Which of the following is not a category for the gene product for an oncogene?
A) growth factor receptor
B) nonreceptor protein kinase
C) transcription factor
D) glycolytic enzyme
E) growth factor
D) glycolytic enzyme
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Which of the following statements regarding the loss of biodiversity is false?
A. Earth is losing 2.5% of its species annually. B. There will be fewer species at the end of the 21st century than there are now. C. Loss of biodiversity results in the loss of novel compounds with potential medical applications. D. Loss of biodiversity may result in less productive and resilient communities. E. Habitat degradation is one of the most important threats to biodiversity.
What function does a competent cell have that makes it useful in cloning experiments?
A. Competent cells resist transfection by a viral vector. B. Competent cells repair DNA strands without the aid of DNA ligase. C. Competent cells utilize transposons as a vector. D. Competent cells take up DNA from the external environment
A dikaryotic cell will originate from
a. a sperm that fertilizes an egg. b. a spore that germinates into a hypha. c. alternation of generations. d. pollination. e. fusion of haploid cells from plus and minus mating types.
Allopatric speciation results from __________ isolation of a population.
Fill in the blank(s) with the appropriate word(s).