Which of the following technologies uses electricity to sort DNA fragments based on their sizes?
A.) genetic screening
B.) gel electrophoresis
C.) DNA microarrays
D.) genetic engineering
Answer: B.) gel electrophoresis
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Which process in eukaryotic cells will proceed normally whether oxygen (O2) is present or absent?
A) electron transport B) glycolysis C) the citric acid cycle D) oxidative phosphorylation E) chemiosmosis
A pesticide targets the endodermal layer in developing mosquitoes. Based on this, which of
the following will likely not develop correctly?
a. muscles b. gut c. outer exoskeleton d. reproductive system
Arrange the following levels of geological eras in the correct order. Write the letter of the oldest period
next to 1 and the letter of the newest period next to 10.
A. Triassic B. Permian C. Archaean D. Cretaceous E. Devonian F. Cambrian G. Silurian H. Jurassic I. Ordovician J. Carboniferous 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
Four of the five answers listed below are trends in hominid evolution. Select the exception
a. ectothermy b. enhanced vision c. upright vertebral column d. omnivorous feeding behavior e. enhanced tool making