True or False: If all other aspects of their lifestyles were equivalent, a vegetarian would have a smaller ecological footprint than someone who consumes a large amount of meat
A. true
B. false
A
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The simplest eye structure, which is able to perceive light but not form an image, is called a(n) ____
a. compound eye b. single-lens eye c. ocellus d. ommatidia e. photoreceptor
A TATA box is seen in __________ cells and is the site where __________
a. bacterial; RNA polymerase binds b. eukaryotic; DNA ligase cleaves introns c. eukaryotic; RNA polymerase binds d. both bacterial and eukaryotic; transcription factors bind e. bacterial; a repressor protein binds
The shape of the bill on the bird in the accompanying figure is most likely the result of:
a. coevolution.
b. pollination.
c. asexual reproduction.
d. pseudocopulation.
e. inbreeding.
You are studying a gene that has four exons and can undergo alternative splicing. Exon 1 has two alternatives, exon 2 has five alternatives, exon 3 has three alternatives, and exon 4 has four alternatives
If all possible splicing combinations were used, how many different splice isoforms could be produced for this gene? (a) 22 (b) 30 (c) 60 (d) 120