Which of the following types of microscopes would typically be used to identify syphilis bacteria in a specimen?
A. Brightfield
B. Darkfield
C. Transmission electron
D. Scanning electron
Ans: B. Darkfield
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How do nastic movements differ from tropisms?
A. Nastic movements are slower than tropisms. B. Nastic movements only occur in the dark. C. Tropisms are directional responses to directional stimuli; nastic movements are the same regardless of the direction of the stimulus. D. Nastic movements happen after a stimulus, tropisms happen during a stimulus. E. Nastic movements are not reversible.
Nutritive tissue within angiosperm seeds.
Choose the LETTER of the best match: A. hypocotyl B. endosperm C. scutellum D. radicle E. epicotyl
Which of the following is not part of the step that occurs between glycolysis and the Krebs cycle?
A. Reduction of NAD+ B. Oxidation of pyruvic acid C. Coenzyme A attaches to an acetyl group D. Pyruvic acid accepts electrons from NADH
Epithelial tissue is least likely to:
a. contract. b. be specialized as sensory receptors. c. provide protection. d. regulate exchange of substances between parts of the body. e. produce and secrete cell products.