From what environment were Archaea first isolated?
a. from salt lakes
b. from Mars
c. from freshwater lakes
d. from a human patient
Ans: a. from salt lakes
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During translation elongation, which event happens last?
A. A tRNA molecule translocates from the A site to the P site. B. A tRNA carrying an amino acid binds to the A site. C. A tRNA molecule translocates from the P site to the E site. D. A peptide bond forms.
Which of the following statements concerning
cancer is most accurate?
a. Neoplasms are usually cancerous. b. Neoplasms have lost control over cell division. c. Tumor cells have an increased capacity for adhesion. d. Benign tumors often spread to other body parts. e. Metastasis is cell division which is stationary.
A species that consumes only animal tissue is called a(n) ________
Fill in the blank(s) with correct word
In a majority of land ecosystems, most energy in producers flows directly to ____.
A. decomposers B. other plants C. detritivores D. herbivores E. carnivores