In addition to chlorophylls, light-harvesting antennae include other pigments. What is the benefit of these additional pigments?
A. Increased structural stability of the antenna
B. Narrower range of wavelength reflection
C. Lower anti-oxidant capacity
D. Enhanced resonance transfer
E. Tighter binding of the antennae to the
thylakoid
B
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Clinical sensitivity in the microbiology laboratory refers to:
a. positive results from patients known to have an infection or disease. b. percentage of positive results from all pa-tients tested. c. percentage of patient's that test negative known to have an infection or disease. d. none of the above answers are correct.
An individual heterozygous for sickle-cell disease produces both normal and abnormal polypeptides. This is an
example of ____.
a. epistasisb. incomplete dominance c. polygenic inheritance d. multiple alleles e. pleiotropy
Which of the following is incorrect concerning
Radiolarians? a. They have perforated shells of calcium carbonate. b. They form part of the plankton. c. They use pseudopods for feeding. d. They have vacuoles that impart buoyancy. e. They are heterotrophic protists
Which of the following is NOT strictly a freshwater community?
A. ponds B. streams C. estuaries D. lakes E. rivers