Euglenozoans have distinctive _____
Fill in the blank(s) with the appropriate word(s).
Answer: Mitochondria. two major groups euglenids and kinetoplastids
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The necropsy (postmortem analysis) of a freshwater fish that died after being placed accidentally in saltwater would likely show that _____
A) loss of water by osmosis from cells in vital organs resulted in cell death and organ failure B) high amounts of salt had diffused into the fish's cells, causing them to swell and lyse C) the kidneys were not able to keep up with the water removal necessary in this hyperosmotic environment, creating an irrevocable loss of homeostasis D) the gills became encrusted with salt, resulting in inadequate gas exchange and a resulting asphyxiation E) brain cells lysed as a result of increased osmotic pressure in this hyperosmotic environment, leading to death by loss of autonomic function
A typical human body has ____ bones
a. 78 b. 168 c. 206 d. 417 e. over 600
How do bony fish regulate buoyancy?
A. With a protective operculum B. By constantly swimming at an upwards angle C. Through the calcium in the bones, which makes the skeleton lighter than the water D. With an air-filled swim bladder
The great size and mobility of the vertebrates are likely the result of
A) uterine development of offspring. B) increased brain size and complexity. C) lungs used for respiration. D) four-chambered hearts. E) lightweight endoskeletons.