You are working on a forensics team and collect some cells from a crime scene. The cells are angular, rigid, and have a cell wall made up of cellulose. This sample most likely came from a(n)
A. fungus.
B. bacterium.
C. protist.
D. animal.
E. plant.
E. plant.
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How many HLA haplotypes does each human have?
a. one b. two c. three d. four e. five
Considering the structure of double-stranded DNA, which kind(s) of bonds hold one complementary strand to the other?
A) hydrogen B) ionic C) hydrophobic and hydrophilic D) covalent E) van der Waals
The Humboldt Current, a river of cold water running deep beneath the Pacific Ocean, sweeps eastward toward the South American coast until it hits the coastline, where it is forced upward near the surface. Deep sediments come up along with the cold water
Predict what you would find along that coast. A) very few sea birds B) limited algae C) tremendous biomass D) lots of rain
Neural crest cells:
a. originated in the first chordates. c. migrate during development. b. develop only into neurons. d. produce only beaks in birds.