology

A wormlike arthropod with a flattened body and

carnivorous eating habits would be identified as a a. crustacean. b. millipede. c. spider. d. trilobite. e. centipede.

Biology & Microbiology

Which of the following organelles is not part of the endomembrane system?

A) ribosome B) endoplasmic reticulum C) Golgi apparatus D) lysosome E) secretory vesicle

Biology & Microbiology

Which gene is correctly matched with its evolutionary significance?

A. The gremlin gene - evolution of the simple eye. B. The Hox genes - evolution of body plans. C. The Pax6 - evolution of skull shape. D. The BMP4 gene - evolution of lungs.

Biology & Microbiology