Neurons in the higher vocal center of a male finch's brain are stimulated to proliferate by testosterone

Indicate whether the statement is true or false.


ANS: F, estrogen

Biology & Microbiology

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Chitin, a modified form of cellulose, is not only cross-linked with proteins but its glucose units are modified with atoms of:  

A.  nitrogen. B.  hydrogen. C.  oxygen. D.  sulfur. E.  phosphorous.

Biology & Microbiology

If a positive reaction is last observed at a dilution of 1:256, the titer is

A. 128. B. 1/512. C. 1/256. D. 256.

Biology & Microbiology

Vitamins

a. are organic substances. b. are inorganic substances. c. are required in small amounts for normal metabolism. d. are organic substances and are required in small amounts for normal metabolism. e. are inorganic substances and are required in small amounts for normal metabolism

Biology & Microbiology

If the world were to support the largest possible human population, all humans would need to be 

A. carnivores. B. omnivores. C. herbivores. D. producers.

Biology & Microbiology