The term "organic soup" refers to the ancient oceans before life formed, in which organic molecules such as amino acids accumulated.
a. true
b. false
Ans: a. true
Biology & Microbiology
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Which of the following is an enzyme used in cloning that breaks covalent bonds?
A. DNA ligase B. restriction endonuclease C. reverse transcriptase D. DNA polymerase I E. polynucleotide kinase
Biology & Microbiology
Which two animals have no distinct circulatory system?
a. grasshopper and fish b. grasshopper and hydra c. hydra and fish d. sponge and fish e. sponge and hydra
Biology & Microbiology
Which of the following is a plant-derived ingredient that served as one of the world’s first antimalarial drugs?
a. digitalis b. aspirin c. quinine d. ephedrine
Biology & Microbiology
The relationship above is
a. a parasitic association. b. predation. c. resource partitioning. d. a mutualistic association. e. none of these.
Biology & Microbiology