Mom and dad come to you, their doctors, and report no dirty diapers after feedings. Their now 3-day-old baby isn't pooping, and they feel something is wrong. Which of the following reasons could possibly explain this?

a. The baby hasn't eaten enough.
b. There is a blockage somewhere in the baby's digestive track.
c. The baby has no bacteria in its gut.
d. The digestive enzymes in the gut are not functioning properly.


Answer:
b. There is a blockage somewhere in the baby's digestive track.
d. The digestive enzymes in the gut are not functioning properly.

Biology & Microbiology

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What is the benefit of using Taq polymerase in PCR?

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In addition to recording the lot number, date received, condition received, and expiration date, antisera should be:

a. discarded after each use. b. frozen upon arrival. c. dated when opened. d. tested by the supervisor first before any-one uses it.

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Primary producers obtain energy from a(n) __________ source and use it to build organic compounds from inorganic

starting materials. Fill in the blank(s) with the appropriate word(s).

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What is the largest single source of radiation exposure for the average person in the U.S.?

a. radon b. medical X-rays c. cosmic d. nuclear medicine e. consumer products

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