How are echinoderms uniquely different than other deuterostomes?
What will be an ideal response?
ANSWER: Echinoderms, as adults, are radially symmetric. Echinoderms have no excretory system or
respiratory system, and most have only a minimal circulatory system. The water vascular
system, which they use for locomotion, is unique.
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In multi-nucleate cells, which phase of the cell cycle is not utilized?
a. Mitosis b. Cytokinesis c. G1 d. G2
The structure at letter "B" is the ____ which ____
a. tongue; produces speech b. epiglottis; closes the larynx c. larynx; produces sound d. epiglottis; closes the esophagus e. pharynx; holds the trachea open
The ability of the surface waters of the ocean to take up carbon dioxide is governed by the reaction of carbon dioxide with the ________ ion to form bicarbonates
Fill in the blank(s) with correct word
What is the consequence of a mutation in the recA gene in bacteria?
What will be an ideal response?