Which of the following are exceptions to the universal genetic code that is used by most organisms?
A. Phenylalanine
B. Selenocysteine
C. Stop
D. Lysine
E. Pyrrolysine
Answer:
B. Selenocysteine
E. Pyrrolysine
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Scientists estimate that carbon dioxide in the atmosphere has increased by 35% in the last 150 years
Indicate whether the statement is true or false.
Blooms of certain dinoflagellates are associated with all of the following except
A. Pfiesteria piscicida. B. euglenids. C. ciguatera. D. paralytic shellfish poisoning. E. red tides.
Which statement is true of mitosis and cytokinesis in normal tissues?
A) Cytokinesis occurs simultaneously with mitosis. B) Cytokinesis precedes mitosis. C) Mitosis precedes cytokinesis. D) Cytokinesis partially overlaps with mitosis.
After a scratch test, you charted +4 pollen. What does this most likely mean?