Microorganisms are currently being used to soften denim in "stonewashed" blue jeans. This example of manipulating microorganisms to make products useful for industrial processes is called
A) epidemiology.
B) food microbiology.
C) bioremediation.
D) biotechnology.
Ans: D) biotechnology.
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The loop of Henle in the nephrons of desert-dwelling kangaroo rats is much longer than the loop of Henle in humans. What is the advantage of this increased length for the kangaroo rat?
A. A longer loop of Henle can generate a larger concentration gradient, which allows for the production of a more concentrated urine. B. A longer loop of Henle can generate a smaller concentration gradient, which allows for the production of a more concentrated urine. C. A longer loop of Henle can generate a larger concentration gradient, which allows for the production of a less concentrated urine. D. A longer loop of Henle can generate a smaller concentration gradient, which allows for the production of a less concentrated urine. E. None of the answer options is correct.
The anther represents the _____ portion of the plant, while the ovules represent the ____ portion of the plant
A. Female ; male B. Male ; female C. Female ; female D. Male ; male
Which of the following is a characteristic by which viruses are classified?
A) type of nucleic acid B) type of life cycle C) number of chromosomes D) type of host E) size
Which of the following tests works by detecting viral nucleic acid?
A) ELISA B) PCR C) Agglutination with beads coated with viral antigens D) Agglutination with beads coated with either antibodies or antigens E) Agglutination with beads coated with antibodies to the virus