Luminescence
A. is catalyzed by luciferase.
B. may be controlled by quorum sensing.
C. may be produced by bacteria.
D. All of the choices are correct.
D
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Research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders, but also may lead to _____
a. new vaccines b. Drosophila genome sequencing projects c. discovery of the environmental causes of schizophrenia d. identification of the mutant gene that causes Huntington disease e. new drugs and treatments
The information storage molecules of cells are called:
A. enzymes. B. hormones. C. nucleic acids. D. proteins. E. phospholipids.
A researcher who detects a higher-than-normal amount of interferon in a laboratory rat would correctly conclude that
A) the rat has, or recently had, a viral infection. B) cancerous cells are present in the rat. C) the rat's diet is deficient in calcium. D) monocytes are differentiating into macrophages in the rat's bloodstream.
What phenomenon is represented in the following figure?
a. overdominance b. balancing selection c. mutation-selection balance d. back mutation e. genetic drift