How long can it take for a full stomach to empty?
1.1–2 hours
2.2–4 hours
3.2–6 hours
4.4–8 hours
5.6–8 hours
3
Biology & Microbiology
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Starting with a single piece of dsDNA, after 3 PCR cycles there are
A. 2 additional pieces of dsDNA. B. 4 additional pieces of dsDNA. C. 8 additional pieces of dsDNA. D. 16 additional pieces of dsDNA.
Biology & Microbiology
What is formed when an atom loses or gains an electron?
a. a molecule b. an ion c. a compound d. a mixture e. a solvent
Biology & Microbiology
Which was first on the planet, prokaryotes or eukaryotes?
A) Eukaryotes B) Prokaryotes C) They both appear in the fossil record at about the same time. D) It is unknown.
Biology & Microbiology
Which of these biomes are maintained by fire?
A) temperate broadleaf forests and chaparral B) chaparral and savannas C) deserts and chaparral D) savanna and temperate grasslands
Biology & Microbiology