Which of the following methods determines which genes are actively transcribed in a cell under a variety of conditions?
A. gene mapping
B. microarray analysis
C. Western blot
D. antisense therapy
E. DNA fingerprinting
Answer: B
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The development of glomerulonephritis is a problem that may be encountered by patients infected with:
a. E. faecalis. b. S. pneumoniae. c. S. pyogenes. d. S. agalactiae.
Which of the following is a key feature of primates?
A. They have a brain that is large in relation to their body. B. They have mammary glands. C. They are endotherms. D. They give birth to live young.
Which curves on the graphs may represent the temperature and pH profiles of an enzyme taken from a bacterium that lives in a mildly alkaline hot springs at temperatures of 70°C or higher?
A) curves 1 and 5 B) curves 2 and 5 C) curves 3 and 4 D) curves 3 and 5
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.