What would be strong evidence to suggest a protist is phagotrophic?
A. Silicon dioxide cell walls
B. Benthic lifestyle
C. An abundance of lysosomes
D. Locomotion using polar flagella
E. Presence of chloroplasts
Answer: C
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The type strain is the most representative strain of a particular species.
Answer the following statement true (T) or false (F)
The French naturalist who in 1749 became one of the first scientists to suggest that closely-related species arose from a common ancestor and were changing was
A. Charles Darwin. B. Georges Buffon. C. James Hutton. D. Georges Cuvier. E. Charles Lyell.
Which of the following is most critical for the association between histones and DNA?
A) Histones are small proteins. B) Histones are highly conserved (that is, histones are very similar in every eukaryote). C) Histones are synthesized in the cytoplasm. D) There are at least five different histone proteins in every eukaryote. E) Histones are positively charged.
Because the rose is a plant, the likely cloning vector used to introduce necessary genes was a
A. chromatid. B. virus. C. bacterial plasmid. D. cloned nucleus. E. fish genome.