The pylorus is located at the exit of the:a

stomach.
b. esophagus.
c. jejunum.
d. duodenum.
e. rectum.


A

Biology & Microbiology

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Teosinte was the forerunner of modern

A. rice. B. wheat. C. oats. D. barley. E. maize.

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How many fossil species have been collected?

a. 500,000 b. 125,000 c. 250,000 d. 100,000 e. 1.2 million

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The first animal group to show extracellular digestion was the

A. cnidarians. B. sponges. C. roundworms. D. flatworms.

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Only glucose can be used as an energy source in the human body.

Answer the following statement true (T) or false (F)

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