Ctenophores capture food:
a. with filter feeders.
b. using adhesive glue cells that trap prey.
c. with stinging hair cells that immobilize small invertebrates.
d. by digging through the bottom mud for small invertebrates.
e. with a sticky mucus on their tentacles that capture small invertebrates.
b
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If 0.08 mol of phenol and 0.03 mol of NaOH are combined in a total volume of 0.1 L, what would be the pH of the solution? The pKa of phenol is 9.9
A. 10.5 B. 8.5 C. 9.5 D. 9.7 E. 9.9
Some drugs are plant products that can bind neural receptors in a human body because the body makes a similar chemical. Endorphins are the human equivalent of
A) opiates. B) cocaine. C) THC (tetrahydrocannabinol). D) ethanol.
What term describes individuals that are initially female, but may later become male or alternate between sexes through their lives?
a. homozygosity b. heterozygosity c. protogyny d. protandry
In land mammals, the pelvic girdle is the point where the leg bones attach to the rest of the skeleton. Whales also have a small pelvic girdle. What type of evidence for common descent would include the whale's pelvic girdle?
A) a homologous gene B) a homologous structure C) fossil evidence D) a vestigial structure