Upon Darwin's return from his voyage on the H.M.S Beagle, he spent time breeding ____
a. dogs
b. pigeons
c. barnacles
d. goldfish
e. peas
ANSWER: b
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The most common method of asexual reproduction in protists is
A. fragmentation. B. cytokinesis. C. fission. D. budding.
During which of the following processes does the cytoplasm of two fungal hyphal cells fuse to form a dikaryotic (n+n) cell?
A. karyogamy B. heterokaryogamy C. plasmodesmatogamy D. plasmogamy
A student forgot to label a beaker containing a DNA solution and a beaker containing a glucose solution. If chemical analysis was performed to identify the contents of each beaker, which of the following would be found in the beaker of DNA but not in the beaker with glucose?
A. Nitrogen and phosphorus B. Carbon atoms C. Hydrogen and oxygen atoms D. Amino acids E. Fatty acids
Which substances are the most plentiful biological
molecules in the biosphere? a. carbohydrates b. salts and minerals c. proteins d. fats e. nucleic acids