The innermost lining of the gastrointestinal tract is the ________
A) serosa
B) muscularis
C) submucosa
D) mucosa
D
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Beginning with the entry of air into the nose, trace the path of air through the respiratory system until it leaves through the nose
What will be an ideal response?
Dinoflagellates, apicomplexans, and ciliates are placed in the clade Alveolata because they all
a. have flagella or cilia. b. are parasites of animals. c. are found exclusively in freshwater or marine habitats. d. have mitochondria. e. have membrane-bounded sacs under their plasma membrane
Which phrase best describes sister chromatids?
a. two chromosomes having an identical DNA sequence b. two chromosomes having different alleles of the same genes arranged in a different order c. two chromosomes having the same alleles of the same genes in a different order d. two chromosomes having the same genes in the same order, but having different alleles
A proteins __________ determines its function.
Fill in the blank(s) with the appropriate word(s).