In 1956, people in Minamata, Japan, began to exhibit severe neurological disorders and birth defects
This problem was eventually attributed to methylmercury, a water-insoluble and breakdown-resistant chemical formed from mercury dumped into the adjacent bay by a local factory. Which of the following types of seafood would have the highest levels of methylmercury, and therefore cause the severest effects?
A) Krill (small crustaceans that eat tiny microscopic algae)
B) Tuna that feed on smaller fish that feed on krill that feed on algae
C) Sea urchins that feed on kelp
D) Kelp (large, multicellular, photosynthetic protists)
E) Mussels that feed on tiny microscopic algae
B
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Conduction from node to node
a. occurs only in the central nervous system. b. is a rapid type of nerve conduction. c. occurs between nerves and muscles. d. involves the “jumping” of impulses. e. is a rapid type of nerve conduction and involves the “jumping” of impulses.
Which model did scientists develop to describe the cell membrane?
A.) phospholipid model B.) dynamic model C.) fluid mosaic model D.) transport model
A newly hatched duck adopts the first large, moving object it sees as its mother. This is an example of ________
Fill in the blank(s) with correct word
Contamination with ________ is a concern because they are highly resistant to killing
A) archaea B) endospores C) pleomorphs D) vegetative cells E) vibrios