Proteins that resemble spools on which DNA molecules
are wound are called
a. kinetochores.
b. centrioles.
c. motor proteins.
d. histones.
e. spindles.
Answer: d
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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
The ____ protist group includes human pathogens
a. parabasalids b. euglenoids c. forams d. red algae e. brown algae
What is a global impact of glacier recession?
a. lower crop yields b. increased precipitation c. rising sea levels d. fewer tropical storms
How are immune cells able to detect foreign pathogens?
A) They detect foreign, unfamiliar chemical substances released by the invading cells. B) They are able to detect structures on the surfaces of foreign cells that are not found in the host. C) They can compare the DNA sequences from the foreign cells to host DNA.