Which of the following trophic levels could include carnivores?
A) second
B) third
C) fourth
D) first
E) either the third or fourth
Answer: E
Biology & Microbiology
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In this reaction, ethanol represents the
a. enzyme. b. substrate. c. product. d. activation energy. e. trigger
Biology & Microbiology
Two EPSPs combine to drive a cell to threshold potential. This is an example of ____
a. neuromodulation b. intersignaling c. neurotransmitter release d. synaptic inhibition e. summation
Biology & Microbiology
_____ bonds link the sugar and phosphate groups in the backbones of DNA molecules
a. Covalent phosphodiester
b. Hydrogen c. Weak d. Ionic e. Weak covalent
Biology & Microbiology
Simple goiter can be prevented by
A. administration of insulin. B. administration of ACTH. C. surgery to remove the thyroid gland. D. increasing intake of iodine in the diet. E. removal of the pituitary.
Biology & Microbiology