Compared to the arteries, speed of blood flow in the capillaries is __________.
a. faster
b. slower
c. the same
Answer: b. slower
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Which type of molecular assay has been developed to identify P. jirovecii?
a. Nucleic acid sequence-based amplification (NASBA) b. Strand displacement amplification (SDA) c. Transcription-mediated amplification (TMA) d. Real-time polymerase chain reaction (PCR)
To reduce the extent of this damaging phenomenon, many power plants have been required to install systems to remove and capture sulfur dioxide from their emissions
A) acid rain B) eutrophication C) deforestation D) thermal inversion E) ozone depletion
The lac operon is usually in the _____ position and is activated by a/an _____ molecule.
A) on, repressor B) on, inducer C) off, repressor D) off, inducer
The double helix model of DNA structure was proposed by
A. Griffith. B. Franklin. C. Watson and Crick. D. Avery. E. Chargaff.