Which laboratory finding is associated with multiple sclerosis?
A.) Antibody to acetylcholine receptors
B.) Several bands on electrophoresis of cerebrospinal fluid
C.) Antibody to thyroglobulin
D.) Presence of antinuclear antibodies
Ans: B.) Several bands on electrophoresis of cerebrospinal fluid
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How did cyanobacteria, oxygen, and ozone impact the evolution of eukaryotic cells?
What will be an ideal response?
Which of the following types of organisms makes use of the Hatch–Slack cycle?
A) algae B) C3 plants C) C4 plants D) cyanobacteria E) photosynthetic bacteria
Light reactions use sunlight as energy source The light reactions use sunlight as the energy source.
a. true b. false
Which one of the following choices is true of tRNA?
A. Each tRNA binds a specific amino acid. B. tRNAs are extremely small molecules. C. There are four types of tRNA. D. tRNAs carry special sequences known as codons.