Many worker bees give their lives to save a bee hive from an attack by bears or other animals. In such cases, we now know that
A. each female worker is waiting to get her chance to reproduce.
B. this is a case of bees consciously understanding the need to preserve the nest for their individual benefit-they might survive if all work together.
C. These worker bees will have a reproductive benefit if the members of the hive survive.
D. this is a case of sexual selection.
Answer: C
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Which of the following statements is not true of the formation of N-formylmethionyl-tRNAfMet?
A. It is formed in two successive reactions. B. A formyl group is transferred to methionine before it is added to tRNAfMet. C. The transformylase enzyme most likely recognizes a unique structural feature of tRNAfMet. D. The tRNAfMet is charged by the Met-tRNA synthetase.
A pathogenic bacterial species has mutated and is no longer able to synthesize a capsule. Which outcome would you predict?
A. The mutated bacteria will be more virulent. B. The mutated bacteria will be protected from plasmolysis in hypertonic environments. C. The mutated bacteria will not be able to cause disease as readily. D. The mutated bacteria will undergo osmotic lysis in hypotonic environments.
An example of a purine is
A) thymine. B) guanine. C) deoxyribose. D) cytosine. E) ribose 5-phosphate.
One gene can have multiple effects on an organism.
A. True B. False