Schistosomiasis is a disease caused by a
A) roundworm
B) trematode
C) cestode
D) planarian
Ans: B) trematode
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The toxic lipopolysaccharides produced by MOST gram-negative bacteria are called exotoxins
Indicate whether the statement is true or false.
Ctenophores feed on:
a. phytoplankton. b. benthic algae. c. planktonic animals. d. detritus. e. DOM.
If defoliation of trees is complete, the leaves that regrow are often larger than the original leaves
Indicate whether the statement is true or false
Before stem cell research was such a prominent topic in the news, many people were misinformed about embryonic stem cell research
Many people thought that this form of stem cell research could be completed only by collecting stem cells from electively aborted fetuses. Explain specifically where embryonic stem cells come from when used for research and why these cells would not typically be found in aborted fetuses.