Biological magnification of persistent toxins would be greatest in a

A. fox.
B. oak tree.
C. polar bear.
D. mushroom.
E. deer.


Answer: C

Biology & Microbiology

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The relationship of disease-causing organisms to an infected rabbit is one of

A. parasitism. B. commensalism. C. competition. D. herbivory. E. interference competition.

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________ (NAD+) is the most common coenzyme involved in energy metabolism.

Fill in the blank(s) with the appropriate word(s).

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Cranial nerves are connected directly to the brain.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The chemical colchicine prevents the formation of microtubules. It is commonly used in certain experimental procedures to cause changes in cellular chromosomes. Which of the following changes is it likely to be used to create?

A) Induction of mutant polyploid individuals B) Induction of mutant aneuploid individuals C) Prevention of nondisjunction in cell cultures D) Induction of chromosomal deletions in experimental cell lines E) Induction of chromosomal duplications in experimental cell lines

Biology & Microbiology