Which subphylum includes centipedes and millipedes?
a. Trilobita
b. Chelicerata
c. Myriapoda
d. Hexapoda
Ans: c. Myriapoda
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A codon consists of two nucleotides
Indicate whether this statement is true or false.
What must occur before a newly made polypeptide is secreted from a cell?
A) It must be translated by a ribosome that remains free within the cytosol. B) Its signal sequence must target it to the ER, after which it goes to the Golgi. C) Its signal sequence must be cleaved off before the polypeptide can enter the ER. D) Its signal sequence must target it to the plasma membrane, where it causes exocytosis.
An intrauterine device
A. is used to cause abortions. B. prevent births. C. is a permanent form of birth control. D. All of the above are correct.
Dorothy suffered a serious stroke that destroyed neurons in the swallowing center of her brain. This damage to her brain would prevent ________.
A. secretion of saliva B. mastication C. bolus formation by her tongue D. peristalsis E. elevation of the soft palate