Three adjacent nucleotides in mRNA are called a ________.
A. ribosomal RNA (rRNA)
B. codon
C. pre-mRNA
D. gene
E. proenzyme
Answer: B
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Impulses from taste receptors can travel in the facial, glossopharyngeal, and vagus nerves.
Answer the following statement true (T) or false (F)
Cellular respiration results in ________ in entropy as glucose is broken down to form carbon dioxide.
A. an increase B. no change C. a decrease
The maintenance of a relatively constant internal environment is termed:
A) homeostasis. B) positive feedback. C) integration. D) effector control.
Regarding lactation and the mammary glands, which statement is true?
A) Colostrum contains more proteins than breast milk. B) An expectant mother's mammary glands begin producing colostrum by the end of the second month of pregnancy. C) As colostrum production increases, the mammary glands convert to milk production. D) Colostrum, unlike milk, contains large quantities of lysozymes. E) Colostrum has much more fat than breast milk.