Decomposers
a. are able to enter a food chain at any trophic level.
b. are the most numerous organisms in an ecosystem.
c. include bacteria and fungi.
d. can occupy numerous habitats.
e. all of these.
E
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Magnesium chloride is a salt formed with ionic bonds between one magnesium ion and two chloride ions. Magnesium has two electrons in its outer shell and chlorine has seven electrons in its outer shell. How are the electrons transferred between these atoms?
A. Chlorine is oxidized and magnesium is reduced. B. Both magnesium and chlorine are oxidized. C. Both magnesium and chlorine are reduced. D. Magnesium is oxidized and chlorine is reduced.
Increases in the predator growth rate are followed by
a. Increases in the prey growth rate. b. Decreases in the prey growth rate. c. No change in the prey growth rate. d. The prey growth rate is not affected by the predator growth rate.
The positively charged ion, potassium, and the negatively charged ion, fluoride, will form what kind of bond?
a. ionic b. polar covalent c. nonpolar covalent d. hydrogen e. isotonic
For translation to take place, which of the following would NOT be required to be present?
a. tRNA-amino acid complex. b. ribosome. c. mRNA d. DNA e. rRNA.