Which types of hormones are typically considered first messengers?
Answer: Peptide
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The question of whether animal eyes have evolved independently in different organisms or have evolved once from a single organism and then diverged over time is still being actively investigated by evolutionary scientists
A. true B. false
Invasive Eurasian grass species can outcompete native North American grasses through
A. secretion of allelochemicals. B. producing more viable seeds. C. producing seeds year-round. D. avoiding grazing animals. E. faster seed germination.
The first patent on a living organism was granted in
A) 1790, when the U.S. passed patent law. B) 1873, for Louis Pasteur's use of yeast. C) 1900, when Mendel's laws were rediscovered. D) 1978, when modern biotechnology began with recombinant insulin.
Which wavelengths are absorbed by chloroplasts during photosynthesis?
a) green b) yellow c) orange d) All of the above are correct. e) Only b) and c) are correct.