The subunits (building blocks) of proteins are
A. nucleotides.
B. phospholipids.
C. amino acids.
D. carbohydrates.
C
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Using a submersible, a biologist obtains a sand sample from the seafloor. In this sample, she discovers a new chemoautotrophic species of archaeon. She notes that these organisms thrive in cold temperatures (below 15 °C) and do not produce methane
How should this archaeon be classified? A. as a euryarchaeote archaeon B. as a crenarchaeote archaeon C. as a nanoarchaeote archaeon D. as a korarchaeote archaeon E. as a thaumarchaeote archaeon v
Plants usually grow best in sandy soils
a. True b. False
Which cellular protein is found in desmosomes?
A) tubulin B) occludins C) dynein D) cadherins E) connexons
Today, gene swapping between two species is
A. infrequent but possible; it happened more often in the distant past. B. much more frequent compared to in the distant past. C. impossible, but it happened frequently in the distant past. D. only possible if they are in the same family of organisms, such as lions and tigers.